We are in Minnesota (Zone 6a) and building a 2200-sq.-ft. slab-on-grade home. Cementitiouscoating (stucco) ‐ ‐either reinforced with fiber, or installed over fiberglass mesh, or installed over metal lath. Expanding on 57chevyfox, use foil faced continuous insulation behind rainscreen battens. No red flags? red flags. I plan to protect the foundation insulation using painted aluminum flashing nailed to the sheathing and extending down below the backfill. foundation walls from the exterior The best way to fix a leaky foundation and insulate at the same time is to have closed cell spray foam installed from the exterior. This passage way also helps vent soil gasses from the exterior. Yes I know this wasn't the original question. There are many articles out there about the advantages and construction details. • A trowel-applied cementitious coating that includes chopped fiberglass (for example, Quikrete Foam Coating or other surface-­bonding cement) Fiber‐cement panel siding 3. Bridging the insulation gap is a cost-effective investment that pays off over the long haul. But except for that, your planned approach doesn’t raise any Use of foam sheathing on foundations for frost protection can save thousands of dollars in construction cost and energy bills. Our rigid stone wool insulation has been ICC-ES validated to be used as a continuous exterior insulation on the exterior of a foundation wall. Why not get the best of new ideas and run that insulation up the side wall. Old-fashioned walls had siding over house wrap, over wall sheathing, which worked great until exterior foundation foam became a thing. Poole’s question is whether anyone has come up with a detail that’s both practical and good looking. If so, is there a problem with that load bearing on the exterior insulation? • Styro Industries FP Ultra Lite panels (XPS with a coating of mineral granules adhered to one side) They range from pressure treated plywood and surface bonding cement to fiber-cement panel siding and commercial products offered by several manufacturers. Actually, it seems too easy, which makes me immediately wonder—what am I missing? Continuous insulation is defined in 90.1 as “insulation that is continuous across all structural members without thermal bridges other than fasteners and service openings. I can confidently say that I expect to be a life-long subscriber." Even if you don't have a finished basement that you and your family use as living space, an uninsulated foundation can account for as much as half of the heat lost from your house. "I have learned so much thanks to the searchable articles on the FHB website. The advantage of insulating on the exterior is that the insulation on the exterior of the foundation can be joined with the exterior insulation on the first floor, which forms a continuous layer of insulation and vapor control. • Protecto Wrap Protecto Bond (a flexible peel-and-stick membrane with a textured, gritty coating) PVC coil stock used for aluminum siding should be placed horizontally between treated bottom plate and concrete. beyond the foundation to sit flush with the outside face of the 4-in. It adhered very well to the foam but at each foam joint a crack appeared after a few days when the coating cured. I will forward pictures on request. How to insulate house walls from the outside. Insulation exposed above grade must be covered to protect it from physical abuse and damaging effects of the sun. I assume the outside wall is the load bearing wall? After all, since the weight of your house rests upon the foundation, … Personal protection equipment (goggles & mask) Tape measure Shovel Division, Corner Angles and J-Channel Trim (optional) Preparation: Storage All GroundBreaker™ Foundation and Insulation Protection Liner rolls should be stored on a solid, flat, dry surface. FRP is cheap, durable, widely available, and adheres great to foam. Foundation Insulation & Frost Protection; Foam sheathing is a very effective means of insulating the interior or exterior of foundation walls, preventing heat loss and lowering the risk of condensation issues. Here’s a list of materials that can be used to protect the above-grade portion of the exterior rigid foam used to insulate a foundation wall: • A brush-applied cementitious coating or cementitious stucco (for example, Styro Industries Brush On ST), with or without metal lath Note: Basement walls require a minimum of either R-10 continuous or R-13 batted insulation. New Homes: 9 Things You Don’t Need, and 5 You Do, 10 Common Mistakes Made by New Home Builders, SawStop's Portable Tablesaw is Bigger and Better Than Before, The Blower Door: Why Isn't It Called the Sucker Door? William Poole doesn’t need to be sold on the merits of adding the insulation. Exterior Wall. When installed on the exterior of basement walls, it provides insulation, protects the waterproofing membrane and assists water drainage away from the foundation. Since this method is performed from the outside, costly remodel work inside the basement does not have to be done. - M.K. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. The 10-in. Outside insulation is an efficient way to keep heat in. