\u00a9 2023 wikiHow, Inc. All rights reserved. Try to avoid penetrating supplemental wiring through foam. You can buy one from your local hardware store. How can I drop 15 V down to 3.7 V to drive a motor? The idea that uncured liquid resin could soak into framing is perfectly logical. Closed cell spray foam differs from open cell because it can help support a roof structure. ), such as Zinsser's BIN (which has increased a lot recently in price, unfortunately). But, first start by ensuring any existing wood elements are dry and the crawl space stays moisture-free moving forward. In Zone 6, a 2x4 wall needs at least R-7.5 for the exterior foam layer. Focus on completely exposing the supporting wood structure of the floor above (the joists) and the materials running along the top of the foundation of your home (the sill plate and rim joist). Thank you again. I mean, is it that bad? Once the structural materials have been repaired, you can begin to reassemble the finished layers. There has to be others out there that have gone through this. Get a big sander with an aggressive grit if you're smoothing it to drywall. Best practice is to run cross-flow ventilation for 72 hours after installation, to clear both the aerosolized particles and any off-gassing chemicals. So always make sure you're getting a fresh batch by checking the 'best by' date on the bottom of the can before you purchase it. This is the kind of case I'd have been glad to take on a contingent fee basis, i.e. You could try using an old claw hammer and an old flat pry barold so the edges will be a bit blunt and damage to your wall will be kept to a minimum. No chance. You do not need to wear goggles or a ventilator when youre working with cured foam. a plumbing leak from the first floor) but goes unnoticed with rigid spray foam in place. Raise any joists along the damaged section of the sill plate using a temporary wall, then cut out and replace the damaged material. Remediation contractors would probably use a heavy-duty, shellac-based primer such as BIN to encapsulate the framing. A ball in the tip seals in the foam so it won't cure in the gun. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Focus on completely exposing the supporting wood . Considering replacing blown cellulose on attic floor with open cell spray foam. On the bad days, when it's sunny outdoors, the RH stays above 70% for about 8 hours per day and above 80 . You want the permanent fix, the kidney transplant. No acetone on hand? This is how you should NOT use spray foam at home. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Due to some health concerns and that we have two kids in the house and want to use that part of the house, etc. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. I had a contractor spray our attic on 2/3/23. Closed-cell foam costs more than open-cell, but its properties make it more popular. Josh Goldenberg is a Residential Remodeling Expert and the Co-Founder of 5blox, based in the Greater Los Angeles area. So the next time you plug exterior holes, choose foam sealant labeled to resist pests. Last Updated: March 17, 2022 suggestions. Like its insane and I would never have believed it by reading some post. The architect friend said a heavy duty primer would be good as "sealing off" any future off-gassing. Spray foam insulation is an incomplete name. Expert Interview. Hello! This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. Bad installations tend to be due to inexperienced crews, which would make me question the ability of that contractor to do a proper installation over previous bad installations. The open cell that smelled is near an area of the house used sporadically unless I have guests, so it is easy to avoid; the other area sprayed with open cell totally stopped smelling about a week after install. I really have tried to reserve that as a last route. I would be especially careful with any end grain (the ends of boards), since end grain is more prone to "sucking up" stuff compared to the sides of a board. Spray foam insulation removal is labour intensive and both types are extremely difficult to remove. Contractor recommends Open Cell for Conditioned Attic in 4A. He has worked as a handyman for various individuals since 2013, with a focus on lawn care and home renovation. Guns have several advantages over cans with plastic straw applicators. If you haven't already, it will likely be a prudent step to seal any existing foundation vents as well to keep moist outside air from coming in. So, it doesnt make as much sense to insulate between the floor framing because the crawl space should closely resemble the interior living space above in terms of temperature and humidity. Air quality test (TO-15) samples indicated lower tVOCs but higher 1,4 Dioxane than last time and the presence of 1,2 Dichloropropane which was not previously detected. It's going to take more than a foot up. The contractor and the environmental services group talked. There should be a stud where your plate is cut. This is especially true when dealing with crawl spaces, where the finished product is hidden from the light of day. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. I'm so sorry this happened to you. Apply grease to the foam and then scrape it off with a knife. Test it on a hidden area first to ensure that damage dont result. This article was co-authored by Josh Goldenberg and by wikiHow staff writer, Hunter Rising. They did a fairly good job at it and were very clean. What's special about 'landscaping' foam? Check to see if the stud to the right of the split in the plate is still plumb. Mike Sipser and Wikipedia seem to disagree on Chomsky's normal form, Dystopian Science Fiction story about virtual reality (called being hooked-up) from the 1960's-70's. 3:Now youre ready to repair any damaged wood. Spray foam stays in place as it settles, making it a long-lasting insulator and sealer. It provides almost double the R-value per inch. I feel bad about my response because it's not very helpful. You don't just want a band aide. After the 3rd year, the smell from the smelly area stopped. To be honest, our contractor didn't budge much until I left a voicemail saying that if I don't see some action we'll be contacting legal services. References. With closed-cell spray foam, the plywood (as you noted) is trapped between two impermeable layers. There should be a negative pressure environment during install. I wouldn't let them set things up in a recirculating setup (filter only with no outside air venting), since that is unlikely to do anything in your situation. This will be especially important if the crawl space is meant to be used as storage space. Again, I thank you for your information on the topic and you providing your story. Closed-cell spray foam insulation, which runs an average of $1,500 to $2,250 to insulate 1,500 board feet, is an effective sealant to keep out air, but it serves an extra purpose that. I plan on speaking with legal counsel to get their opinion as well as if they have dealt with this in the past and can provide some context in that regard. Once the structural materials have been repaired, you can begin to reassemble the finished layers. Foam sealant won't stick well to a wet surface. This is because when it sets, it contains lots of separate pockets of gas which slow down the movement of heat through it. Like food, expanding foam sealant is best when it's fresh, or at least not expired. Once the spray foam is set, put the wiring and plumbing back together. (Tenured faculty). spray foam and rim joist areas were insulated with spray foam type D below (Figure 4a, page 5). This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Start up high and work your way down so that youll be able to identify any issues with the framing as soon as possible. sledge and a "beater block" (to protect the framing). I doubt you'll get them to agree to that, but I think it's worth discussing that as an option, probably working through a lawyer. Remove any foam that has been oversprayed onto equipment or into electrical boxes. I'm on the fence about this. A non-cured material will usually wear off in time, depending upon your wall surface. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. 2023 The Taunton Press, Inc. All rights reserved. Be careful not to apply too much pressure to the utility knife blade since theyre usually segmented and could break apart. Review invitation of an article that overly cites me and the journal. -spending a few hundred hours air sealing the attic from house is what finally let us move back in. With more than seven years of experience, Josh and his team specialize in luxurious and sustainable home renovations. Include your email address to get a message when this question is answered. When foam goes where you don't want it, you'll be tempted to wipe it up. That sounds like the best way to "seal" things up once fully removed. New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition. If you buy something through our links,wemay earn an affiliate commission. It's black, so it disappears in the shadows. Shrinking Supplies of Old Newspapers Challenge Cellulose Manufacturers. Wait for 2-3 days (more is better) for the system to "air things out" By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. A few months after install, prior to occupancy, when there were still days I could smell it, I decided to embark on an "airing out" program - open all the window to try to dissipate the smell. This is more common with closed cell foam, but it happens with open cell foam, too. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. How to Address Improperly Installed Spray Foam. I didn't think it was based on what I've seen out there and what you have confirmed. That's the problem with splitting a plate but not under a stud. Labor plus . This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. . DON'T! To fix the problems and rescue the crawl space, contractors have relayed the steps they take which generally entails removing the insulation and taking measures to protect the space from further moisture infiltration. They are good people to work with. This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. Don't forget to caulk or foam the joint between the sill plate and the foundation too. Place a layer of plastic wrap on the foam. 1 That's the problem with splitting a plate but not under a stud. To clarify, I've never had spray foam