There is insulation in the ceiling of the basement of the type that you roll out, as well as the floor of the attic. Great Stuff PRO Window & Door 20 oz Insulating…, The Best Christmas Gifts of 2020 on Everyone's Wish List, These Are the 17 Highest-Rated Kitchen Knife Sets on Amazon, Shopping Guide: The Best Massage Guns and Theragun Alternatives of 2020, We Asked a Master Barber How To Cut Your Own Hair at Home Without Screwing It Up, The 29 Best Face Masks for Running or Cycling - See New Products from Rhone, Under Armour & Adidas, 62 Christmas Gifts For Her That Are So Good You Don't Even Need To Keep the Receipt. It’s sold separately by Great Stuff and other retailers. Often, the culprit is drafts — spots where you can feel cold air seeping into your home through window cracks or doors. However, if open-cell foam is installed at a thickness of at least 4 inches, it can be an acceptable air barrier. Ironically, although foam sealants are made to block out air and moisture, they actually need air and moisture to help set. This Fill and Seal foam will dry tack-free within 15 minutes and fully cure within eight hours. The foam comes out in a thin spray and quickly expands, effectively sealing and filling gaps. It is easy to use and apply with its attached straw applicator and provides a quick durable seal from the elements. Foam spray is messy, and the cans can leak. One of the most economical and effective solutions for drafts comes in the form of insulating foam sealant. GREAT STUFF PRO Pestblock Insulating Foam Sealant blocks insects and pests by sealing gaps, cracks and holes where they commonly invade the home. There is insulation in the ceiling of the basement of the type that you roll out, as well as the floor of the attic. It also works well for regular insulation purposes, too. Great Stuff makes many of the best insulating foam sealants, and this option is versatile enough for a variety of applications. If all of the information available on this website is daunting, then you should find an architect, designer, engineer, or builder that you trust and put your project in the hands of the professional you hire. Gloves and protective eyewear should always be worn. I believe the walls are concrete. Prices vary by region, market condition and chemical feedstock costs, but about $1-1.25 per square foot per inch of depth is roughly the range. Great Stuff Pestblock 12 oz Insulating Foam Sealant. But I want to make sure there are no serious drawbacks. Here's an article about creating a sealed crawl space with insulated walls: Building an Unvented Crawl Space. In fact, it’s listed as being able to be reused for up to 30 days. Windows and doors can be a major source of heat loss, but foaming sealant can sometimes be risky to use. The straw tip closes once you release the trigger, and this helps reduce foam from dripping out and blocking the opening, a common problem with canned foam sealants. (4) Have a rodent-proof attic that can be used for storage. It seals holes up to 1″ wide to help block drafts and insulate. To find such a professional, start doing some research. Moya, In most situations any more than 2" of closed cell foam carries a bigger lifecycle greenhouse gas burden (due to the HFC245fa blowing agent) than the energy use it offsets. My main concern would be whether that might excacerbate the Radon. How about open cell spray foam? I am working with a contractor but was hoping to have some knowledge myself. Good general purpose option. (5) Not release too many VOCs into the environment or, over time, into the house. Besides the obvious goal of insulating the living space (1st and 2nd floors), my goals are: (1) Insulate the basement for future use as a living room. My concerns there are (1) will they be able to pour a really good, hard slab in the limited space of the crawl space? Pros: Designed to be extra dense for additional insulative properties. This option from Great Stuff is a good general-purpose option for gaps and cracks. Lower density foam is excellent for occasional-use products like shipping foam, crafts, or guest room mattress toppers. The best insulating foam sealant is easy enough to use for regular consumers and with minimal instructions, but as with any DIY project, safety precautions are necessary. You may find that you need fiberglass insulation for larger gaps, but spray foam insulation is an effective solution for smaller holes around pipes, corners and even outlets. Either closed-cell spray foam or rigid foam insulation is a better choice. After all, you probably pay for that warm air every