Now I never see any. Brick, Concrete, Metal, PVC, Wood. A good rule of thumb is to get quotes for 2-3 different roofing systems. All guidance mentioned represents essential practices for the installation of SPF for insulation applications for metal panel assemblies. The density of the trimmings tossed in the dumpster is lower still. The R-value is based on the air space between HY-Fi and the spray foam. Strong Adhesion: Bonds To Most Building Materials. Sorry about the long paragraph.it didn't look so bad on my laptop in that little reply box but clearly more annoying on my desktop. Local practices for measuring the area of a house vary from town to town, and it may be worth bringing the topic up with your local tax assessor if your house has thick walls. If you are operating a humidifier, that's the probable moisture source, and the first step is to turn off the humidifier. This sounds like inward solar vapor drive, in light of your observation that the areas that get a lot of sun are damp, while the shaded areas are dry. Thanks for your comments. Its a good cost-effective solution to any metal roof. A 16-ounce bottle of baby oil sells for around $2.00. There seem to be no chemicals in spray foam that could react with steel or the galvanized protective coverings on the metal siding and roofing panels. Features and Benefits Product FAQ Helpful Tips The A-component contains polymeric isocyanates (or pMDI), and the B-component is a proprietary blend of polyols, blowing agents, catalysts, fire retardants, and surfactants. The #1 problem is bad spray foam roofing contractors. Suitable For: Crawlspaces . Shop Walnut Brackets & Braces 23.08 ft. Extension Ladders 17.75 in. BTW: Climate change issues notwithstanding Boston is still IECC climate zone 5, not zone 4. Gypsum is a mineral composed of calcium sulfate dihydrate. Great info Dana and Martin. Rick Duncan is the technical director of the Spray Polyurethane Foam Alliance (SPFA), the industrys leading organization representing contractors, material and equipment manufacturers, distributors and industry consultants. Installers of open-cell spray foam will fill a 3.5-inch-deep cavity completely, allowing the foam to expand until it is proud of the studs. Researchers from Oak Ridge National Lab have said open-cell spray foam is risky but what did they miss? And with its long list of attributes, that's no wonder. Slide the cover plate tight to the wall and you'll never know there's foam holding things together. And yes, while Norwich is a pretty temperate climate- roughly a US Marine 4C climate though cooler in summer- it would have a 12 month heating season for a code-min house: https://weatherspark.com/averages/28767/Norwich-England-United-Kingdom . In this article, youll learn about spray polyurethane foam roofing. Clean the metal or aluminum shavings in the transmission pan along with the magnet. Nicolaas, locations to further minimize air infiltration. Thank you! Another benefit is that spray foam is fluid-applied, which means itll fill in all the tiny pinholes that a metal roof can have. Agricultural facilities comprise a large portion of its projects, as spray foam is ideal for many. If you use thin foam tape instead of the R-4 foam used by Bonfigliloi, the R-value advantages are this approach (and the reduction in thermal bridging) will obviously be much less. You can also enter "Bonfiglioli" into the GBA search box to find links to several Q&A threads on GBA discussing the Bonfiglioli approach. All of that said, would you have any suggestions for making up that 0.5"? a. I don't just have to rely on the tape and zip panels to provide a robust air barrier. The friction is due to a lack of oil and lubrication. Yes. Many contractors claim spray foam is the best insulation option for structures built of metal. When applied in the walls, floors and ceiling, the material delivers numerous benefits including durability, energy efficiency and comfort. Spray foam is a chemical product created by two materials, isocyanate and polyol resin, which react when mixed with each other and expand up to 30-60 times its liquid volume after it is sprayed in place. Sorry, the comment form is closed at this time. In general, spray foam insulation cost runs between $1,284 and $3,741 to have it professionally installed, with a national average of $2,492. Spray foam is a combination of two materials, a polyiso and a resin that get pumped from 55-gallon containers, through a hose that runs up the side of your building. If the exterior foam r-value is just added, and the 9.3 r-value of the 2x4 wall filled 3" with closed cell remains constant, then isn't thermal bridging not really being factored in? Respiratory protection for interior insulation requires the use of a supplied air respirator (SAR). My next-door neighbor had trouble finding anyone comfortable working with Roxul ComfortBoard when he built last year. Houlden Contracting Inc., Cambridge, Neb., is an insulation and roofing business with a primary focus in the installation of spray polyurethane foam. The owners, Brad and Shirley Houlden, oversaw both the design and build, taking the best of other high-performance structures and applying those