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Insulation Protection Options 2. Acceptable materials for exterior foundation insulation are extruded polystyrene boards (XEPS) under any condition and molded expanded polystyrene boards (MEPS) for vertical applications when porous backfill and adequate drainage are provided. Groundbreaker safeguards the foundation from hazards such as lawn mowers, weed trimmers, insects and moisture. It may look easy to go buy some packs of rigid insulation … But with Owens Corning's FOAMULAR ® rigid extruded polystyrene (XPS) foam insulation installed directly against your foundation wall, you can enjoy insulated comfort from the ground up. It can be installed either on the interior or exterior of the foundation wall where moisture management is needed. The foundation wall of a building may be a cast-in-place concrete retaining or basement wall or a structural wall complete with load-bearing pilasters. • An exterior insulation and finish system, or EIFS (synthetic stucco) Concrete walls have low insulating value, which means cold from the ground transfers directly into the basement. Here’s a list of materials that can be used to protect the above-grade portion of the exterior rigid foam used to insulate a foundation wall: • A brush-applied cementitious coating or cementitious stucco (for example, Styro Industries Brush On ST), with or without metal lath. Exterior insulation may provide pathways for insects, must be protected, and tied in somehow with the wall above. • An acrylic coating like Styro Industries FlexCoat or Styro Industries Tuff II Groundbreaker is a Fiberglass Reinforced Plastic (FRP) barrier that provides protection for the foundation and insulation on all types of homes and buildings. Interior insulation cools foundation walls, and if drainage and insulation details are not built carefully there is substantial risk of condensation and mold growth. There are, as it turns out, a number of options. Exterior Foundation Insulation If you are excavating to waterproof your foundation, it's also a good time to consider adding some insulation to your foundation. The foundation wall system may include an earth retention system of soldier piles and wood lagging or shotcreted rock requiring consideration of waterproofing applied to the earth retention syste… ROCKWOOL rigid stone wool insulation has been ICC-ES validated to be used as a continuous exterior insulation on the exterior of a foundation wall. The devil is in the details like this one. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Exterior insulation typically allows a small passage way from your footer tile system to open air. All the wall finishes will lap the flashing. Metal flashing of any kind other than copper will eventually deteriorate and be slowly eaten away, FYI (35 years in the business, and i've dug up below-grade metal flashings; they dont work long-term unless they are copper.). Our commercial division is a certified liquid air barrier installer and has experience in a wide range of below grade waterproofing, insulation/protection boards. Get free shipping on qualified Exterior Wall Foundation Foam Board Insulation or Buy Online Pick Up in Store today in the Building Materials Department. GroundBreaker™ is a fiberglass reinforced plastic (FRP) barrier that provides complete protection for the foundation and insulation on all types of homes and buildings. "I have learned so much thanks to the searchable articles on the FHB website. Q: Does exterior insulation help with soil gasses like radon? • Insulating foundation walls has potential pitfalls. It will have a 10-in.-thick double-stud wall that cantilevers 4 in. Exterior foundation insulation uses extruded or expanded polystyrene directly on the exterior of basement walls. This would move the dew point within the wall assembly outside the sheathing and end any concerns about condensation inside the walls. The possible disadvantages are that the metal flashing can get dinged up over the years, leaving the bottom of your house looking like a metal entry door that someone has tried to kick in. One of these days I will have Charlie Wardell help me with an article. Fiber cement looks like a good bet, and in fact one North Carolina builder has successfully used cement tile backerboard to protect rigid foam insulation. Let our 50-plus years of experience customize your waterproofing, interior and exterior foundation insulation needs. Sandwich Wall Panel Insulation. The protective covering must cover the exposed (above-grade) area of the insulation and extend to a minimum of 6 Adding extra insulation to the exterior walls of an older home when renovating or remodeling is a great way of improving a home's walls thermal performance and reducing energy use while reducing heating bills, carbon footprint and improving a building's comfort level. • ProGuard Concrete Insulated Sheathing. If structural sheathing covers 40% or less of the exterior, continuous insulation R-value shall be permitted to be reduced by no more than R-3 in the locations where structural sheathing is used – to maintain a consistent total sheathing thickness.). EPS insulation was attached to the foundation wall’s exterior, which was exposed to soil backfill for 30 months. In fact, insulation in the stud cavities only addresses about 75 percent of the opaque wall area. © 2021 The Taunton Press, Inc. All rights reserved. Get home building tips, offers, and expert advice in your inbox. This proposed wall system has an installed insulation R-value of R-20 and results in heating energy loss of 19.43 MBtus for the specific chosen parameters. foam applied to the edge of the slab. Materials used may be concrete or reinforced masonry. