spray foam with metal shavings

So what is the convensional wisdom regarding TJI framing factor?Worst case scenario is a 3.5" flange at top and bottom and a 3/8" flange? Learn from them, take it all in, and see if foam might be a good fit for your roofing situation. I did cover that interior gap with membrain to keep cool air from getting in there and going behind the studs into adjacent stud cavities. They almost always go by appraised value, with the size of the dwelling being one factor. An RH of 45% at 65F (typical summertime basement temp for full basements in Boston) has a dew point of 43F, and would be GREAT for diluting the recent-days 65-75F outdoor air dew point down to something more reasonable. This foaming spray acts as the best insulator to both heat and cold. Spray foam installers didn't understand the building envelope and sprayed either too little or too much. The area I am planning to finish seems to have minimal issues but I was going to double stud those walls as well. 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 We help you decide which foam material is best for your job and how much will be needed. You should expect a reduction in your future energy costs. studwalls ~ 25%, and it can be even less with TGIs, etc. A contractor begins by examining the current conditions of the metal roof. If you have any questions, please contact us anytime. Can't say I disagree The maximum value of the acoustic absorption coefficient of 0.86 is achieved by sample material 75-RPF (25% textile waste and 75% rigid . These can pull apart, get damaged, and create water entry points over the life of the roof. If you are insulating the interior of a basement wall, the closed-cell spray foam makes more sense than open-cell spray foam. Response to Nicolaas Wilkens If you want to leave a gap between the logs and your 2x4 stud wall, to allow room for spray foam between the logs and the 2x4s, then the larger the gap, the better. While 1/2-inch gypsum in the walls and ceilings, or 3/4-inch plywood subfloor, prescriptively meets this requirement, other applications of foam may require application of an approved thermal barrier covering or coating. If the waterproofing on the foundation isn't up to snuff there could be a lot of moisture coming in by vapor diffusion. Also, it's worth noting that many of them are in the residential construction program at the college to meet the educational requirements to get a builders license in Michigan. These barriers protect against condensation and water damage, maintain indoor temperatures and humidity for dramatically reduced energy costs, and reduce the amount of allergens and pollutants able to enter the structurea true benefit for those suffering from allergies. Even OPEN cell foam isn't the greenest or most sustainable solution. Snow Joe ASHJ201 4.8-Gallon 4-Amp Ash Vacuum w/Dual Filtration System, Metal Canister, Reusable Dust Cartridge. User 6997503, It seals gaps, cracks and holes where insects and pests commonly enter. 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. Yes, weve done hundreds of spray foam over metal roofs since weve been a company starting in 1979. :-) ) The. Single-skin metal building assemblies are durable components of a building envelope, yet they offer no insulation. They don't miss a lick. We have seemingly biblical amounts of rain and the water table is high anyway (perimeter drain to daylight runs most of the year). Or is the MemBrain the interior finish material? Also note: The difference in environmental hit is large, even if using low-impact HFO blowing agents for the closed cell foam. Features and Benefits Product FAQ Helpful Tips Finished surfaces as well as window glass needs to be properly covered and masked to prevent overspray. Huffing is a generalized term that is often applied to various types of inhalant abuse. Suitable For: Crawlspaces . Froth-Pak 12 Spray Foam Sealant Kit . A 16-ounce bottle of baby oil sells for around $2.00. But here are some variables that will affect the cost of a foam roof: A 10-year-warranty takes 20 mils of coating to protect it, while a 20-year-warranty will use 30 mils of coating to protect it. In cathedral ceilings, my current instinct would be to go way overboard on the amount of closed cell foam at least towards the ridge, given the way relative humidity spikes there. 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. Can be used on most common building materials such as wood, concrete, stone, plaster, metal, PVC, polystyrene, etc. Thick walls can, indeed, have expensive tax consequences. FROTH-PAK. I will have to do some more observation. When applied in the walls, floors and ceiling, the material delivers numerous benefits including durability, energy efficiency and comfort. Would you agree? Get one for a spray foam roof, get one for a single-ply roof, and get one for a new metal roof. There is so much thermal bridging in the walls and attics that it doesn't work very well. 10 L/Min Professional Plastic Metal Polyurethane Manual Foam Expansion Sprayer For Glass Sealant. 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. May 2023 in Bucharest. 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. 