concepts. Nebraska, because of the low number of taxpayers hits the property tax very hard. Recoated 30 year old foam with new silicone, owner received a 10 year warranty. There are a couple of different kinds of coating. Is a man lift required to install the roof system? I understand that requirement may be under threat in the legislature, but for now, good things are happening. The average cost of spray foam insulation is $1,300 to $4,000 installed. Hence footing a large bill! https://up.codes/viewer/wyoming/irc-2015/chapter/11/re-energy-efficiency#N1102.1.2, Even if you installed 3.25" of closed cell foam in the cavities (the most you could practically apply as cavity fill) and R5 on the exterior it would not meet the same performance standard, even though it would meet the letter (R20 + R5.). One nit to pick is that the cellulose was blown in ~4" holes (on the interior OSB side) with a large hose, not with dense-packing hoses, and thus probably not at a density sufficient to eliminate settling over time. The commercial and residential portions also differ structurally. And thats it! 7. My understanding from the article is that the reason why the whole wall r-value of open vs closed is so close is due largely to the increased thermal bridging via the 1/2 of stud that remains "exposed" on the interior (and in smaller part, to the 1/2" less of insulation). Add. You're also right that the shape and conductivity of a rafter affects the thermal bridging penalty. The 3" of 2lb foam is 1lb of polymer per square foot of cavity area, whereas 3.5" of half-pound foam is only 0.146 lbs per square foot- call it 0.017lbs to account for any excess that's trimmed & discarded. Toll Free: 877-684-7262 Int'l: 860-844-0101 My Account. They will check for rusted and deteriorated panels, check the securement of panels (screws) and flashings. How much R-value are you trying to get out of your new roof? Ethan, it depends on the Yes, weve done hundreds of spray foam over metal roofs since weve been a company starting in 1979. Its a very sustainable roofing system. In limited access attics, an ignition barrier coating over the foam may also be required. The spray foam is a type of chemical that expands about 40 times when spray. Closed cell spray foam is the perfect fit for this type of construction as its water resistant, and extremely efficient. Pole barn insulation costs $1.00 to $4.50 per square foot or $3,500 to $16,500 on average, depending on the insulation type, R-value, building size, and whether insulating the walls, roof, or both. We are working on a project in Climate Zone 6 and have specified rigid exterior insulation (2" XPS) over 2x4 framing with fiberglass batts or cellulose wall insulation in stud cavities. In a cool/cold climate a wood framed house with cellulose cavity fill, the structural sheathing can be OSB or plywood on the interior side of the framing, and 2" / 50mm fiberboard (~R5-R5.3) on the exterior under rainscreened siding. GREAT STUFF. Existing surfaces must be dry and free of oils, grease, dirt and debris that could affect adhesion. What blows my mind is that most of the trade industries within the whole residential building industry have always fought against any minimum mandatory requirements for education, and states and municipalities turn their blind eye to the issue. Icynene open cell foam installed in attic assemblies is not risky. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. . Spray foam is a lightweight, fluid-applied product that can be blown away and land on undesirable assets such as car windshields and windows. Spray Foam Insulation for Metal Buildings When it comes to spray foam insulation for metal buildings you have two options - open cell or closed cell foam insulation. Get one for a spray foam roof, get one for a single-ply roof, and get one for a new metal roof. Flash and batt in my opinion is the choice of unprofessional installers. The membrain is the interior surface in that area. I'm not really advocating ANY closed cell foam (response to #8) Response to Antonio Oliver (Comment #8) Fifteen mils of Lapolla FIRE-LOK Thermal Barrier was also applied. In an environment where economists generally predict a flat construction To read the Jan. 2023 Digital Edition, go here. The all-steel shell structure was built first then the commercial side of it was insulated with the spray foam. Believe it's zone 5 so costly framing to increase R value may not pay off but taping the studs seems reasonable and relatively cheap. This topic makes my head spin. Vlad Telea and Alex Pascu of the Romanian metal band 'Goodbye to Gravity' perform before a fire broke out inside a nightclub on Friday, in Bucharest, Romania on Oct. 30, 2015. This type of installation doesnt need to be trimmed. So what do folks think of spraying closed cell foam (2-2.5") and then putting in rockwool? A couple of the reasons I'm leaning towards flash-and-batt + some exterior insulation are: If you have any questions, please contact us anytime. 