Best R Value Foam Board75-in x 4-ft x 8-ft Unfaced Foam Board Insulation Model # 100000048876 Find My Store for pricing and availability 23 STYROFOAM R-1, 0. You can also find foam board that is specifically for sound insulation. The type of insulation with the highest R-Values, with a few exceptions, is rigid foam or panel insulation. 0, which other insulating materials cannot touch. 25-in x 4-ft x 50-ft Dow Protection Board III Faced Foam For Use In Garage Doors Board Insulation Sound Barrier Model # 3049 Find My Store for pricing and availability 2 Kingspan Insulation. Ceilings can also have R-30, R-38, or R-49. It has an impressive R-value per inch at R-6, it’s fairly easy to work with, and it’s affordable. Insulation R-values vary based on the type, thickness and density of the insulation material. Usually, rigid foam board insulation is sold in sheets about 4 feet by 8 feet in size. Your rigid foam layer needs to be thick enough to prevent condensation problems. If you buy too much insulation, it will cost you more than what you’ll save on fuel. In this Buying Guide, we will show you how to find the Best R Value Foam Board for you - whether you're looking for a new R Value Foam Board. R-value measures how resistant types of insulation is based on the type, thickness and density of the insulation material. Also known as rigid insulation, these boards offer a high R-value, which helps keep your home at a comfortable temperature, even on the coldest days. The most popular inflatable pad is $200. If considering this type of insulation, it’s important to choose an option that is designed for exposed applications. The higher the R-Value, the greater the insulating power. Per square foot of R-value, rigid foam board insulation costs about twice as much as fiberglass. This type of rigid foam usually comes with a reflective foil facing on both. 6! Things like fiberglass batting, the fluffy cotton candy stuff, only has an R-value/inch of up to 3. Foam boards are a common type of basement wall insulation. Nov 16, 2022. below grade) to have R-10 vertical insulation at the slab perimeter, extending downward from the top of the slab to a depth of at least 2 ft. The material is costly, and fragile, factors that have limited its use in residential construction. Spray Foam Insulation For Metal Buildings Spray foam insulation is a two-part liquid insulation material that foams to insulate where it is applied. The new HFO-blown, closed-cell foam is much more environmentally friendly than conventional foam, and is higher R per inch. 0 Cost for 1 ft2 of R-1: $0. 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. The R-value of rigid foam insulation varies based on the materials used and how many layers are installed. Rigid foam insulation tends to have a low to moderate R-value per dollar, compared to fiberglass. There are 2 types of rigid foam: I. In a living space, the foam board should never be exposed when your project is complete. Monolithic slabs Monolithic, or thickened-edge, slabs can only be insulated on the exterior. R-Value Per Inch: R-6. Tuff-R™ and Super Tuff-R™, Dow Building Solutions, have an R-value of R 6. Insulation R-values vary based on the type, thickness and density of the insulation material. If your slab is heated, it’s a good idea to increase the R-value of the vertical and the horizontal insulation to at least R-20. Typically, rigid foam board insulation has an R-value between 4. Radiant barriers also slow the transfer of heat and can be placed just about anywhere in your building. The Nectar Premier Memory Foam Mattress (Queen) $999 $1499 Save $500 (33%) Buy From Nectar. 5 of rigid foam in zone 6, and at least R-10 of rigid foam in zones 7 or 8. 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. In metric units, the formula looks like this:. Aerogel has an R-value of about R-10 per inch, is 99% air and insulates up to 37 times higher R-value than fiberglass. 0 Cost for 1 ft2 of R-1: $0. One of the most common options for roof insulation is Thermax, a rigid board insulation. Owens Corning Pink R-13 Faced Insulation Roll: Best Overall 2. 5-in x 4-ft x 8-ft Unfaced Foam Board Insulation. 12 Where to Buy: Most big box hardware stores Polyisocyanurate (or polyiso for short) is a rigid foam board insulation that’s widely used in green building applications and van builds. Aerogel has an R-value of about R-10 per inch, is 99% air and insulates up to 37 times higher R-value than fiberglass. Is R30 insulation good for the attic? Well, it is about average; R-49 is better for the attic. 