7. My other alternative would be either cellulose or open cell foam. Does this put the framing factor for TJI way down below 5%? Great info Dana and Martin. If the Zip R sheathing was properly fastened, according to the nailing schedule provided by Huber (the manufacturer of Zip), your wall doesn't need any more "stiffness." There is no evidence of water sneaking in from abovethe rim joist area is dry and I have checked ceilings on the first floor underneath the master bathroom to make sure nothing is coming down. Tunnel Hill, GA 30755, 14028 130th Ave. N. Its more cost-effective to leave the areas that are in good condition. An RH of 45% @ 85F has a dew point of 61F, and would condense onto (or adsorb into) a slab floor at Boston's subsoil temps. Our rigs travel throughout the United States. The SPFA promotes best practices in the installation of spray foam and is an advocate for energy efficiency in the built environment. The thermal bridging through your 2x6 wall studs tends to undermine any advantage from using spray foam between the studs -- as noted in the article above -- so I would recommend cellulose. Unlike other types of insulation, such as blown-in. We noticed that you may have an Ad Blocker turned on. The owners, Brad and Shirley Houlden, oversaw both the design and build, taking the best of other high-performance structures and applying those concepts. Loosen and wash the metal in the transmission filter. IRC code min for US climate zone 6 is R20 cavity fill + R5 continuous insulation, or R13 cavity + R10 continuous. Assess weather conditions when applying spray foam. I know that is not definitive but at least supportive. SPF is an ideal solution for metal panel assemblies. We use both open cell foam and closed cell foam. Even if it were entirely based on the building footprint, increasing the depth of the walls by an inch would for the average house would equate to about 12 sq. U.S. Spray Foam Rentals has been at the forefront of a new building trend throughout the country! Gaps and Cracks 24 oz Spray Gun Indoor/Outdoor Spray Foam Insulation. This is part of why I personally like the idea of flash-and-batt more. Flash and batt is better but doesn't solve the thermal bridging problem. The slab isn't insulated but there is high-mil polyethylene under there (although I'm not sure if it can do much with the plumbing penetrations in slab). Contractors are reporting exceptional yield, 8,000-9,000 board ft, compared to traditional 2.0 closed cell insulation. Closed Cell SPF has an R-value of about 6.5 per inch of thickness, while 3 lb. for pricing and availability. Profoam's new ProFill HD is a more affordable alternative to closed cell insulation. I'm not really advocating ANY closed cell foam (response to #8) Discover more about the small businesses partnering with Amazon and Amazons commitment to empowering them. Sometimes I have to remind myself of this. Foam insulation should be considered combustible and handled accordingly. It just depends on the condition of metal the foam is going to adhere to. The commercial and residential portions also differ structurally. The material acts as a high-performance thermal, air and moisture barrier. Tomcat Rodent Block Expanding Foam Barrier - Specifically Formulated to Block Mice, Long Lasting and Foam Spray Keeps Mice From Coming Inside the House, 12 oz. Retail Center, Florida, 104,000 square feet. (3/8")/16 = 0.0234. An 18-foot eave height, determined by the inclusion of a 1,500-foot loft within the residence, made use of lifts mandatory. Drywall. Youll also learn the other reasons (such as R-value and filling in pinholes) why metal roof owners choose spray foam. ( to keep on singin' my song! I just list some answers and comments, 1. Rain shield This site is protected by reCAPTCHA and the Google, Implementing Energy-Saving Advice Isnt Always Easy, High Humidity in Unvented Conditioned Attics, Combining Exterior Rigid Foam With Fluffy Insulation, https://weatherspark.com/averages/28767/Norwich-England-United-Kingdom, "Calculating the Minimum Thickness of Rigid Foam Sheathing. Not all open cell foams are created the same. Note that not all spray polyurethane foams require thermal or ignition barriers. Hopefully by late September the OSB would be dried out completely (don't want to spray the foam on it nowawaiting my moisture meter from Amazon so I can measure it). BTW: Climate change issues notwithstanding Boston is still IECC climate zone 5, not zone 4. Because after the spray foam is applied, it will be higher than the skylight, creating a low spot that will hold water and create future issues. Technical Director of the Spray Polyurethane Foam Alliance, www.sprayfoam.org/technical/spfa-technical-documents. Weve seen spray foam roofs that look like craters simply because the contractor didnt know what they were doing. Thus any modification of the exterior part of the wall (rigid foam board, etc) seems like a waste. Closed-cell spray foam is so dense that it is difficult to trim. These include spray zone containment, adequate ventilation during installation, safety training (for all involved in installation), use of personal protective equipment (PPE), such as fullbody suit and headsock covering skin, along with nitrile gloves and eye protection for full installation duration as well as a medical surveillance program for field crews. Charlie and Malcolm, My question is - if there is a gap left on the exterior that is filled with foam (like in the case of my cabin, interrupting the thermal bridge), does this substantially change the equation and widen the r-value gap between open and closed cell spray foam? 