0 My Cart . Response to Nicolaas Wilkens Does this put the framing factor for TJI way down below 5%? In Zone 6, a 2x4 wall needs at least R-7.5 for the exterior foam layer. Either that, or skip the closed cell entirely there and do a vapor diffusion ridge vent (at least for a simple roof line). Every case study you mentioned in previous issues resulted from interior moisture issues unrelated to the foam or improper foam installation. But with the product shortages and the supply chain issues currently going on, everything costs a lot more. It would also exceed building code and have higher over all R-value. Hi Martin, I love the idea of using open cell, for cost and environmental reasons, but the Ontario Building Code I am following requires poly if closed cell foam is not used. An RH of 45% is a meaningless number without the associated temperature to which the humidity is relative. Reduces air leakage and air-infiltration. GREAT STUFF Pestblock Insulating Foam Sealant with Quick Stop Straw Technology helps protect your home from pests and insects. When youre using more coating, its going to cost more. I recommend running from any company that preaches only the virtues of closed cell foam. A 32-ounce bottle of mineral oil can be purchased for around $7.00 at department stores like Walmart and Target, at pharmacies, and hardware stores. We use both open cell foam and closed cell foam. Spray-foam insulation has become a weapon of choice for many builders and homeowners trying to build tight, energy efficient houses. Note that not all spray polyurethane foams require thermal or ignition barriers. The big-picture concern is actually more about trapped moisture than whether the substances that make up spray foam insulation will corrode steel or metal sheets. Spray foam contracts and pulls away from framing. FROTH-PAK. For more information on the advantages and disadvantages of T-studs, see "First Look at T-Studs.". spray foam roofs usually cost between $4 and $7 per square foot. Metal shavings in oil are caused by friction of the engine's components. 2023 The Taunton Press, Inc. All rights reserved. Or did you mean to write "dehumidifier"? Maybe I did not ask the question clearly. The moisture is coming from the outside as best as I can tell. And using rigid foam for dew point control is also greener than sprayed closed cell, but in new construction why use any foam at all? We, as builders, berate the Real Estate industry for "doing nothing" to collect commissions, or make fun of "sleazy" used car salesmen, and yet we seem to do the same or worst. While most people think closed cell is the answer for insulating steel buildings with spray foam, the truth of that is really whether the walls are exposed or not. If I did remove the membrain and fiberglass and apply at least 2" of CCF after the summer would it solve the issue? I can't say I want to tear off clapboard to see if there is some area deficient of Tyvek so I was hoping I could just create a better vapor barrier using closed cell spray foam. If so, youve come to the right place. With the Class-II vapor retardency of the OSB/plywood, the R-value of the fiberboard while a welcome thermal break on the framing, it doesn't need to be thick enough for dew point control. You should expect a reduction in your future energy costs. All you need to do is minor repairs and then install the foam roofing system over top. This is more common with closed cell foam, but it happens with open cell foam, too. Protective measures must be employed to minimize risks associated with exposure through inhalation, skin and eye contact. Good things are happening John, With high yield and excellent adhesion, it's an . Pros: 1 thick spray foam has an initial R-value of 7.2 per inch and R-value of 12 at 2 thick. In a 24 wall, the installer will usually stop at a maximum depth of about 3 inches instead of 3.5 inches, leaving the typical bumpy surface of cured foam. The facility includes a two-hour rated fire wall with IBC fire wall code certification, safely separating the commercial and living spaces. Multiple immediate passes, with no wait time, may also be applied. This is different than most other roofing systems where once the warranty is over, theyre in bad condition and need to be torn off and replaced. Thick walls can, indeed, have expensive tax consequences. If you want to install spray foam in a stud wall, and price is no object, then it would seem to make sense to specify closed-cell spray foam, right? Even OPEN cell foam isn't the greenest or most sustainable solution. If we need to install two inches of foam versus installing four inches of foam, thatll affect the cost. To address this, continuous air barriers, vapor retarders and insulation are needed. Ross, I know that is not definitive but at least supportive. for pricing and availability. The Metal Show & TIB will take place on 4 days from Tuesday, 09. Philips Norelco Multigroomer All-in-One Trimmer Series 7000. One minor critique In US zones 5 & lower it doesn't even need the low vapor retardency of the interior side wood sheathing to meet code, only for structure. Year of foundation: . Is it worth adding 0.5" of fiberglass or open cell spray foam along that extra 0.5" of exposed stud? With SPF, we could do things size and height-wise that wouldnt be possible with an alternative insulation.. 