What Is Polyiso Insulation?. com>Polystyrene Board Insulation at Lowes. Extruded polystyrene foam (XPS) also known as blue board or pink board comes in many different thicknesses and edge profiles. Monolithic slabs Monolithic, or thickened-edge, slabs can only be insulated on the exterior. 5-in x 4-ft x 8-ft Faced Polystyrene For Use In Garage Doors Board. Custom lengths are available up to 30. Illinois>State of Illinois. 7, 2-in x 4-ft x 8-ft Faced Polystyrene For Use In Garage Doors Board Insulation. 5 R-value for every inch. Its reasonably priced, light weight and easy to use. Apply for a Home Depot Consumer Card Interested in purchasing a pallet? Buy 24 Lightweight, easy to use. Foam Board Insulation R ValueFOAMULAR XPS resists moisture and retains R-value even after exposure to standing water and wet soil. 7 to 10 or more, depending on the product. XPS has an R value of 4. Foam board insulation materials cost between $2,000 and $8,000. 5-in x 4-ft x 8-ft Faced Polystyrene For Use In Garage Doors Board Insulation Model # 1/2X48X96 R-TECH Find My Store for pricing and availability 339 1-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation Model # 451156 Find My Store for pricing and availability 320 0. R38 to R49. Why R-value is Important for Foam Board Insulation What are R-values? R-values measure how well a 2-dimensional barrier can resist conductive heat flow. Foam Board / Sheathing Insulation. The higher the R-Value the better the thermal performance of the insulation. Usually, rigid foam board insulation is sold in sheets about 4 feet by 8 feet in size. 75-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation. Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. This is an insulation material with the highest R-value altogether. Continuous Insulation Makes a. However, these numbers may vary according to the variation of the original product being used. R means resistance to heat flow. All of these materials are produced using recycled waste materials. The higher the R-Value the better the thermal performance of the insulation. 25 (for high-density foam), is that it allows you to pack a lot of insulating power into a small space to create a well-insulated wall. It is wrapped in construction paper to prevent damage. For example, after just 5 years, an XPS board will see its R-value fall by 10%, and even more going forward. Foam Board Insulation at Lowes. EnergyGuard™ NH Ultra Polyiso Insulation provides the highest R-value per inch. 5-in x 4-ft x 8-ft Faced Polystyrene For Use In Garage Doors Board Insulation Model # 1/2X48X96 R-TECH Find My Store for pricing and availability 339 Insulfoam R-7. Per square foot of R-value, rigid foam board insulation costs about twice as much as fiberglass. Foam-Control EPS Board Insulation : Rigid Board: Polystyrene Foam: Atlas Roofing Corp. Owens Corning® FOAMULAR® 250 (25 psi) R-15 Extruded Polystyrene Foam Board Insulation 3 x 4 x 8 - Square Edge. Compare insulation R-values before you buy. That formula is in imperial units. Notice, the non-thickness dimensions are plus or minus a quarter of an inch. Tiny House Insulation: What I Wish I Knew When I …. Why R-value is Important for Foam Board Insulation What are R-values? R-values measure how well a 2-dimensional barrier can resist conductive heat flow. Polyisocyanurate (Polyiso) Foam Board Photo by @adventurevanfor9 R-Value Per Inch: R-6. An R-value tells you how well a type of insulation can keep heat from leaving or entering your home. The higher the R-value, the greater the insulating power. A higher insulation R-value usually means a higher price point as well. This is the product that I typically use to insulate basement walls. 78 EPS Rigid Foam Board Insulation Insulfoam rigid foam is a high-performance Insulfoam rigid foam is a high-performance built-to-spec sheathing insulation that provides superior R-value and moisture resistance. The R-value depends on the type of insulation, its thickness, and its density. Styrofoam™ Brand Scoreboard. But spray foam has other benefits. 99 Pink Insulation Foam 1/2 Thick (4 sq ft) $10. Polyisocyanurate Insulation Materials Polyisocyanurate or polyiso is a thermosetting type of plastic, closed-cell foam that contains a low-conductivity, hydrochlorofluorocarbon-free gas in its cells. CertainTeed InsulPure R-19 Wall 88. Insulating Colorado Homes. The type of insulation you should choose depends on how you will use it and on your budget. When calculating the R-value of a multilayered installation, add the R-values of the individual layers. There is also less waste with fiberglass insulation. Polystyrene Board Insulation at Lowes. Q: What is the R-value of 2-inch foam board insulation? A: The R-value for 2-inch foam board insulation can range from 7. 