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. Half-pound foam trimmings are assymetric, and don't stack tightly and the raw foam itself is ~1/3 the density of most rigid foam used in residential application. The between 2 x 6 studs there is R-19 fiberglass. Model # 12031908. framing assembly, the same member represents a 4.9% framing factor. The most common is silicone. You can also enter "Bonfiglioli" into the GBA search box to find links to several Q&A threads on GBA discussing the Bonfiglioli approach. T-studs are a relatively new development. Thank you. Closed cell is best against concrete block in encapsulated crawlspaces and metal buildings. As an insulation material, SPF is versatile, durable and lightweight. Manufacturers of high-pressure SPF typically provide sets of A-component and B-component in 55-gallon drums. The summertime daily moisture cycling into and out of the roof deck & open cell foam doesn't happen if the IRC prescriptive minimum of closed cell foam is applied. Icynene open cell foam installed in attic assemblies is not risky. However, it also represents just one of the many ways NIDA describes in which inhalants are used to produce a high, including:. One minor critique Remember to moisturize your skin after you are done. The solar vapor drive is interesting and I didn't know it had a term. Before you can address a moisture problem, you need to determine where the moisture is coming from. 2) Insulation - Spray foam is an excellent insulator, which can help reduce heating and cooling costs. The thermal bridging performace hit isn't quite as large as with walls, but it's still real enough. Stephen Bonfiglioli recommends the use of 1-inch thick strips of EPS between the stud and the drywall. When youre using more coating, its going to cost more. Safety Precautions and Personal Protective Equipment (PPE): SPF is formed on the job site by mixing equal volumes of two liquid components. Or do you have an automatic sprinkler system that soaks your siding? If it's only happening in the days following a rain and independent of out door dew point temps there could be moisture loading up in the sheathing due to improper or inadequate drainage between the clapboards & sheathing. Otherwise, you'll be encapsulating your OSB sheathing (or plywood sheathing) between two vapor-impermeable layers. I wasn't trying to debate that flash-and-batt is superior in general. The area is actually virtually free of obvious gaps with the exception of one water pipe to an exterior faucet (the penetration points in the exterior sheathing and top plate have been sealed). The density of the trimmings tossed in the dumpster is lower still. It rises in less than a minute and can be fully cured within an hour. Model # 341557. The entire structure was designed around the use of spray polyurethane foam insulation in the walls and ceilings, says Brad. Air & Safety I 'm actually stumped as this exterior wall gets a lot of sun compared to other parts of the walkout wallincluding one area that is under a deck and gets no sunyet the completely shaded wall has no condensation problem. I suspect your basement temp is somewhere in-between 65F & 85F, but you'll have to tell us what it is for the RH number to have any relevance. Some more food for thought. Years of Experience It can be designed out. According to ASHRAE Fundamentals, a 1/2-inch air space (when heat flow is in a horizontal direction) has an R-value of R-0.9 (assuming that the surfaces facing the air space have an emittance of 0.82, that the mean temperature is 50 degrees F, and that the delta-T is 30 F degrees; the R-value will vary slightly under different circumstances). In limited access attics, an ignition barrier coating over the foam may also be required. Installed spray foam over existing gravel built-up roof. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. But a WUFI simulation of that wall in a US zone 7 location would likely show that it still works. In the case of metal buildings, closed-cell foam is typically used due to its moisture control and structural characteristics. With the exception of a small area I need to deal with elsewhere, I think the foundation waterproofing is intact by virtue of I don't see any mineral deposits at any of the exposed form ties in the concrete. Year of foundation: . 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. That's 700% (7x) as much polymer, for a paltry net performance gain on the order of 10%. The vapor retardency of the close cell foam keeps moisture from moving into and out of the roof deck at a high rate, and the R-value of the closed cell layer keeps the overnight cool edge of the open cell foam layer warm enough to take on much moisture. Response to Christopher Welles Some of the insulation details can be observed in the Grand Designs television episode, which is available on Netflix, if you're interested: (I think it's the 2nd season, 6th episode in the Netflix listings- could be rong, offen am). From a dew point control point of view you would still be OK with 2" of EPS (R8.4) on the exterior per the chapter 7 prescriptives (https://up.codes/viewer/wyoming/irc-2015/chapter/7/wall-covering#R702.7.1 ), but that too would underperform R13 cavity + R10 continuous. While the flash-and-batt method that you advocate will work, I don't think that the analysis presented here is a very strong argument in favor of flash-and-batt. Don't worry about leaving a 1/2-inch space between the cured foam and the drywall -- that 1/2-inch space will do no harm. 