month. Here are a couple of more facts. Unlike most of the other options, a dispensing gun is needed. -What questions should I ask to make the installer is qualified (I’ve read that improper installation would be bad). There are no pesticides included, so it’s non-toxic and won’t harm bees. Don't be afraid -- start reading, and keep asking questions. The more I know the less sure I am about how to proceed. Also suitable for indoor use. Cons: It’s listed as reusable, but it’s more difficult to use the second time. Many insulating foam sealants are specifically designed for certain problem areas, so you can choose the one that best suits your needs. If you’ve sprayed excess foam, wait for it to dry, then cut it. High-density foam, Like The Foam Factory’s 2.8LB density HD36-HQ foam, is optimal for uses that receive heavy or daily use like couch cushions, bedding, or automobile seating. (4) The basement is a walk-out. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. Here's another article you may find useful: How to Insulate a Basement Wall. See: http://www.buildingscience.com/documents/reports/rr-1001-moisture-safe-unvented-wood-roof-systems/view. Pros: Value 20 oz size. Do you have any additional advice after the additional info I posted (climate zone etc.)? The “TriggerPoint” brand of foam rollers have a hollow, plastic core with foam wrapping around it that makes for a much more firmer feel. I've read a bit about the pros and cons of sealing the vents in the crawl space. The best insulating foam sealant for DIY purposes comes in a handheld can similar to hairspray or spraypaint. Loctite’s foam sealant has several features that are designed to make it especially effective and easy to use. Pros: One of the widest expansions of the options on this list, making it suitable for use on larger gaps. Do a little research before accepting a bid. It expands up to 1″, while some others on this list only expand 3/4″. I understand it absorbs moisture. Dow Great Stuff Pestblock. © 2020 The Taunton Press, Inc. All rights reserved. Using closed-cell foam in a double stud wall, Asphalt shingles, synthetic underlayment, closed-cell foam and buckled shingles. If used outside, however, additional protective covering should be used. In your case, tightening up the walls will have another benefit (assuming that the contractors do a conscientious job): it will help keep out the rodents. FAQ: Why Do Some Builders Avoid Foam Insulation? I'm a newbie so I believed him. Put an inch of XPS or EPS between the bottom plate of the studwall and the slab as a capillary & thermal break. I love the idea of pouring concrete in the crawl space. The textured surface works better than a completely smooth one. Moya, I use Northeast Sprayfoam. Moya, The product can seal inside the applicator after first use if you aren’t careful. Ask your friends and relatives about professionals they have worked with and trust. This feature has been temporarily disabled during the beta site preview. It comes out as an off-white color. FIlls gaps up to 1″ large. I feel totally in over my head. Dampproofing and Waterproofing for Foundation Walls. I am not sure whether the contractor is an expert on insulation however. Pros: Redesigned nozzle improves the reuse value of this insulating foam for up to 30 days after opening. If you choose rigid foam, make sure to pay attention to air sealing details before insulating. Pros: Minimally expanding and low pressure, making it suitable for use on windows and doors without obstructing their normal operation. In general, it's better to insulate basement walls (or crawl space walls) rather than to insulate between the floor joists. There is a big hole between the crawl space and the basement for access to the crawl space. Cons: Nozzle can be somewhat leaky. Cons: Additional measures may be needed if dealing with rodents. This product fills gaps up to 1″ wide. Cons: It’s still possible for leaks to occur and for the nozzle to dry out. If you’ve identified the problem areas and you have your gloves, mask and eyewear ready to go, then read on for our picks for the best foam sealants on Amazon. If you want/need even higher-R you can add to that with an interior studwall snugged right up against the cc foam (and you might want to frame that wall before you spay, using the 2" space between the studs & concrete as the depth gauge for the foam installer), using unfaced rock wool or unfaced fiberglass batts. I went to the hardware store for steel wool and caulk but the guy working there insisted that this "Great Stuff Pestblock" foam was what I needed.