Create a username and password below and an account will be created and your post entered. Rigid foam insulation, whether it is expanded or extruded polystyrene, does have to be covered if it is installed in the interior of a building. plywood has an R-value … It is also used as an insulation component in energy-efficient building systems, such as the Advantage ICF System®, an insulating concrete forming (ICF) system, and as a structural insulating panel (SIP) system. More effective insulation With R-values ranging from 3.6 to 8.0, rigid foam sheathing has much better insulation per inch than other materials (i.e. I wondered the same about the sag problem with the fasteners but have not heard any first or even second hand stories about that. Rigid-foam insulation packs a lot of R-value into a relatively thin package. Because ISO starts as liquid foam and has to be sprayed against a substrate to form a rigid panel, all ISO panels are faced. x 48 in. Because applying these products as sheathing creates an exterior vapor barrier, they never should be used with an interior vapor barrier. The idea makes sense, if it’s done correctly. More permeable ISO panels are faced with fiberglass and can be used without creating a vapor barrier. If you are concerned about the environmental impact of the building materials that you use, remember that the blowing agent used to make XPS has a very high global warming potential. 3 Benefits of Rigid Foam Sheathing. • The material attributes a distinctive silver-gray color to high-purity graphite contained within the polymer matrix of the rigid foam… Rigid foam insulation is usually a qualified vapor barrier. Find Foam Board Insulation at lowest price guarantee. This provides a combined R21 value which satisfied the building inspector. More time-consuming installation than spray foam … The three most common varieties of rigid foam are expanded polystyrene (EPS), extruded polystyrene (XPS) and polyisocyanurate (ISO). They act like a moment connection, bending but not tearing out the sheathing. I was going to double up the polyiso board for a total of eight inches. Some rigid foam panels (like SilverGlo™, for example) include a radiant barrier for additional energy savings. Our building department required R20 for all exterior walls - however with 2x4 studs this would have been impossible without the polyiso insulation. Foam is cute but not an effective use of money compared to rigid fiberglass or rockwool. EPS has the lowest average R-value of the three most common types of rigid-foam insulation, around R-4 per inch. South East Alaska has a particular problem with not only high amounts of rainfall almost year round, but also winds driving it sideways allowing it to penetrate siding on a regular basis. I guess I disagree with one part of Jeff's claim, and that is about the testing conditions dealing with solid moisture rather than liquid as in the PNW. Your vapor barrier should be with your collection of housewrap, and rigid foam in this wall construction. R-5 1-in x 4-ft x 10-ft SilveRboard acoustic Faced Polystyrene Foam Board Insulation with Sound Barrier. The … You need an account to post a reply. SilveRboard: Reflective & Under Slab EPS Insulation | Amvic Click here to login, The ability to reply to and create new discussions, Access to members-only giveaways & competitions, Interact with VIP industry experts in our guest Q&As, Access to members-only sub forum discussions, Get INSTANT ACCESS to the world's best private pro audio, Promote your eBay auctions and Reverb.com listings for free. I'm finishing up a 1200 sq/ft addition and energy efficency was at the top of the list. Those and PUR insulations are thermally extremely efficient. This construction also isolates the interior wall from the thermal conduction through the studs, effectively increasing the overall wall R value. SilveRboard R-5 1.125-in x 4-ft x 22-ft SilveRboard graphite Faced Polystyrene Garage Door Foam Board Insulation Item # 2589417 Model # SBGXS1125KIT SilveRboard graphite XS is a high performance, non-structural, rigid … SilveRboard Rigid Foam Insulation is a high performance flat-sheet insulation material made from Expanded Polystyrene (EPS) which is coated with a layer reflective lamination on both sides. XPS comes unfaced or with a number of different plastic facings. ISO panels are the most expensive of the three and has the highest nominal R-value, R-5.7 to R-6. I hope this is the right place to ask this question. lands. As for the connector sag issue, code and science say to upgrade the nail size and quantity. Some builders working in cold climates give it an R-value of 4.5 or 5 per inch. Model #SB12AKIT. For transition was going to use rigid foam between rafters, over top of the wall and sealed to the Silverboard… • GPS is a unique material used, in its final form, as ‘rigid thermal insulation’ in the construction industry. The neat thing about this is the larger nails withstand the lateral stresses better especially when separated from the studs. Some insulation manufacturers have been sending their sales people around pimping this system based on a study in Alaska where they used 5" of hardboard on the outside of the studs and in an area where most of the precipitation falls in solid rather than liquid form. 5mm (0.2") closed cell polyethylene foam covered on both sides with reflective reinforced foil facing. according to Ricks article no faced insulation was used on the inside. The science I read suggests that this is close to optimal construction for our marine climate. The less obvious, but possibly more important benefit in our climate, is that code then allows us to omit the interior vapor barrier between the sheet rock and the stud wall. The REMOTE walls have been tested in this harsh environment and have been reported to perform very well. Pink and blue rigid foam insulation boards are made from polystyrene resin that is melted and then forced through a die to form it into the desired shape. © 2021 The Taunton Press, Inc. All rights reserved. Choosing the Right Thickness of Exterior Foam – Rigid foam must be thick enough to prevent condensation on the roof sheathing. the NCR is 0.19. any thoughts? So at 5" of XPS, that would put you at R25 (and I think you get the extra 1 point from the sheathing/siding- or maybe 25 is just close enough?). I have Foil-faced ISO panels on the 2 exterior facing walls in a "room" in my basement. My plan was to rip one inch strips of wood to put on the back of the roof decking then cut the polyiso board to fit in between the rafters leaving one inch gap for ventilation as well as a 1/4 inch gap on either side to seal after installation. However, an installation between the studs can pose a challenge. Prodex Total 5M Plus - R17. R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)-SB12AKIT - The Home Depot I didnt see this product around this forum so wondering about it. And even though some manufacturers call it rigid foam … R5 Radiant Acoustic Insulation Kit - STC 19 (5-Piece)-SB12AKIT - The Home Depot, Already have an account? Learn if you’re applying exterior rigid foam correctly. Roll Sizes . Get home building tips, offers, and expert advice in your inbox. Also, remember there are other options for continuous exterior insulation, including mineral wool and fiberboard insulation, neither one of which is comprised of petrochemicals. 4-ft x 8-ft Silverboard Graphite Exterior Sheathing Insulation R3 0.625-in x 48-in x 96-in SBGXS type1 R3 SilveRboard graphite radiant sheathing SilveRboard graphite radiant sheathing meets not only the … 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. SilveRboard Graphite is a Graphite impregnated grey EPS board that is low density but high R value -R4.5per inch SilveRboard … Interior sheathing was 1/2" G1S fir ply. However they have little, let's just call it NO acoustic absorption and very little blocking effect. An Irish manufacturer offers a fourth and more recently developed type, phenolic foam. I have 2x10 rafters. Divide your temperature difference by your Rs and plot where 32 deg. And the waste polystyrene is also can be recycled to produce the xps or eps board. for pricing and … – Whether it’s to meet code or to adhere to a “green” target, more and more builders are adding a layer of rigid foam insulation on the outside of homes. and they both said to still use the faced side to the inside instead od using unfaced. … Some builders avoid using any type of foam on foundation exteriors because of the risk that tunneling insects like carpenter ants and termites will bore through it or nest in it. I have at my disposal four inch polyiso board with the foil facing. I just want to know how or what I can use to cover the panels with. I used R14 Roxul rockwool batting between the 2x4 studs and a 1 inch foil faced polyiso board on the interior surface. It is only 2mil thick and I don't see how it works, time will tell. The obvious upside is the thermal insulation gain. SilveRboard Rigid Foam Insulation (EPS) offers builders a higher performance product which increases job-site efficiency and reduces labor costs. Used in this way, the foam lowers … x 1 in. An Alternative to Foam: Mineral wool / Rock wool rigid insulation panels: The only rigid board insulation that is not a petroleum-based foam product shown in the main photo above is the … After reading Rick Arnold's article about ios panels, which I used, I checked with a couple of insulation mafg. I have a question. EPS insulation is used in the construction of buildings to insulate roofs, walls, floors or foundations. This is the basic solution, but can be improved as necessary on harsh climates using grater density and thickness. You can always build and spend more, but this feels like a much smarter way to build here. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Ordering OC703 (cheaper and better than 705) will make a ton of difference. Definitions . They come in 2'x4' sheets; … Though the rigid foam is the chief insulator, the foil adds a bit more energy savings by reflecting heat back into the crawl space. Do a google search for the Portland Oregon testing and approval for this wall system. our company INTCO has several machines to recycle waste polystyrene. Item #2544466. SilveRboard 24 in. For a 2x6 wall with R21 to function you would have to achieve R42 with the foam (pretty much impractical). So you get a better-sheathed wall that is also better at insulating and you can control your weather and air barriers. The purpose of the vapor barrier on the inside of the insulation is to keep water vapor from inside the living space from traveling through the sheet rock and condensing inside the insulation in the wall cavity when it gets close enough to the outside wall for the temperature to reach the dew point. Have cathedral ceiling so was going to add rigid foam to inside rather than removing roof (it is only 2 x 6). Foil-faced ISO panels are considered vapor impermeable. Its too late to save Royread, but for anyone else considering installation of hardboard insulation on the outside of the studs, plese read on. Six Proven Ways to Build Energy-Smart Walls, http://www.intcorecycling.com/GREENMAX-EPS-Styrofoam-Recycling-Machines.html, Energy-efficient framing practices for hurricane and tornado country, 2012 IRC Codifies Window and Door Pan Flashings, SawStop's Portable Tablesaw is Bigger and Better Than Before, The Cornerstones of Comfort: How To Choose the Right Windows and Doors for Your Climate, The Blower Door: Why Isn't It Called the Sucker Door? The basic types of foam board insulation include: polystyrene, polyurethane or polyisocyanurate. We just wrapped a new house here in Portland, OR, with 1" of unfaced xps. SilveRboard Rigid Foam Insulation is a high performance flat-sheet insulation material made from Expanded Polystyrene (EPS) which is coated with a layer of BASF reflective lamination on both sides. "I have learned so much thanks to the searchable articles on the FHB website. Only time will tell if the properly constructed walls continue to function, but I guarantee the "painful redux" will be seen from the improperly applied theory. Better than the foil tape. I am an architect, using EPS encased in concrete to build exterior walls and roof for buildings, the walls firmly attached to the concrete foundation, which creates a monolithic structure capable of resisting natural disasters. The 10-in. Then to add further insult to injury, your contractors liability insurance company will probably refuse to cover the damage based on this configuration constituting a sort of home made EIFS system which is excluded from coverage on virtually all contractor liability policies in the Pacifice NW. Start your subscription today and save up to 52%. The foil, too, acts as a vapor barrier. I can confidently say that I expect to be a life-long subscriber." When you buy products through links across our site, we may earn an affiliate commission. Here is our website: http://www.intcorecycling.com/GREENMAX-EPS-Styrofoam-Recycling-Machines.html. Not thinking sheet rock but some inexpensive paneling perhaps? If you plan on placing it in contact with the ground, make sure it’s rated for that use. The xps, Tyvek, plywood, 2x6 stud wall with batts, and drywall and latex paint, is built to breath inwards and outwards. Crawl Space Ventilation . Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Get the Right Rigid Foam – Foam-board insulation can boost R-value, slow thermal bridging, and control condensation—but you better choose the right type. Thicker, faced XPS is stronger and can have a lower perm rating, but it is still considered a vapor retarder, not a vapor barrier. Just don't know if that's okay to do over those panels. Find a Dealer About SilveRboard Graphite Rigid Foam Insulation High performing and cost effective non-structural rigid insulation board for exterior wall applications on wood or steel frame construction. More information, free (videos, answers to questions) upon request by email: [email protected], Good article！EPS and XPS are all produced by polystyrene, polystyrene can be applied to many products. Is pentane, which has a very low global warming potential has for one pound density an value! Earn an affiliate commission the Right Thickness of exterior foam sheathing of unfaced xps foil, too, acts a. Was that breathable vapor barrier at the top of the list … rigid foam insulation is usually qualified... To insulate roofs, walls, floors or foundations effectively increasing the overall wall value! 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