99 Pink Insulation Foam 1/2 Thick (4 sq ft) $10. This insulation board is probably one of the most widely used foam board insulation products. In climate zones 4 and 5, building codes require a minimum of R-10 vertical insulation that extends down 2 ft. Polystyrene loose-fill or bead insulation typically has a lower R-value compared to the foam board. 2023 Foam Board Insulation Cost: How Much Is Rigid Foam. If you’re going to spend $10,000 to $14,000 to remove and replace the siding on your home, adding insulation makes financial sense. R-values are expressed in ft²•h•°F/Btu. 5k (207) Questions & Answers (354) Hover Image to Zoom $ 26 63 Pay $1. Polystyrene loose-fill or bead insulation typically has a lower R-value compared to the foam board. Filter Products By Jump To Foam Board, Sheathing. ThermalStar Lci EPS Board Insulation: Rigid Board: Polystyrene Foam: Insulfoam: R-TECH EPS Board Insulation: Rigid Board: Polystyrene Foam: Johns Manville: AP™ Foil-Faced Sheathing: Rigid Board: Polyisocyanurate Foam: Kingspan: GreenGuard® SLX Sheathing. A: The R-value for 2-inch foam board insulation can range from 7. The thickness of these insulation sheets might vary. R-values are expressed in ft²•h•°F/Btu. For a 1,100 square foot area at 3. Johns Manville Polyiso foam sheathing insulation boards provide a continuous layer of insulation to reduce thermal bridging and improve energy efficiency. EPS reduces energy costs and offers the highest R-value per dollar of any foam insulation board. The best-known advantage of spray foam’s high R-value per inch of 6. Open-cell foam is lighter and less expensive but should not be used below ground level where it could absorb water. Extruded polystyrene foam (XPS) also known as blue board or pink board comes in many different thicknesses and edge profiles. 78 EPS Rigid Foam Board Insulation Insulfoam rigid foam is a high-performance Insulfoam rigid foam is a high-performance built-to-spec sheathing insulation that provides superior R-value and moisture resistance. Insulating Your Van: Everything You Need to Know for …. Rigid (Foam Board) Insulation R. Keep on reading if you plan on learning a thing or two about foam board and the R-values of its different forms. 0 Cost for 1 ft2 of R-1: $0. Filter Products By Jump To Foam Board, Sheathing. For example, after just 5 years, an XPS board will see. For instance if you have a material with an R-value of 12 attached to another material with an R-value of 3, then both materials combined have an R-value of 15. The R-value of polystyrene insulation under roads and airfields in cold climates is critical to protect infrastructure from damage caused by frost heave and permafrost thaw. A popular rigid insulation choice, XPS features an initial R-value of R-5 per inch. This item: Pink Insulation Foam 2 Thick, Two Pieces (2. It provides an R-value of 4 per inch of thickness and is the cheapest type of foam board insulation. Since Styrofoam™ Brand Extruded Polystyrene Foam Insulations are visco-elastic materials, adequate design safety factors should be used to prevent long-term. Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. Insulfoam R-1. The table below shows what levels of insulation are cost-effective for different climates and locations in the home. For home improvement purposes, R-values range from about R10 for some flooring materials to R60 for dense attic insulation materials. Fiberglass Insulation: Whats the Difference?>Rigid Foam vs. Polyisocyanurate Insulation Materials Polyisocyanurate or polyiso is a thermosetting type of plastic, closed-cell foam that contains a low-conductivity, hydrochlorofluorocarbon-free gas in its cells. Foam board insulation has around 3. EnergyGuard™ Ultra Polyiso Insulation is made of a coated glass-fiber facer bonded to a core of isocyanurate foam. Homeowners can install some types of insulation -- notably blankets, boards, and materials that can be poured in place. Open-cell spray foam has an R-value of about R-3. Recommended Home Insulation R–Values. Rigid Polyiso Foam Board Insulation: Benefits and R-Value — Rmax As one of the most widely used and readily available building products, Polyiso is a cost-effective insulation option for reducing building energy use and improving the overall service life of roofs and walls. It’s also possible to use rectangles of rigid foam insulation in this location. Insulation R Value Explained – Forbes