0; Search Search. The Spray Polyurethane Foam Alliance (SPFA) and Metal Construction Association (MCA) technical bulletin, Spray Polyurethane Foam Insulation on Interior Surfaces of Metal Panels, provides guidance based on research conducted on the installation of SPF onto metal panels and is accessible via download at www.sprayfoam.org/technical/spfa-technical-documents. ( to keep on singin' my song! It seals gaps, cracks and holes where insects and pests commonly enter. Education should be mandatory! Cedar shingles The wall is comprised of 2-inch by 6-inch construction and includes 5/8-fire-rated drywall on either side with 2 inches of Lapolla FOAM-LOK 2000-4G sprayed into the wall, acting as a total air seal. We bring the spray foam rental equipment and foam material directly to your job site. The batt addresses the portion of the studs that would not be insulated by closed-cell foam. Ross, Antonio, A gallon of mineral oil can be ordered from chemical suppliers for around $25.00. I am reading this as an being old post but Yes to the footprint question. Houlden Contracting utilized Lapolla FOAM-LOK 2000 4G closed-cell spray foam insulation, manufactured by Houston-based Icynene-Lapolla. UK Level 6 construction is all about sustainability, and it's fair to say that fiberboard & cellulose are far more sustainable than foam insulation. Drywall. If the TJI is a different depth it changes the equation, as does the presence of plates, rims, headers, web stiffeners, etc.. ZIP R exterior with flash and batt interior I can't tell you how much I appreciate the time you spend responding to me and others. Violators will be prosecuted. Dana Dorsett's suggested method -- spraying closed-cell spray foam against the underside of the roof sheathing, followed by a layer of open-cell spray foam on the interior side of the cured closed-cell foam -- is generally considered safe, especially if the thickness of the closed-cell spray foam layer meets the minimum R-value rules described in this article: Combining Exterior Rigid Foam With Fluffy Insulation. framing assembly have a center-of-wall framing factor of 7.3%. Bottom line: If you're going to use closed cell foam, using only the minimum amount needed for dew point control and using lower impact fiber (or open cell foam) for the rest is going to be nicer to the planet and usually quite a bit less expensive too. While there is no arguing with the thermal bridging viewpoint when it comes to closed cell foam, what about as a vapor barrier. Surface Evaluation: SPF has excellent adhesion to most construction materials including metal. But with spray foam being fluid-applied, the seams will be covered, leaving the roof seamless. Open-cell spray foam has an R-value of about R-3.7 per inch, while closed-cell spray foam has an R-value that may be as high as R-6.5 per inch. Almost any amateur foam installer can install closed cell but it takes a professional to install open cell foam properly. Shop products from small business brands sold in Amazons store. I live outside of Boston (climate zone 4) and have a full walkout basement that I would like to partially finish. Note the Icynene open cell foam does not hold moisture in walls or attic assemblies. 6. I'm assuming that this gap will eliminate the penalty due to cutting off thermal bridging and the closed cell would maintain its substantially higher r-value in this case? I like that close cell would provide a little more "stiffness" as well as an interior barrier for moisture. Its the best combination of performance and cost, especially here in the Midwest. studwalls ~ 25%, and it can be even less with TGIs, etc. $1899 - $12999 FREE delivery Loctite Tite Foam Big Gaps White Insulating Foam Sealant, 12 oz, 1, Can 5,574 $10989 - $12609 You need fuel, a washing brush, a spray can, and a washing pan or . Equipment Care: The care of professional SPF installation equipment is imperative to ensure safety, proper installation and the optimum performance of SPF. They can be raised, which will add additional cost instead of a lesser cost to cover. Are there any other similar techniques ? construction details. As an insulation material, SPF is versatile, durable and lightweight. Akfix 820P PU Fire Rated Foam - Expanding Polyurethane Foam Insulation Spray, Excellent Fire Block Resistance for Filling, Sealing and Roofing All Gaps&Joints, Heat and Soundproofing | 1 Pack, 12 Oz. Yer welcome, Martin! Because SPF is manufactured on-site during the installation, there are specific guidelines and measures that are mandatory to maximize product performance and to ensure safety for installers and facility users. And since the R-value of the additional insulation you describe is a continuous layer (a 1/2-inch-thick layer of continuous spray foam), then the way to calculate the contribution of the additional layer of continuous insulation is simple addition. I was thinking of flash and batting it with rockwool rather than fiberglass. You can also apply paint thinners, gasoline, Goof Off, and AD-40, which should do the job. Contractors should have a supply of spare parts in each rig to minimize downtime should equipment failure occur during installation.