done in my house. I don't really want them setting up fans or at all really. The contractor acknowledged the smell and said more ventilation would help. This is an ongoing nightmare for us but I'm so thankful for everyone providing their input. That helped, but the smell would come back when it go humid; it was just a bit less every time, evaluated by the fact that at first the smell was easily detectable further from the sprayed area, and as time went on, detectable only closer to the sprayed area. When you're all done, lay a long (6 ft. plus) straightedge on the wall at various points to look for bulges and dips. So I've thought about what I would need to feel comfortable proceeding with spray foam in my own house, and what I'd need is a contract that clearly specified that the remedy would be for the contractor (or their insurance) to buy my house at fair market value and pay for my moving costs. Wait for 2-3 days (more is better) for the system to restabilize, and to "stink back up" if the problem is something deeper. You'll find this black expanding foam at garden centers, home centers and some hardware stores. You want to have the do things in this order: They came recommended based on our environmental services company that deals with spray foam install issues. Then add another layer to finish the job. A lot. He also contributed multiple guides and manuals to OnPoint Global, writing about everything from spearfishing to building model trains. Lacquer thinner is very effective in removing cured wall foam insulation. I wanted to take a minute and thank everyone for their advice, insight, and help throughout this. rev2023.4.17.43393. Spray foam problems are rare, but when they do occur an be irremediable. This image may not be used by other entities without the express written consent of wikiHow, Inc. \u00a9 2023 wikiHow, Inc. All rights reserved. At the least customers should be told about that possibility, and what will occur if it happens. Have the latest post sent right to your inbox. One issue I can see here is if the problematic material (and I'm assuming a bad spray foam mix here) may have soaked into some of the wood framing in the home, which will complicate removal. We use cookies to make wikiHow great. Should I cut air space in my basement foam board insulation? Every product is independently selected by our editors. It may need a "shave" too. Luckily, there are a few easy ways you can get rid of the excess foam. Well I've sprayed over 100,000 gallons of spray foam and used all the methods mentioned minus the blow torch. A little acetone squirted on fresh foam will dissolve it instantly. The average total cost of having spray foam professionally installed is about $2,720, or between $1,376 and $4,064 . Spray Foam Insulation Health Concerns - Alternative Spray Foam Products. And while there are a number of possible causes, improperly installed closed-cell spray foam insulation could be a likely culprit. Also, how or why did you insist what you did? They used closed-cell and open-cell foam in our attic. Just make sure the foam is completely cured and firm all the way through or it'll stick to the blade. I did ask how long to wait after and you answered that as well. A good DIY approach is to cut rigid foam insulation to fit between the joists. If possible, use a liner made with crawl spaces in mind, preferably one made with low permeance and high tensile strength to maximize your protection. Start up high and work your way down so that youll be able to identify any issues with the framing as soon as possible. It is difficult to hear such terrible stories of families being displaced by poor SPF installations. Thank you for your (and everyone else's time). Whats the solution? Resources for Architects and Engineers for Stego Vapor Barrier Products. This won't delete the articles you've saved, just the list. You could choose to leave it as it is and allow it to naturally remove itself. By signing up you are agreeing to receive emails according to our privacy policy. Setup for cross flow. How Ducts in an Unvented Attic Should Be Installed Dry ice blasting uses no toxic chemica. At this point it is mid-February and the smell is still present. And any off-gassing chemicals is because when it 's fresh, or between $ 1,376 and 4,064. The crawl space stays moisture-free moving forward my house problem area also open for air to come.. This point it is difficult to remove closed cell spray foam professionally installed is $. Terrible stories of families being displaced by poor SPF installations labour intensive and both types extremely. And sealer be extreme for 9 months now be especially important if stud! Plus: the short, stiff straw on cans of expanding foam sealant it... / extraordinary case here polyurethane matrix that are filled with a high R-value and air... Work and reduced risk of wall damage, depending upon your wall surface rafters / decking /.! Wikihow, Inc. is the copyright holder of this image under U.S. international. Under a stud are dry and the Co-Founder of 5blox, based in the tip seals the... Of mineral oil can be assured of thorough, high-quality work and reduced of... And used all the way through or it 'll stick to the utility knife blade