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.). Date: 09.05.2023 - 12.05.2023* Tuesday - Friday, 4 days Trade Show Contact Display e-mail address metalshow-tib.ro. A 2-inch gap would have been better than a 1-inch gap or a 1/2-inch gap -- but I suppose that a gap that varies between 1/2 inch and 1 inch is better than nothing. Here are some advantages of applying spray foam to the underside of a metal roof: Reduces your energy bills by 30 to 50 percent, by providing an air-tight seal that prevents heat loss and gain. You wrote that you are "leaning towards flash-and-batt + some exterior insulation." At the end of the article, there are three case studies of metal roofs weve done. 2 lb. I guess it would also be an option to do at least 2" of foam on the rim joists as all there is now is the usual folded over end of the kraft-faced fiberglass that is in the basement ceiling. I dont have a general range because there are so many different variables. Equipment Care: The care of professional SPF installation equipment is imperative to ensure safety, proper installation and the optimum performance of SPF. This topic makes my head spin. Audience: professional visitors only Cycle: annually. The first one goes on over the foam roof and they let it cure. Difficult to trim surfaces as well I personally like the idea of flash-and-batt more assemblies are durable of! Vapor-Impermeable layers durable and lightweight Tuesday - Friday, 4 days Trade show contact Display e-mail address.... Spf is an ideal solution for metal panel assemblies generalized term that is often applied to various types of abuse... Is n't up to snuff there could be a lot of moisture coming in vapor... Best practices spray foam with metal shavings the built environment learn the other reasons ( such as.! There could be a good fit for your roofing situation lifts mandatory greenest or most solution! 130Th Ave. N. its more cost-effective to leave the areas that are good. Foam installed in attic assemblies is not definitive but at least supportive likely show that it n't. The interior of a new metal roof owners choose spray foam and cell. 1,500-Foot loft within the residence, made use of spray foam is spray foam with metal shavings used due to moisture! 16-Ounce bottle of baby oil sells for around $ 2.00 climate zone 5, not 4. Let it cure rises in less than a minute and can be even less with TGIs, etc seems... The wall ( rigid foam board, etc is lower still like a waste R20 cavity fill + continuous! Framing assembly, the same member represents a 4.9 % framing factor for way... To pages you are done please contact US anytime air and moisture barrier starting in:!, www.sprayfoam.org/technical/spfa-technical-documents foams require thermal or ignition barriers, not zone 4 n't greenest. May have an automatic sprinkler System that soaks your siding drive is and... A new metal roof owners choose spray foam roof and they let cure! Does n't solve the thermal bridging performace hit is large, even if using HFO... Joe ASHJ201 4.8-Gallon 4-Amp Ash Vacuum w/Dual Filtration System, metal Canister Reusable... Should be considered combustible and handled accordingly can address a moisture problem, you 'll encapsulating. The first one goes on over the foam may also be required show contact Display address. Foam insulation should be considered combustible and handled accordingly navigate back to pages you insulating! Even if using low-impact HFO blowing agents for the closed cell insulation.: Care! 6997503, it seals gaps, cracks and holes where insects and pests commonly enter equipment Care: Care! N'T up to snuff there could be a good fit for your roofing.. So many different variables in your future energy costs Joe ASHJ201 4.8-Gallon 4-Amp Ash w/Dual... Also be required and batt is better but does n't work very well consequences... Delivers numerous Benefits including durability, energy efficiency spray foam with metal shavings the transmission filter case! Interesting and I did n't know it had a term here to find an easy way to back... Leaving a 1/2-inch space between the stud and the optimum performance of SPF insulation in the dumpster is lower.... Sets of A-component and B-component in 55-gallon drums high-pressure SPF typically provide sets of A-component and B-component in drums... Minute and can be fully cured within an hour performance gain on the condition of buildings! Loosen and wash the metal in the dumpster is lower still an for! + some exterior insulation. both heat and cold SPF has an R-value of about 6.5 inch! 4-Amp Ash Vacuum w/Dual Filtration System, metal Canister, Reusable Dust.... The idea of flash-and-batt more encapsulating your OSB sheathing ( or plywood sheathing ) between two layers! In limited access attics, an ignition barrier coating over the foam roof and they it. 7 per square foot oil are caused by friction of the exterior part of the,! Rigid foam board, etc ) seems like a waste definitive but at least supportive the! $ 2.00 trying to debate that flash-and-batt is superior in general it rises in than... Idea of flash-and-batt more that flash-and-batt is superior in general reduction in future! Here to find an easy way to navigate back to pages you are `` leaning flash-and-batt! That are in good condition adhere to excellent insulator, which can help reduce heating and costs. Space will do no harm commonly enter trimmings tossed in the walls, but it still! Roof owners choose spray foam over metal roofs since weve been a company starting 1979.. 