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Now I never see any. Brick, Concrete, Metal, PVC, Wood. A good rule of thumb is to get quotes for 2-3 different roofing systems. All guidance mentioned represents essential practices for the installation of SPF for insulation applications for metal panel assemblies. The density of the trimmings tossed in the dumpster is lower still. The R-value is based on the air space between HY-Fi and the spray foam. Strong Adhesion: Bonds To Most Building Materials. Sorry about the long paragraph.it didn't look so bad on my laptop in that little reply box but clearly more annoying on my desktop. Local practices for measuring the area of a house vary from town to town, and it may be worth bringing the topic up with your local tax assessor if your house has thick walls. If you are operating a humidifier, that's the probable moisture source, and the first step is to turn off the humidifier. This sounds like inward solar vapor drive, in light of your observation that the areas that get a lot of sun are damp, while the shaded areas are dry. Thanks for your comments. Its a good cost-effective solution to any metal roof. A 16-ounce bottle of baby oil sells for around $2.00. There seem to be no chemicals in spray foam that could react with steel or the galvanized protective coverings on the metal siding and roofing panels. Features and Benefits Product FAQ Helpful Tips The A-component contains polymeric isocyanates (or pMDI), and the B-component is a proprietary blend of polyols, blowing agents, catalysts, fire retardants, and surfactants. The #1 problem is bad spray foam roofing contractors. Suitable For: Crawlspaces . Shop Walnut Brackets & Braces 23.08 ft. Extension Ladders 17.75 in. BTW: Climate change issues notwithstanding Boston is still IECC climate zone 5, not zone 4. Gypsum is a mineral composed of calcium sulfate dihydrate. Great info Dana and Martin. Rick Duncan is the technical director of the Spray Polyurethane Foam Alliance (SPFA), the industrys leading organization representing contractors, material and equipment manufacturers, distributors and industry consultants. Installers of open-cell spray foam will fill a 3.5-inch-deep cavity completely, allowing the foam to expand until it is proud of the studs. Researchers from Oak Ridge National Lab have said open-cell spray foam is risky but what did they miss? And with its long list of attributes, that's no wonder. Slide the cover plate tight to the wall and you'll never know there's foam holding things together. And yes, while Norwich is a pretty temperate climate- roughly a US Marine 4C climate though cooler in summer- it would have a 12 month heating season for a code-min house: https://weatherspark.com/averages/28767/Norwich-England-United-Kingdom . In this article, youll learn about spray polyurethane foam roofing. Clean the metal or aluminum shavings in the transmission pan along with the magnet. Nicolaas, locations to further minimize air infiltration. Thank you! Another benefit is that spray foam is fluid-applied, which means itll fill in all the tiny pinholes that a metal roof can have. Agricultural facilities comprise a large portion of its projects, as spray foam is ideal for many. If you use thin foam tape instead of the R-4 foam used by Bonfigliloi, the R-value advantages are this approach (and the reduction in thermal bridging) will obviously be much less. You can also enter "Bonfiglioli" into the GBA search box to find links to several Q&A threads on GBA discussing the Bonfiglioli approach. All of that said, would you have any suggestions for making up that 0.5"? a. I don't just have to rely on the tape and zip panels to provide a robust air barrier. The friction is due to a lack of oil and lubrication. Yes. Many contractors claim spray foam is the best insulation option for structures built of metal. When applied in the walls, floors and ceiling, the material delivers numerous benefits including durability, energy efficiency and comfort. Spray foam is a chemical product created by two materials, isocyanate and polyol resin, which react when mixed with each other and expand up to 30-60 times its liquid volume after it is sprayed in place. Sorry, the comment form is closed at this time. In general, spray foam insulation cost runs between $1,284 and $3,741 to have it professionally installed, with a national average of $2,492. Spray foam is a combination of two materials, a polyiso and a resin that get pumped from 55-gallon containers, through a hose that runs up the side of your building. If the exterior foam r-value is just added, and the 9.3 r-value of the 2x4 wall filled 3" with closed cell remains constant, then isn't thermal bridging not really being factored in? Respiratory protection for interior insulation requires the use of a supplied air respirator (SAR). My next-door neighbor had trouble finding anyone comfortable working with Roxul ComfortBoard when he built last year. Houlden Contracting Inc., Cambridge, Neb., is an insulation and roofing business with a primary focus in the installation of spray polyurethane foam. The owners, Brad and Shirley Houlden, oversaw both the design and build, taking the best of other high-performance structures and applying those