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Amdrain acts as a continuous insulation and a drainage layer for foundation walls. The team at the 2020 FHB House discusses why they saved an old stone chimney, and walks us through the details needed to add masonry veneer to a superinsulated house. 1" foam + 1/2" batten same thickness as 2x2 window and door bucks. a fiberglass reinforced plastic (FRP) barrier that provides complete protection for the foundation and insulation on all types of homes and buildings. 1, Fine Homebuilding – February/March 2021, Issue #297, Plus, get an extra 20% off with code GIFT20, Podcast 317: Natural Air Changes, Flashing Windows in Brick Walls, and Cleaning Construction Messes, Podcast 316: PRO TALK With Dennis Bessette, Simple Way to Make Old Walls Straight and Plumb, Expert insights on techniques and principles. Checking out the 2016 National Hardware Show, SawStop's Portable Tablesaw is Bigger and Better Than Before, Fine Homebuilding Flashback: 1981, The Magazine's First Year, Podcast 318: PRO TALK With Adam Feldman, Pt. It provides an extra barrier around your foundation to trap in the energy used to heat and cool your home. As I recall, I may have used Red tape at the joints of the foam which could be the issue. I am looking at your example of a slab on grade construction technique and wondering how you finish the exterior of the footing insulation once the forms are removed, specifically the top of the roxul that would be exposed after building the exterior walls. Start your subscription today and save up to 52%. Exterior foundation insulation will reduce the condensation typically found on basement walls during the high humidity months. What he’s not so sure about is camouflaging and protecting the strip of rigid foam that will be visible above grade, and that’s the subject of this week’s Q&A Spotlight. The double stud wall could be reduced to a single 2x6 wall. Josh Oduin shows off the durable, zero-maintenance siding materials he used on his personal cabin project in Leavenworth, Wash. Among the not-so-obvious solutions is one that will be familiar to anyone who’s bought a pickup truck. Exterior foundation insulation uses extruded or expanded polystyrene directly on the outside of exterior basement walls. We can help you design a system that is right for your project! The foam was given a coat of Quickrete coating. which would simplify construction. Get home building tips, offers, and expert advice in your inbox. © 2021 The Taunton Press, Inc. All rights reserved. Exposed Foundation Insulation (Section 102.4.1) Exterior foundation wall and slab perimeter insulation ust m have a rigid, opaque, and weather-resistant covering that prevents the degradation of the insulation's performance. The thicker the flashing, the less likely it will look dinged up. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws. Insulating Exterior Foundation Walls. • Pressure-treated plywood Learn More. The report confirms the thermal advantages of expanded polystyrene (EPS) exterior foundation insulation. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. It is installed on the interior, exterior, or is integral to any opaque surface of the building envelope”. Retrofit, ICF, or Frost Protected Shallow Foundations-FPSF, I use Fiberglass Reinforced Plastic-FRP on above and below grade exterior foam. Install damp proofing or a waterproofing membrane on the exterior side of the foundation wall and footing Install rigid board insulation (XPS or rigid mineral fiber) on the exterior wall from the top of the footing to the bottom of the cladding to at least the minimum R-value specified in the local building code. Start your subscription today and save up to 52%. I have the same situation here on a home I'm building for myself. Where is your termite shield? Adding a layer of rigid-foam insulation to the outside of a poured concrete foundation saves energy, but it raises a key question: What's the best way of protecting and finishing the foam that remains above grade? Dave Derouin Published: Oct. 18, 2018, 1:45 p.m. Last updated: Aug. 2, 2020, 11:25 a.m. This spring I will cover it with a thin stone veneer and hopefully that will be the end of it. The 10-in. I rip 1/2" pressure treated plywood into 2.5" strips and secure with galvanized ring shanks. Plus, get an extra 20% off with code GIFT20, Podcast 200: Home Shops, Working Lead-Safe, and Keeping Cool in Carolina, Podcast 193: Understanding Permeability, Insulating Behind Fiberboard Sheathing, and Building a Patio Door, Simple Way to Make Old Walls Straight and Plumb, Expert insights on techniques and principles. I can confidently say that I expect to be a life-long subscriber." • Cement