Home>Insulation R Value Explained – Forbes Home. Owens Corning® FOAMULAR® R. R value is just a measure of how well something insulates from heat transferring. Attic spray foam insulation costs $1,100 to $6,800 on average for the floor and $1,500 to $9,000 for the rafters and roof deck. Q: What is the R-value of 2-inch foam board insulation? A: The R-value for 2-inch foam board insulation can range from 7. It provides an R-value of 4 per inch of thickness and is the cheapest type of foam board insulation. A comparable R-value for rigid foam costs roughly $10. com>Board Insulation at Lowes. Foam Insulation Product Data >Extruded Polystyrene (XPS) Rigid Foam Insulation Product Data. Johns Manville Polyiso foam sheathing insulation boards provide a continuous layer of insulation to reduce thermal bridging and improve energy efficiency. This foam is great for using in crafts. Q: What is the R-value of 2-inch foam board insulation? A: The R-value for 2-inch foam board insulation can range from 7. Wall Insulation - Whenever exterior siding is removed on an: Uninsulated wood-frame wall: Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding, and. Model Number: 798369 Menards ® SKU: 1631305. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. A 1 1/2-inch thick sheet of rigid foam insulation has a R-value of 7. A 1 1/2-inch thick sheet of rigid foam insulation has a R-value of 7. 99 Pink Insulation Foam 1 Thick (3. Rigid foam insulation products can be used on wood, steel framing or concrete. Poly Shield ® is lightweight and easy to install. 99 Product information Warranty & Support Product Warranty: For warranty information about this product, please click here Feedback Would you like to tell us about a lower price?. 5 sq ft) 49 Amazons Choice in Weatherproofing Window Insulation Kits 1 offer from $21. Insulation Type: Polystyrene Show 35 Results Insulation Type: Polystyrene Clear All Insulfoam R-1. Extruded Polystyrene (XPS) Rigid Foam Insulation Product …. 5 Scored Squared Edge Rigid Foam Board Insulation Sheathing (290) Questions & Answers (104) + Hover Image to Zoom $ 35 62 Buy 32 or more $30. But spray foam has other benefits. In simple terms, R-values measure the effectiveness of insulation and a higher number represents more effective insulation. * Styrofoam™Brand Scoreboard Extruded Polystyrene (XPS) Foam Insulation is a former product of The Dow Chemical Company. Fiberglass Insulation: Whats the Difference?. Foam insulation boards are easy to handle, score, cut and install & no special tools are needed. The R-value depends on the type of insulation, its thickness, and its density. Polyiso consists of a uniform closed-cell polyisocyanurate foam core and provides one of the highest R-values per inch of any rigid insulation. Batt insulation: Low R-value per inch; Spray foam insulation: Rigid insulation boards: High R-value per inch; Each type of insulation comes with different pros and cons. The R-value of foam board insulators primarily depends on their types. While closed-cell foam has a greater R-value and provides stronger resistance against moisture and air leakage, the material is also much denser and is more expensive. Insulated Siding Vs Foam Board: Which Is Better?. 00 with fiberglass insulation. In severe cold, XPS panels do see an increase to their R-values. 62 after $25 OFF your total qualifying purchase upon opening a new card. For example, if an attic has 10 inches of fiberglass batt insulation: R-value per inch x Number of inches =Total R-value 3. Owens Corning® FOAMULAR® 250 (25 psi) R-15 Extruded Polystyrene Foam Board Insulation 3 x 4 x 8 - Square Edge. Pink Insulation Foam 2 Thick, Two Pieces (2. Tuff-R™ Polyisocyanurate Insulation consists of high-performance, high R-value, closed-cell polyisocyanurate foam core boards sandwiched between a choice of durable exterior foil facers. Fiberglass Insulation: Whats the …. Foam insulation boards are easy to handle, score, cut and install & no special tools are needed. The higher the R-value, the more the resistance and the. The minimum thickness for closed-cell insulation is 3. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. ThermalStar Lci EPS Board Insulation: Rigid Board: Polystyrene Foam: Insulfoam: R-TECH EPS Board Insulation: Rigid Board: Polystyrene Foam: Johns Manville: AP™ Foil-Faced Sheathing: Rigid Board: Polyisocyanurate Foam: Kingspan: GreenGuard® SLX Sheathing. Extruded Polystyrene Delivers Higher R. Sep 22, 2021. 2Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first. For home improvement purposes, R-values range from about R10 for some flooring materials to R60 for dense attic insulation materials. 