concepts. Nebraska, because of the low number of taxpayers hits the property tax very hard. Recoated 30 year old foam with new silicone, owner received a 10 year warranty. There are a couple of different kinds of coating. Is a man lift required to install the roof system? I understand that requirement may be under threat in the legislature, but for now, good things are happening. The average cost of spray foam insulation is $1,300 to $4,000 installed. Hence footing a large bill! https://up.codes/viewer/wyoming/irc-2015/chapter/11/re-energy-efficiency#N1102.1.2, Even if you installed 3.25" of closed cell foam in the cavities (the most you could practically apply as cavity fill) and R5 on the exterior it would not meet the same performance standard, even though it would meet the letter (R20 + R5.). One nit to pick is that the cellulose was blown in ~4" holes (on the interior OSB side) with a large hose, not with dense-packing hoses, and thus probably not at a density sufficient to eliminate settling over time. The commercial and residential portions also differ structurally. And thats it! 7. My understanding from the article is that the reason why the whole wall r-value of open vs closed is so close is due largely to the increased thermal bridging via the 1/2 of stud that remains "exposed" on the interior (and in smaller part, to the 1/2" less of insulation). Add. You're also right that the shape and conductivity of a rafter affects the thermal bridging penalty. The 3" of 2lb foam is 1lb of polymer per square foot of cavity area, whereas 3.5" of half-pound foam is only 0.146 lbs per square foot- call it 0.017lbs to account for any excess that's trimmed & discarded. Toll Free: 877-684-7262 Int'l: 860-844-0101 My Account. They will check for rusted and deteriorated panels, check the securement of panels (screws) and flashings. How much R-value are you trying to get out of your new roof? Ethan, it depends on the Yes, weve done hundreds of spray foam over metal roofs since weve been a company starting in 1979. Its a very sustainable roofing system. In limited access attics, an ignition barrier coating over the foam may also be required. The spray foam is a type of chemical that expands about 40 times when spray. Closed cell spray foam is the perfect fit for this type of construction as its water resistant, and extremely efficient. Pole barn insulation costs $1.00 to $4.50 per square foot or $3,500 to $16,500 on average, depending on the insulation type, R-value, building size, and whether insulating the walls, roof, or both. We are working on a project in Climate Zone 6 and have specified rigid exterior insulation (2" XPS) over 2x4 framing with fiberglass batts or cellulose wall insulation in stud cavities. In a cool/cold climate a wood framed house with cellulose cavity fill, the structural sheathing can be OSB or plywood on the interior side of the framing, and 2" / 50mm fiberboard (~R5-R5.3) on the exterior under rainscreened siding. GREAT STUFF. Existing surfaces must be dry and free of oils, grease, dirt and debris that could affect adhesion. What blows my mind is that most of the trade industries within the whole residential building industry have always fought against any minimum mandatory requirements for education, and states and municipalities turn their blind eye to the issue. Icynene open cell foam installed in attic assemblies is not risky. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. . Spray foam is a lightweight, fluid-applied product that can be blown away and land on undesirable assets such as car windshields and windows. Spray Foam Insulation for Metal Buildings When it comes to spray foam insulation for metal buildings you have two options - open cell or closed cell foam insulation. Get one for a spray foam roof, get one for a single-ply roof, and get one for a new metal roof. Flash and batt in my opinion is the choice of unprofessional installers. The membrain is the interior surface in that area. I'm not really advocating ANY closed cell foam (response to #8) Response to Antonio Oliver (Comment #8) Fifteen mils of Lapolla FIRE-LOK Thermal Barrier was also applied. In an environment where economists generally predict a flat construction To read the Jan. 2023 Digital Edition, go here. The all-steel shell structure was built first then the commercial side of it was insulated with the spray foam. Believe it's zone 5 so costly framing to increase R value may not pay off but taping the studs seems reasonable and relatively cheap. This topic makes my head spin. Vlad Telea and Alex Pascu of the Romanian metal band 'Goodbye to Gravity' perform before a fire broke out inside a nightclub on Friday, in Bucharest, Romania on Oct. 30, 2015. This type of installation doesnt need to be trimmed. So what do folks think of spraying closed cell foam (2-2.5") and then putting in rockwool? A couple of the reasons I'm leaning towards flash-and-batt + some exterior insulation are: If you have any questions, please contact us anytime. 