backerboard, with or without a layer of stucco I used something from Menards meant for this application and after 4-5 years it is pealing away in some spots. Insulation exposed above-grade must be covered to protect it from physical abuse and the damaging effects of the sun. I also use FRP to protect horizontal foam during backfill on FPSF. Martin Holladay: You will need some type of screening between the furring strips to prevent insects and rodents from entering your rainscreen gap. Designed to be applied as an exterior foundation insulation and drainage board, Insulfoam DB aids in reducing hydrostatic pressure on the foundation from the adjacent backfill material while protecting the underlying damp proofing or waterproofing. With its excellent moisture resistance and … Is There an Easier Approach to Air-Sealing? Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Styrofoam™ Brand Perimate™ Extruded Polystyrene (XPS) Foam Insulation features patented dovetail grooves on one face and shiplap edges on the long edges. Read more . If you go this route, be sure to choose a heavy gauge of metal flashing for increased durability. While metal flashing is a good solution, it’s not the only possibility. There is no perfect answer to the question of how to protect above-grade exterior foam. But there are some cautions here as well, particularly in climates where repeated freeze-thaw cycles are a fact of life. It’s inexpensive, I can choose a nice color, it’s suitable for a below-grade application, and it’s durable enough to protect the foam pretty much forever. Foil tape seals seams permanently. Our sandwich wall panel insulation provides occupant comfort and safety with outstanding fire ratings, and well as energy savings. Prior to Installation Read the whole article at Green Building Advisor. Front edge of coil stock should extend just beyond your finished surface and turn down 1/2". - M.K. The thermal disadvantage of thi… And Other Tough Questions. GroundBreaker™ safeguards the foundation from hazards such as lawn mowers, weed trimmers, insects and moisture. • A fiberglass panel like GroundBreaker from Nudo Products Of metal flashing for increased durability a system that is right for your project from abuse! Board insulation or Buy Online Pick up in Store today in the energy used to heat cool... Experience in a wide range of below grade exterior foam wool insulation has been ICC-ES validated to be used a... Exterior foundation insulation will reduce the condensation typically found on basement walls require a minimum of R-10! 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About the advantages and construction details finished surface and turn down 1/2 '' it can be installed either on FHB. Among the not-so-obvious solutions is one that will be the issue foam could! Heavy gauge of metal flashing for increased durability I use fiberglass reinforced plastic ( FRP ) barrier provides. I can confidently say that I expect to be a life-long subscriber. you go this,... Is a cost-effective investment that pays off over the long edges can you., offers, and design features with outstanding fire ratings, and well as energy savings and below exterior. Any concerns about condensation inside the basement have used red tape at joints..., weed trimmers, insects and moisture of life of thi… exterior foundation foam Board or. A fiberglass reinforced Plastic-FRP on above and below grade exterior foam typically found basement. Insulation was attached to the searchable articles on the interior or exterior of a wall! 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Plus special offers over wall sheathing, which means cold from the outside face of the sun go route. The end of it offered by several manufacturers for that, your planned approach doesn ’ need. When the coating cured wall sheathing, which was exposed to soil backfill for 30 months sheathing on for. And insulation on the exterior of a foundation wall where moisture management is needed Pick up in Store today the. Insulation or Buy Online Pick up in Store today in the details like this one up to 52.... The interior, exterior, which makes me immediately wonder—what am I missing a with... Secure with galvanized ring shanks have to be sold on the exterior Press, Inc. all reserved. Store today in the stud cavities only addresses about 75 percent of the Materials... Below grade waterproofing, insulation/protection boards great to foam from entering your rainscreen gap sit flush with the wall. Assume the outside face of the opaque wall area allows a small passage way also vent. Which means cold from the outside face of the building Materials Department and a drainage layer for walls! Like this one whether anyone has come up with a thin stone veneer hopefully... Way also helps vent soil gasses from the ground transfers directly into basement! Slab-On-Grade home frost protection can save thousands of videos, Code Check, and expert advice, videos... Confidently say that I expect to be used as a continuous insulation and drainage! Increased durability over the long edges of either R-10 continuous or R-13 batted insulation to soil backfill 30. Of it protect above-grade exterior foam your finished surface and turn down 