2 Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first. You’ll see it referred to as R-30 or R-7 the higher the number, the better job it does. R-5 Scored Square Edge Rigid Foam Board Insulation Sheathing FOAMULAR Extruded Polystyrene (XPS) Rigid FOAMULAR Extruded Polystyrene (XPS) Rigid Foam Insulation offers a comprehensive product line of insulation boards in a wide choice of sizes, thicknesses and edges with a Lifetime Limited Warranty for the life of the home or building. Rigid Foam Board or Fiberglass Insulation: Which to Choose?. The higher the R-value, the lower the heat flow, the better a product at curbing a buildings heat loss and energy use. Per square foot of R-value, rigid foam board insulation costs about twice as much as fiberglass. This lets you compare insulations apples to apples. A popular rigid insulation choice, XPS features an initial R-value of R-5 per inch. This foam is moisture resistant XPS insulation. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. Foam Board Insulation Owens Corning FOAMULAR 150 1-1/2 in. Insulation R-values vary based on the type, thickness and density of the insulation material. Attic spray foam insulation costs $1. R-Value is a measure of insulation’s ability to resist heat traveling through it. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. For example, insulating a 10-square-foot wall area to R-15 costs about $3. It has high compressibility when compared to EPS No thermal drift or loss of heat over time 100% Recyclable Cons It attracts ants & termites It is flammable. Batt insulation: Low R-value per inch; Spray foam insulation: Rigid insulation boards: High R-value per inch; Each type of insulation comes with different pros and cons. The higher the R-value, the lower the heat flow, the better a product at curbing a building’s heat loss and energy use. What Insulation Is Best For Exterior Walls? A good exterior wall R-value is R-23. These values mean that the foam board insulation has higher heat capacity than the insulated siding, which can increase the R-value of the entire wall. 7 EPS Rigid Foam Board Insulation. 5-in x 4-ft x 8-ft Faced Polystyrene For Use In Garage Doors Board Insulation Model # 1/2X48X96 R-TECH Find My Store for pricing and availability 339 1-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation Model # 451156 Find My Store for pricing and availability 320 0. EPS is used under roofing, over foundation walls and beneath siding. Foam-Control EPS Board Insulation : Rigid Board: Polystyrene Foam: Atlas Roofing Corp. Why R-value is Important for Foam Board Insulation What are R-values? R-values measure how well a 2-dimensional barrier can resist conductive heat flow. See actual warranty for complete details, limitations and requirements at www. However, generally speaking, a foam boards R-value is between 3. What is the R-value of foam board insulation? Foam board insulation R-value varies based on type but is anywhere from 3. 11% Mail-In Rebate Good Through 5/7/23. That said, the long term R-values of this foam board decline over time. See full list on attainablehome. Typically, a higher insulation R rating means better climate control and better energy efficiency for your home. What Is Polyiso Insulation?. There are other factors to consider. Available Sizes Standard Thermax ™ insulation board dimensions are 4x8. XPS has an foam board insulation R value of 5; It is cheaper than Polyiso but expensive than EPS;. However, generally speaking, a foam boards R-value is between 3. On Tuff-R™ Insulation, one facer is a continuous sheet of aluminum foil; the other is a durable tri-laminate facerconsisting of aluminum foil, kraft and. Recommended insulation. It’s reasonably priced, light weight and easy to use. The R-value of most insulations also depends on temperature, aging, and moisture accumulation. Foam board insulation cost ranges between $4,000 and $9,000, with an average cost of $6,500. Its coated glass-fiber weave offers better adhesive coverage than paper-faced polyiso, and provides your roof with greater moisture resistance. The cost of closed-cell spray foam insulation is between $0. Insulation Type: Polystyrene Show 35 Results Insulation Type: Polystyrene Clear All Insulfoam R-1. Attic or Ceiling Insulation Insulating an attic will cost between $100 and $1,000 depending on whether the attic already has some insulation or not. In addition to thickness, density and material type are key factors in the R-value of foam board insulation. Typically, rigid foam board insulation has an R-value between 4. Q: What is the R-value of 2-inch foam board insulation? A: The R-value for 2-inch foam board insulation can range from 7. The formula for R-Value is: BTU / hr x ft 2 x °F In this formula BTU stands for British Thermal Units, hr stands for time lapse in hours, ft 2 stands for the exposed area of the sample in square feet and °F stands for change in temperature by degrees Fahrenheit. If you want to install spray foam in a stud wall, and price is no object, then it would seem to make sense to specify closed-cell spray foam, right?. Once cured, this type of spray foam has an R-value of about R-6. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. R-value determined by ASTM C518. Premium Quality The EPS core meets or exceeds ASTM C578 specs, with excellent dimensional stability & compressive strength. For home improvement purposes, R-values range from about R10 for some flooring materials to R60 for dense attic insulation materials. 48 with Mail-In Rebate Edge Style: Square Edge Calculate your needs Qty: SELECT STORE & BUY Increments of 32 may be required Compare Add to Lists. The table below shows what levels of insulation are cost-effective for different climates and locations in the home. A popular rigid insulation choice, XPS features an initial R-value of R-5 per inch. R-Value is a measure of insulation’s ability to resist heat traveling through it. 5″, the average cost for closed-cell insulation is $3,388. The R-value of most insulations also depends on temperature, aging, and moisture accumulation. The R-value for insulation is a way to measure how much resistance the insulation has to heat flow. CertainTeed InsulPure R-19 Wall Kraft Faced Fiberglass Roll Insulation 48. How are R-values Measured?. You’ll see it referred to as R-30 or R-7 the higher the number, the better job it does. • Ideal for projects that require higher R-value and a stable substrate • Provides an economical solution — high insulation value for your dollar • Pre-consumer ranges from 3% – 9% and post-consumer ranges from 10% – 33% depending on thickness. FOAMULAR® XPS Insulation limited lifetime warranty maintains 90% of its R-value for the lifetime of the building and covers all ASTM C578 properties. The maximum thermal performance or R-value of insulation is very dependent on proper installation. Total Recycled Content ranges from 14%–45%. ) One way to insulate the interior side of a rim joist is with spray foam. For example, insulating a 10-square-foot wall area to R-15 costs about $3. It’s the only scenario in which. STYROFOAM Board Insulation at Lowes. (Most two-component spray-foam kits use closed-cell foam. R means resistance to heat flow. R-Panel is manufactured with a closed-cell polyisocyanurate foam core bonded to fiberglass-reinforced facers and designed for use over metal, nailable and non-nailable roof decks with a variety of membrane systems. The thickness of these insulation sheets might vary between 1/4 th of an inch to 2 inches. Usually, rigid foam board insulation is sold in sheets about 4 feet by 8 feet in size. 99 Pink Insulation Foam 2 Thick (2. Certified Insulation Products. 2023 How Much Does Attic Insulation Cost? – HomeGuide. If you choose to use rigid board insulation, you only need 1½” for the R-11 rating and you may only loose about 2” for every wall insulated. DuPont Styrofoam Brand Scoreboard XPS Foam Insulation>DuPont Styrofoam Brand Scoreboard XPS Foam Insulation. That said, the long term R-values of this foam board decline over time. 1 1/2 in x 48 in. If you want to install spray foam in a stud wall, and price is no object, then it would seem to make sense to specify closed-cell spray foam, right? Well, not necessarily. Foam board or insulating boards are rigid panels of insulation that have a high R-value. Typically, a higher insulation R rating means better climate control and better energy efficiency for your home. Compare Similar Foam Board Insulation. The types of foam board insulation include polyurethane, polyisocyanurate, extruded polystyrene foam, and expanded polystyrene foam. R-value determined by ASTM C518 using the aging process in ASTM C1289 (90 days @ 140°F). Insulation Type: Polystyrene Show 35 Results Insulation Type: Polystyrene Clear All Insulfoam R-1. The R-value of foam board insulators primarily depends on their types. Owens Corning® FOAMULAR® 250 (25 psi) R-15 Extruded Polystyrene Foam Board Insulation 3 x 4 x 8 - Square Edge Model Number: 798369 Menards ® SKU: 1631305 Final Price $ 60 52 each You Save $7. FOAMULAR® XPS Insulation limited lifetime warranty maintains 90% of its R-value for the lifetime of the building and covers all ASTM C578 properties. But one thing to consider is how well something insulates per inch of thickness. Insulation R-values vary based on the type, thickness and density of the insulation material. XPS has an foam board insulation R value of 5 It is cheaper than Polyiso but expensive than EPS It is more moisture & mildew resistant than EPS. Rigid Foam R-Value. R value is just a measure of how well something insulates from heat transferring. The higher the R-value, the greater the insulating power. 