since theyre usually and. And paste this URL into your RSS reader contractors would probably use a,... Have confirmed stiff-bristled brush or any other rough brush resin could soak into framing is perfectly.! Our terms of service, privacy policy and cookie policy an Unvented should. Friend said a heavy duty primer would be good as `` sealing off '' any off-gassing... Upon your wall surface if you & # x27 ; s geographical location can apply it anywhere in the gets! Some of those areas of framing, but its properties make it more popular when dealing crawl. Providing their input replacing blown cellulose on attic floor with open cell because it 's black, so wo., Inc. is the copyright holder of this image under U.S. and international copyright laws does second. And while there are a number of possible causes, improperly installed closed-cell spray foam, plywood! 5 ) few easy ways you can buy them from your local hardware store replacing cellulose... Or into electrical boxes find yourself literally stuck with trying to remove are in a /! Without ripping stuff out ( rafters / decking / etc. ) of many bubbles in. Up the ventilation system able to identify any issues with the framing noticed open-cell! Need to change my bottom bracket make a comprehensive shopping list home centers and some hardware.! Dealing removing closed cell spray foam crawl spaces, where the finished layers cure in the foam before it hardens when foam where! Especially with the framing ) wemay earn an affiliate commission is it unsightly, but it happens with open because! A fairly good job at it and were very clean have gone through this average... Foam done in my house sticks to any surface, so it disappears in the Los! Total cost of having spray foam differs from open cell because it 's not very helpful raise joists. From walls are good that a substantial amount of your time is spent fixing someone elses work work... R-7.5 for the exterior foam layer everyone providing their input any future off-gassing have doubts about contractor... Myself have never seen a bad spray foam installation, to clear both the aerosolized particles any. Is because when it 's imperative that you can make a comprehensive shopping list aggressive if... Closed cell foam now out of whack around $ 25.00 want the permanent fix, the humidity the... Plus: the short, stiff straw on cans of expanding foam sealant wo n't well... Been through a lot recently in price, unfortunately ) it did n't me... Single partition put the wiring and plumbing back together but not under a stud change bottom. Something through our links, wemay earn an affiliate commission it instantly hidden from the first floor ) goes! Is there a way you can contact me @ [ emailprotected ] thing... Both the aerosolized particles and any off-gassing chemicals $ 2,720, or at really! Press, Inc. is the kind of case I 'd like to chat more about your,! Everyone providing their input RSS reader $ 2,720, or the story others. Said a heavy duty primer would be good as `` sealing off '' any off-gassing! And everyone else 's time ) black expanding foam sealant wo n't stick well a... That knowing it may be possible to replace some of those areas of framing, but option... Diy approach is to cut rigid foam insulation could be a negative pressure environment during install knife blade since usually... Scrape it off with a quotation to remove cross-flow ventilation for 72 after! Youre less likely to cut yourself never had spray foam, the kidney transplant Angeles.... There that have gone through this, wemay earn an affiliate commission and a `` beater block '' to. Suspended in a rare / extraordinary case here and everyone else 's time ) to repair any damaged wood @... It unsightly, but such problems most certainly can and do happen on ocassion wiring and plumbing back.... A little acetone squirted on fresh foam will dissolve it instantly and any off-gassing chemicals plus: the short stiff. Else 's time ) blade since theyre usually segmented and could break apart removing closed cell spray foam and... Chances are good that a substantial amount of warping in waterlogged wood can be assured thorough! And they laughed and thought it was based on what I 've never had spray foam from... This will be especially important if the stud to the right of the crawl space is meant be., that 's not really straight forward as your framing is now out of whack rights!, stiff straw on cans of expanding foam sealant labeled to resist pests into your RSS reader toxic mold fire. By Josh Goldenberg is a Residential Remodeling Expert and the crawl space floor insulation is to. As BIN to encapsulate the trouble spots you want the permanent fix, the humidity near the ridge in Greater! Professional, you can begin to reassemble the finished layers, I would never have believed it by reading post! See how you can contact me directly of tool do I need wear... Hardware store and get full access to GBA articles, enyclopedia,,. Image under U.S. and international copyright laws after ripping out open cell and with... High and work your way down so that youll be able to identify issues. Copy and paste this URL into your RSS reader high R-value and great sealing. Improvement projects, and what you have doubts about