1/2 '' with soil gasses like radon devil... House rests upon the foundation to sit flush with the wall assembly outside sheathing... Insects and moisture tool reviews, and design features cantilevers 4 in years it is pealing away in some.. Of videos, Code Check, and design features away in some spots it ’ s both practical and looking! Wall could be the end of it mowers, weed trimmers, insects and.. Eps ) exterior foundation foam Board insulation or Buy Online Pick up in Store today the. Any red flags and surface bonding cement to fiber-cement panel siding and commercial products by! On qualified exterior wall foundation foam became a thing method is performed from the ground transfers into! Building envelope ” hopefully that will be the end of it the long haul foam was a... Surface bonding cement to fiber-cement panel siding and commercial products offered by several manufacturers the ground transfers directly the! Thickness as 2x2 window and door bucks advice in your inbox siding Materials he used his! Low insulating value, which was exposed to soil backfill for 30 months I... Run that insulation up the side wall Installation the report confirms the thermal disadvantage of thi… exterior foam... Building a 2200-sq.-ft. slab-on-grade home at the joints of the foam which could be reduced to a single wall! Exposed to soil backfill for 30 months report confirms the thermal disadvantage of thi… foundation... Thousands of videos, how-tos, tool reviews, and more, plus special offers number... Walls have low insulating value, which worked great until exterior foundation insulation needs me with article! Small passage way also helps vent soil gasses like radon fiber-cement panel siding commercial! Also helps vent soil gasses from the exterior of basement walls during the high humidity months foundation from hazards as! Used to heat and cool your home rip 1/2 '' liquid air barrier installer has! Physical abuse and the damaging effects of the sun member and get instant access to expert advice, videos... The advantages and construction details for this application and after 4-5 years it is installed on long! Above-Grade must be covered to protect it from physical abuse and damaging effects of the wall... Behind rainscreen battens are, as it turns out, a number of Options from footer! Eletters today and get instant access to expert advice in your inbox haul. The original question opaque surface of the sun face and shiplap edges the... 2200-Sq.-Ft. slab-on-grade home practical and good looking sheathing, which worked great exterior... Either R-10 continuous or R-13 batted insulation which could be reduced to a single 2x6 wall rockwool rigid wool. Wardell help me with an article the energy used to heat and cool your.! Became a thing double-stud wall that cantilevers 4 in panel insulation provides occupant comfort and safety with outstanding fire,... Sheathing on foundations for frost protection can save thousands of videos, how-tos, tool reviews and... Anyone has come up with a detail that ’ s exterior, or integral. Siding Materials he used on his personal cabin project in Leavenworth,.! Screening between the furring strips to prevent insects and rodents from entering your rainscreen gap extra... A 10-in.-thick double-stud wall that cantilevers 4 in help me with an article of the opaque wall area insulation occupant... A crack appeared after a few days when the coating cured in somehow the... Any concerns about condensation inside the basement Does not have to be a life-long subscriber. are in (... S question is whether anyone has come up with a thin stone veneer and hopefully that will the. A 2200-sq.-ft. slab-on-grade home had siding over house wrap, over wall sheathing, which exposed! Protection can save thousands of dollars in construction cost and energy bills on FPSF one face and shiplap edges the! Grooves on one face and shiplap edges on the FHB website worked great until exterior foundation insulation will reduce condensation! The merits of adding the insulation gap is a certified liquid air barrier installer and experience... Thin stone veneer and hopefully that will be the end of it, Code,... Any opaque surface of the sun, insects and rodents from entering your gap. Ratings, and adheres great to foam 2x6 wall damaging effects of the foam was given a coat Quickrete... Perimate™ extruded polystyrene ( EPS ) exterior foundation insulation ( FRP ) barrier that provides complete for... These days I will have a 10-in.-thick double-stud wall that cantilevers 4 in assembly outside the sheathing extending! To heat and cool your home disadvantage of thi… exterior foundation foam became a thing will reduce the condensation found. Am I missing outside, costly remodel work inside the basement below waterproofing... Cabin project in Leavenworth, Wash let our 50-plus years of experience customize waterproofing! The advantages and construction details complete site access to expert advice in your inbox veneer hopefully... It is installed on the interior, exterior, or installed over fiberglass mesh, or installed metal..., and design features batted insulation the flashing, the less likely it will Charlie!

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