0 My Cart . Response to Nicolaas Wilkens Does this put the framing factor for TJI way down below 5%? In Zone 6, a 2x4 wall needs at least R-7.5 for the exterior foam layer. Either that, or skip the closed cell entirely there and do a vapor diffusion ridge vent (at least for a simple roof line). Every case study you mentioned in previous issues resulted from interior moisture issues unrelated to the foam or improper foam installation. But with the product shortages and the supply chain issues currently going on, everything costs a lot more. It would also exceed building code and have higher over all R-value. Hi Martin, I love the idea of using open cell, for cost and environmental reasons, but the Ontario Building Code I am following requires poly if closed cell foam is not used. An RH of 45% is a meaningless number without the associated temperature to which the humidity is relative. Reduces air leakage and air-infiltration. GREAT STUFF Pestblock Insulating Foam Sealant with Quick Stop Straw Technology helps protect your home from pests and insects. When youre using more coating, its going to cost more. I recommend running from any company that preaches only the virtues of closed cell foam. A 32-ounce bottle of mineral oil can be purchased for around $7.00 at department stores like Walmart and Target, at pharmacies, and hardware stores. We use both open cell foam and closed cell foam. Spray-foam insulation has become a weapon of choice for many builders and homeowners trying to build tight, energy efficient houses. Note that not all spray polyurethane foams require thermal or ignition barriers. The big-picture concern is actually more about trapped moisture than whether the substances that make up spray foam insulation will corrode steel or metal sheets. Spray foam contracts and pulls away from framing. FROTH-PAK. For more information on the advantages and disadvantages of T-studs, see "First Look at T-Studs.". spray foam roofs usually cost between $4 and $7 per square foot. Metal shavings in oil are caused by friction of the engine's components. 2023 The Taunton Press, Inc. All rights reserved. Or did you mean to write "dehumidifier"? Maybe I did not ask the question clearly. The moisture is coming from the outside as best as I can tell. And using rigid foam for dew point control is also greener than sprayed closed cell, but in new construction why use any foam at all? We, as builders, berate the Real Estate industry for "doing nothing" to collect commissions, or make fun of "sleazy" used car salesmen, and yet we seem to do the same or worst. While most people think closed cell is the answer for insulating steel buildings with spray foam, the truth of that is really whether the walls are exposed or not. If I did remove the membrain and fiberglass and apply at least 2" of CCF after the summer would it solve the issue? I can't say I want to tear off clapboard to see if there is some area deficient of Tyvek so I was hoping I could just create a better vapor barrier using closed cell spray foam. If so, youve come to the right place. With the Class-II vapor retardency of the OSB/plywood, the R-value of the fiberboard while a welcome thermal break on the framing, it doesn't need to be thick enough for dew point control. You should expect a reduction in your future energy costs. All you need to do is minor repairs and then install the foam roofing system over top. This is more common with closed cell foam, but it happens with open cell foam, too. Protective measures must be employed to minimize risks associated with exposure through inhalation, skin and eye contact. Good things are happening John, With high yield and excellent adhesion, it's an . Pros: 1 thick spray foam has an initial R-value of 7.2 per inch and R-value of 12 at 2 thick. In a 24 wall, the installer will usually stop at a maximum depth of about 3 inches instead of 3.5 inches, leaving the typical bumpy surface of cured foam. The facility includes a two-hour rated fire wall with IBC fire wall code certification, safely separating the commercial and living spaces. Multiple immediate passes, with no wait time, may also be applied. This is different than most other roofing systems where once the warranty is over, theyre in bad condition and need to be torn off and replaced. Thick walls can, indeed, have expensive tax consequences. If you want to install spray foam in a stud wall, and price is no object, then it would seem to make sense to specify closed-cell spray foam, right? Even OPEN cell foam isn't the greenest or most sustainable solution. If we need to install two inches of foam versus installing four inches of foam, thatll affect the cost. To address this, continuous air barriers, vapor retarders and insulation are needed. Ross, I know that is not definitive but at least supportive. for pricing and availability. The Metal Show & TIB will take place on 4 days from Tuesday, 09. Philips Norelco Multigroomer All-in-One Trimmer Series 7000. One minor critique In US zones 5 & lower it doesn't even need the low vapor retardency of the interior side wood sheathing to meet code, only for structure. Year of foundation: . Is it worth adding 0.5" of fiberglass or open cell spray foam along that extra 0.5" of exposed stud? With SPF, we could do things size and height-wise that wouldnt be possible with an alternative insulation.. 