75-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation. EPS reduces energy costs and offers the highest R-value per dollar of any foam insulation board. Tiny House Insulation: What I Wish I Knew When I Built My. Batt insulation: Low R-value per inch; Spray foam insulation: Rigid insulation boards: High R-value per inch; Each type of insulation comes with different pros and cons. Rigid Polyiso Foam Board Insulation: Benefits and R. The amount of insulation you need depends mainly on the climate you live in. Rigid foam insulation products can be used on wood, steel framing or concrete walls. Per square foot of R-value, rigid foam board insulation costs about twice as much as fiberglass. Owens Corning® FOAMULAR® 250 (25 psi) R-15 Extruded Polystyrene Foam Board Insulation 3 x 4 x 8 - Square Edge Model Number: 798369 Menards ® SKU: 1631305 Final Price $ 60 52 each You Save $7. Johns Manville Polyiso foam sheathing insulation boards provide a continuous layer of insulation to reduce thermal bridging and improve energy efficiency. Rigid foam insulation tends to have a low to moderate R-value per dollar, compared to fiberglass. com/_ylt=AwrJ_xXYjldkTXwzVqRXNyoA;_ylu=Y29sbwNiZjEEcG9zAzIEdnRpZAMEc2VjA3Ny/RV=2/RE=1683488601/RO=10/RU=https%3a%2f%2fwww. A comparable R-value for rigid foam costs roughly $10. Most fiberglass products contain 40% to 60% recycled glass. Once you identify the type of insulation you have in a certain location and measure the depth of that insulation in inches you can figure out the total R-value of that insulation. Insulation level are specified by R-Value. The best-known advantage of spray foam’s high R-value per inch of 6. Cellulose is primarily made from recycled newsprint. In addition to thickness, density and material type are key factors in the R-value of foam board insulation. This item: Pink Insulation Foam 2 Thick, Two Pieces (2. Best for floors, foundation and basement walls, interior and exterior wall sheathing and low-sloped ceilings. 25 (for high-density foam), is that it allows you to pack a lot of insulating power into a small space to create a well-insulated wall. R-value determined by ASTM C518 using the aging process in ASTM C1289 (90 days @ 140°F). Foam Board Insulation R Value Chart and Types. 5″, in a 1,100 square foot area, the price for closed-cell insulation is. In addition to thickness, density and material. A higher insulation R-value usually means a higher price. R-Value is a measure of insulations ability to resist heat traveling through it. The minimum thickness for closed-cell insulation is 3. What is the R-value of foam board insulation? Foam board insulation R-value varies based on. What is R Value? R means resistance to heat flow. Zones 3–4: Add R5 insulative wall sheathing beneath the new siding. Insulation Foam Board Insulation R-Tech 2 in. This product consists of two 15 by 12 by 2 insulation pieces. Foam board insulation has around 3. While closed-cell foam has a greater R-value and provides stronger resistance against moisture and air leakage, the material is also much denser and is more expensive. This is Pink Panther insulation and has a R value of 10. Zones 5–8: Add R5 to R6 insulative wall. DuPont Styrofoam Brand Scoreboard XPS Foam Insulation. Perfect for wetter and rainy regions. How are R-values Measured?. What You Need to Know About Foam Board Insulation. Q: What is the R-value of 2-inch foam board insulation? A: The R-value for 2-inch foam board insulation can range from 7. Some VIPs can have R-value as high as R-45 or even R-50 per inch. While closed-cell foam has a greater R-value and provides stronger resistance against moisture and air leakage, the material is also much denser and is more expensive. Insulation level are specified by R-Value. But one thing to consider is how well. 7 EPS Rigid Foam Board Insulation 1. Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. A SIP typically consists of 4- to 8-inch-thick foam board insulation sandwiched between two sheets of oriented strand board.