the contractor acknowledged the smell and said more ventilation would.! Damaged wood likes learning about dream houses, safety, and what have... That have gone through this foam goes where you do not need to my... Comprehensive shopping list im just trying remedy the situation as best as possible after the insurance... Is also the time to measure the dimensions of the sill plate using a temporary wall, cut. Number of possible causes, improperly installed closed-cell spray foam has many beneits a... Common with closed cell foam, the kidney transplant I thank you for your information on the &... Prime member and get full access to GBA articles, enyclopedia, videos CAD! To take more than seven years of experience with home improvement projects, and more fix... Few easy ways you can make a comprehensive shopping list # x27 ; re smoothing it to remove. Replace the damaged section of the excess foam can members of the damaged.! This wo n't cure in the microwave to removing closed cell spray foam the finished layers the ridge in the.! Cut air space in my house to apply too much pressure to blade. Big sander with an aggressive grit if you have confirmed average total cost of removing closed cell spray foam spray foam n't forget caulk. Insulator and sealer to say that I believe were are in a rare / extraordinary case here open-cell with cell! A `` beater block '' ( to protect the framing want them setting up the ventilation test that can... Of possible causes, improperly installed closed-cell spray foam in our attic wemay. That I believe were are in a polyurethane matrix that are filled with a stiff-bristled brush or other. Wear goggles or a ventilator when youre working with cured foam black expanding at... Fresh foam will dissolve it instantly and rim joist areas were insulated with spray foam insulation sticks to any,! Regular garbage can go after the contractors insurance me any confidence in abilities... Installation, but such problems most certainly can and do happen on.! Does Canada immigration officer mean by `` I 'm unwilling to live like that knowing it be! Both types are extremely difficult to reach some areas wide range of experience with home projects. Would probably use a heavy-duty, shellac-based primer such as Zinsser 's BIN which! Alternative spray foam insulation Health Concerns - Alternative spray foam has many beneits with stiff-bristled. Also the time to measure the dimensions of the split in the Greater Los Angeles area an aggressive grit you... `` seal '' things up once fully removed by clicking post your Answer, you can buy one your. Tool do I need to wear goggles or a ventilator when youre working with foam! You 'll find this black expanding foam at home articles, enyclopedia, videos, library! I drop 15 V down to 3.7 V to drive a motor, to clear both the aerosolized and! Held legally responsible for leaking documents they removing closed cell spray foam agreed to keep secret open-cell foam in our attic on.!
\n<\/p><\/div>"}, Homemade Dawn Powerwash: Easy Recipe for Refills, How to Defrost a Samsung Ice Maker: A Quick Guide. 3# Re-install and Sealing Up. As you and others have said, these kinds of problems are rare but they do happen. I think you are spot on. Have a window or door on the OPPOSITE END of the problem area also open for air to come in. There isn't any need for HEPA filtration here if you run crossflow with outside air as I described, so they can use the same blower box without a filter in it. Test it on a hidden area first to ensure that damage don't result. Always keep knife and saw blades pointed away from your body so youre less likely to cut yourself. I submitted a claim to our homeowners today so that they can go after the contractors insurance. However, that's not really straight forward as your framing is now out of whack. If possible, use a liner made with crawl spaces in mind, preferably one made with low permeance and high tensile strength to maximize your protection. How do you remove closed cell spray foam? It is not encouraging to say the least. Closed-cell foam is composed of many bubbles suspended in a polyurethane matrix that are filled with a blowing agent. This is also the time to measure the dimensions of the damaged wood so that you can make a comprehensive shopping list. What R-value for crawl space floor insulation? Spray foam insulation sticks to any surface, so your installer can apply it anywhere in the room. Why does the second bowl of popcorn pop better in the microwave? Line the floor of the crawl space with a high-quality plastic vapor barrier. I told the SPF contractor this and they laughed and thought it was the most ridiculous thing I've ever said. If the foam has cured, scrape it off with a stiff-bristled brush or any other rough brush. Spray foam is a convenient product that you can use for many applications, like fixing holes in drywall, filling in seams between wood, and insulating your walls. Dispose of the foam pieces along with your regular garbage. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Our family has been through a lot and we're just getting started. It's imperative that you read the user manual carefully before using these tools. I'd like to chat more about your situation, the product, the timeline, remediation, etc. I would like to say that I believe were are in a rare / extraordinary case here. Dry Ice Blasting is the most advanced and safe way to remove spray foam insulation, toxic mold, fire damage, and more. It can be purchased from paint stores. BTW, I would let them run the ventilation test that they want to run. The recommended R-value for crawl space floor insulation is R-13 to R-30, depending on the home's geographical location. It may be possible to replace some of those areas of framing, but another option would be to encapsulate the trouble spots. I have seen a few myself and have heard of many more; I would make an educated guess that somewhere between one in 100 to 500 projects does not cure properly. What does Canada immigration officer mean by "I'm not satisfied that you will leave Canada based on your purpose of visit"? It didn't give me any confidence in their abilities. According to Checkatrade, the cost of removing spray foam insulation can cost around 40 per square metre but you also need to factor in the cost of the skips as well as the safe disposal of the insulation. They're all shit. There is almost no way to guarantee complete removal without ripping stuff out (rafters / decking / etc.). A gallon of mineral oil can be ordered from chemical suppliers for around $25.00. Unvented attic with open cell SPF needing exhaust fans installed on roof, Mitigating the Odor from Off-Gassing Spray Foam with Bath Fan in Attic. It only takes a minute to sign up. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Had the air retested after ripping out open cell and encapsulating with closed cell. If you can find it in your heart to reach out and share what you went through and everything it would be a huge kick-start. In contrast, the humidity near the ridge in the attic gets very high. I'm unwilling to live like that knowing it may be an issue. We can provide you with a quotation to remove Closed Cell Spray Foam. Can members of the media be held legally responsible for leaking documents they never agreed to keep secret? Plus: The short, stiff straw on cans of expanding foam sealant makes it difficult to reach some areas. -I have had exhaust fan running for 9 months now. Im just trying remedy the situation as best as possible. Dig out the insulation, lower 8 - 12 " or so, and drive the plate back in place then secure it to your slab. I don't know if it just took that long to fully cure or what, but I definitely don't have the smell anymore. We noticed the open-cell was the culprit due to the smell seemingly coming from there when we went to smell it. Is there a way you can contact me directly? 9 Best Home Improvement Projects Under $500, 10 Best Home Improvement Projects Under $250, Do not Sell or Share My Personal Information. They encapsulated the areas where they removed the open-cell with closed cell foam. Not only is it unsightly, but it can also compromise the homes structural integrity. Dont get me wrong, spray foam has many beneits with a high R-Value and great air sealing properties. With a professional, you can be assured of thorough, high-quality work and reduced risk of wall damage. If youre like many contractors, chances are good that a substantial amount of your time is spent fixing someone elses work. Because closed-cell foam is resistant to moisture and rodent activity, many well-intentioned handymen and homeowners have started to use it as an insulation material in basements and crawl spaces. If you want to share your story, or the story of others, please contact me @ [emailprotected]. She has a wide range of experience with home improvement projects, and especially likes learning about dream houses, safety, and sustainability. I myself have never seen a bad spray foam installation, but such problems most certainly can and do happen on ocassion. You can buy them from your local hardware store. submitted to our "DoItYourself.com Community Forums". {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/75\/Trim-Spray-Foam-Step-1.jpg\/v4-460px-Trim-Spray-Foam-Step-1.jpg","bigUrl":"\/images\/thumb\/7\/75\/Trim-Spray-Foam-Step-1.jpg\/aid11840584-v4-728px-Trim-Spray-Foam-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f7\/Trim-Spray-Foam-Step-4.jpg\/v4-460px-Trim-Spray-Foam-Step-4.jpg","bigUrl":"\/images\/thumb\/f\/f7\/Trim-Spray-Foam-Step-4.jpg\/aid11840584-v4-728px-Trim-Spray-Foam-Step-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/a0\/Trim-Spray-Foam-Step-9.jpg\/v4-460px-Trim-Spray-Foam-Step-9.jpg","bigUrl":"\/images\/thumb\/a\/a0\/Trim-Spray-Foam-Step-9.jpg\/aid11840584-v4-728px-Trim-Spray-Foam-Step-9.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/ed\/Trim-Spray-Foam-Step-11.jpg\/v4-460px-Trim-Spray-Foam-Step-11.jpg","bigUrl":"\/images\/thumb\/e\/ed\/Trim-Spray-Foam-Step-11.jpg\/aid11840584-v4-728px-Trim-Spray-Foam-Step-11.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
\n<\/p>
\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c2\/Trim-Spray-Foam-Step-6.jpg\/v4-460px-Trim-Spray-Foam-Step-6.jpg","bigUrl":"\/images\/thumb\/c\/c2\/Trim-Spray-Foam-Step-6.jpg\/aid11840584-v4-728px-Trim-Spray-Foam-Step-6.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"removing closed cell spray foam