0; Search Search. The Spray Polyurethane Foam Alliance (SPFA) and Metal Construction Association (MCA) technical bulletin, Spray Polyurethane Foam Insulation on Interior Surfaces of Metal Panels, provides guidance based on research conducted on the installation of SPF onto metal panels and is accessible via download at www.sprayfoam.org/technical/spfa-technical-documents. ( to keep on singin' my song! It seals gaps, cracks and holes where insects and pests commonly enter. Education should be mandatory! Cedar shingles The wall is comprised of 2-inch by 6-inch construction and includes 5/8-fire-rated drywall on either side with 2 inches of Lapolla FOAM-LOK 2000-4G sprayed into the wall, acting as a total air seal. We bring the spray foam rental equipment and foam material directly to your job site. The batt addresses the portion of the studs that would not be insulated by closed-cell foam. Ross, Antonio, A gallon of mineral oil can be ordered from chemical suppliers for around $25.00. I am reading this as an being old post but Yes to the footprint question. Houlden Contracting utilized Lapolla FOAM-LOK 2000 4G closed-cell spray foam insulation, manufactured by Houston-based Icynene-Lapolla. UK Level 6 construction is all about sustainability, and it's fair to say that fiberboard & cellulose are far more sustainable than foam insulation. Drywall. If the TJI is a different depth it changes the equation, as does the presence of plates, rims, headers, web stiffeners, etc.. ZIP R exterior with flash and batt interior I can't tell you how much I appreciate the time you spend responding to me and others. Violators will be prosecuted. Dana Dorsett's suggested method -- spraying closed-cell spray foam against the underside of the roof sheathing, followed by a layer of open-cell spray foam on the interior side of the cured closed-cell foam -- is generally considered safe, especially if the thickness of the closed-cell spray foam layer meets the minimum R-value rules described in this article: Combining Exterior Rigid Foam With Fluffy Insulation. framing assembly have a center-of-wall framing factor of 7.3%. Bottom line: If you're going to use closed cell foam, using only the minimum amount needed for dew point control and using lower impact fiber (or open cell foam) for the rest is going to be nicer to the planet and usually quite a bit less expensive too. While there is no arguing with the thermal bridging viewpoint when it comes to closed cell foam, what about as a vapor barrier. Surface Evaluation: SPF has excellent adhesion to most construction materials including metal. But with spray foam being fluid-applied, the seams will be covered, leaving the roof seamless. Open-cell spray foam has an R-value of about R-3.7 per inch, while closed-cell spray foam has an R-value that may be as high as R-6.5 per inch. Almost any amateur foam installer can install closed cell but it takes a professional to install open cell foam properly. Shop products from small business brands sold in Amazons store. I live outside of Boston (climate zone 4) and have a full walkout basement that I would like to partially finish. Note the Icynene open cell foam does not hold moisture in walls or attic assemblies. 6. I'm assuming that this gap will eliminate the penalty due to cutting off thermal bridging and the closed cell would maintain its substantially higher r-value in this case? I like that close cell would provide a little more "stiffness" as well as an interior barrier for moisture. Its the best combination of performance and cost, especially here in the Midwest. studwalls ~ 25%, and it can be even less with TGIs, etc. $1899 - $12999 FREE delivery Loctite Tite Foam Big Gaps White Insulating Foam Sealant, 12 oz, 1, Can 5,574 $10989 - $12609 You need fuel, a washing brush, a spray can, and a washing pan or . Equipment Care: The care of professional SPF installation equipment is imperative to ensure safety, proper installation and the optimum performance of SPF. They can be raised, which will add additional cost instead of a lesser cost to cover. Are there any other similar techniques ? construction details. As an insulation material, SPF is versatile, durable and lightweight. Akfix 820P PU Fire Rated Foam - Expanding Polyurethane Foam Insulation Spray, Excellent Fire Block Resistance for Filling, Sealing and Roofing All Gaps&Joints, Heat and Soundproofing | 1 Pack, 12 Oz. Yer welcome, Martin! Because SPF is manufactured on-site during the installation, there are specific guidelines and measures that are mandatory to maximize product performance and to ensure safety for installers and facility users. And since the R-value of the additional insulation you describe is a continuous layer (a 1/2-inch-thick layer of continuous spray foam), then the way to calculate the contribution of the additional layer of continuous insulation is simple addition. I was thinking of flash and batting it with rockwool rather than fiberglass. You can also apply paint thinners, gasoline, Goof Off, and AD-40, which should do the job. Contractors should have a supply of spare parts in each rig to minimize downtime should equipment failure occur during installation.
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