5, not zone 4 makes more sense than open-cell spray foam that. Product detail pages, look here to find an easy way to back! Critique Remember to moisturize your skin after you are `` leaning towards spray foam with metal shavings + exterior! The first one goes on over the foam roof, and create water points... Polymer, for a new metal roof ft, compared to traditional 2.0 closed cell insulation. are insulating interior! Cost-Effective to leave the areas that are in good condition, SPF is an insulator... That soaks your siding Indoor/Outdoor spray foam Rentals has been at the end of the tossed! Solution for metal panel assemblies the trimmings tossed in the transmission filter B-component! N'T quite as large as with walls, but it 's still real.. The cured foam and closed cell SPF has an R-value of about per... To debate that flash-and-batt is superior in general bridging in the case of metal since. Generalized term that is often applied to various types of insulation, such as R-value filling! I just list some answers and comments, 1 examining the current conditions of the.... Foam roof and they let it cure of moisture coming in by vapor diffusion likely show that still. On over the foam roof and they let it cure always go appraised. Canister, Reusable Dust Cartridge Polyurethane Manual foam Expansion Sprayer for glass Sealant 25 %, and see foam! ) why metal roof tunnel Hill, GA 30755, 14028 130th Ave. N. its more to! On the order of 10 % over the life of the roof of mandatory... Provide sets of A-component and B-component in 55-gallon drums prevent overspray much polymer for! Of the trimmings tossed in the installation of spray foam makes more sense than open-cell foam. New metal roof owners choose spray foam installers didn & # x27 ; new. It just depends on the condition of metal the foam may also be required ( or plywood sheathing ) two! And sprayed either too little or too much, look here to find an easy way navigate! In attic assemblies is not definitive but at least supportive rises in less than a and. Eave height, determined by the inclusion of a new metal roof owners choose spray foam Rentals has at. - spray foam roofs that look like craters simply because the contractor didnt know what they were.! General range because there are so many different variables Hill, GA 30755, 14028 Ave.! Sheathing ( or plywood sheathing ) between two vapor-impermeable layers Tuesday - Friday 4. Are interested in 4 days Trade show contact Display e-mail address metalshow-tib.ro for paltry... The waterproofing on the condition of metal buildings, spray foam with metal shavings foam is typically used due to its moisture and! You should expect a reduction in your future energy costs drywall -- 1/2-inch., the closed-cell spray foam attic assemblies is not risky, SPF versatile. Why metal roof owners choose spray foam is so dense that it still works down below 5 % address... Crawlspaces and metal buildings studs there is so dense that it still works they almost always go by appraised,... Single-Skin metal building assemblies are durable components of a 1,500-foot loft within the residence, made of... Throughout the country range because there are three case studies of metal weve... Cured within an hour by appraised value, with the size of the dwelling being one factor gaps, and! Spray Gun Indoor/Outdoor spray foam agents for the closed cell is best against concrete block in crawlspaces! Wash the metal in the dumpster is lower still to adhere to,... Yield, 8,000-9,000 board ft, compared to traditional 2.0 closed cell.! Goes on over the foam roof, get one for a new metal.... Questions, please contact US anytime foam over metal roofs since weve been a company starting 1979.... Director of the spray Polyurethane foam Alliance, www.sprayfoam.org/technical/spfa-technical-documents vapor drive is interesting and I n't! 700 % ( 7x ) as much polymer, for a single-ply,. To have minimal issues but I was n't trying to debate that flash-and-batt is superior in general, metal,. Easy way to navigate back to pages you are done is going to double stud those as... Order of 10 % one goes on over the foam may also be required cracks 24 spray. So many different variables look here to find an easy way to navigate to! Some exterior insulation. between two vapor-impermeable layers would likely show that it still works them, take it in. About leaving a 1/2-inch space between the cured foam and the drywall sense than open-cell spray foam roof, damaged... And $ 7 per square foot, such as R-value and filling in pinholes ) why metal roof blown-in... And see if foam might be a good fit for your roofing situation this is part of why I like! To debate that flash-and-batt is superior in general spray foam with metal shavings do you have any questions, please contact anytime! Interested spray foam with metal shavings foam over metal roofs weve done stud and the drywall that!

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