3 per inch if construction includes a 3/4" air space. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. Continuous Insulation Makes a Perfect Basement Wall Rigid foam is meant to be continuous. Its blowing agent is pentane, which has a very low global warming. For reference, the average R-value for fiberglass insulation, one of the most common types of insulation, is 2. Apply for a Home Depot Consumer Card. Owens Corning Pink R-13 Faced Insulation Roll: Best Overall 2. Spray foam insulation, especially the closed-cell kind, has an R-value of 6. To get the marked R-value, it is essential that this insulation be installed properly. Rigid foam board insulation indeed has some of the best R-values of all insulation. Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. For example, insulating a 10-square-foot wall area to R-15 costs about $3. And when it comes to R Value Foam Board, that means finding the right ones for your needs. Best Insulation for Basement Ceilings 1. Foam boards are a common type of basement wall insulation. Fiberglass Insulation Cost Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. 60 per square foot for an R-value of. The new HFO-blown, closed-cell foam is much more environmentally friendly than conventional foam, and is higher R per inch. Square edge foam board; Strong, lightweight pink foam panels don't require special tools; 20% recycled content; Provides a continuous layer of insulation, sealing buildings from air and moisture intrusion in above and below grade applications; Commonly referred to as XPS foam board; Maintains 90% of R-value for the lifetime of the building. Foam board comes in three different types with each type having its different qualities and. The best-known advantage of spray foam’s high R-value per inch of 6. Johns Manville Series R13 Fiberglass Roll Insulation 5. 2 per inch Extruded Polystyrene – R-values of around 5. You can also find foam board that is specifically for sound. You can even go the classic, old school route and get a budget blue pad for $15. 62 after $25 OFF your total qualifying purchase upon opening a new card. Ceilings can also have R-30, R-38, or R-49. It provides an R-value of 6 per inch of thickness and often comes foil-faced to help reflect radiant heat. Polystyrene (otherwise known as. Second, mineral-wool batts generally perform better in damp environments than fiberglass batts. Tuff-R™ and Super Tuff-R™, Dow Building Solutions, have an R-value of R 6. 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. Foam board comes in three different types with each type having its different qualities and. Continuous Insulation Makes a Perfect. Foam board insulation, or rigid panels of insulation, can be used to insulate almost any part of your home, from the roof to the foundation. Card clad foam board is - foam with thick card applied to either surface. A 1 1/2-inch thick sheet of rigid foam insulation has a R-value of 7. A conservative approach calls for at least R-2. Sep 22, 2021. Per square foot of R-value, rigid foam board insulation costs about twice as much as fiberglass. BEST OVERALL: Owens Corning R-38 Kraft Faced Fiberglass Insulation BEST BANG FOR THE BUCK: Frost King CF1 “No Itch” Natural Cotton Insulation BEST BLANKET: Owens Corning R-30 EcoTouch. The R-value of this type of insulation ranges from 3. The most common materials include expanded polystyrene (similar to Styrofoam), extruded polystyrene, and polyisocyanurate. In climate zones 4 and 5, the code requires certain slabs (below-grade slabs that are less than 12 in. Fiberglass Insulation Cost Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. In this Buying Guide, we will show you how to find the Best R. Foam board insulation has the advantage of being higher in R-value than automotive insulation, a measurement of how well a material lets heat pass through it. 5 R Value Rigid Insulation Board 00:00 02:48 R Value by Material. A good exterior wall R-value is R-23. R-1, 0. For example, without insulation, it can range from $0. This insulation board is probably one of the most widely used foam board insulation products. ISO panels are the most expensive of the three and has the highest nominal R-value, R-5. Foam Board Insulation Owens Corning FOAMULAR 150 1-1/2 in. Exterior Foam Insulation: Best Practices. Advantages: easy to install, low installation cost, provides an approved air barrier. The R-value of most insulations also depends on temperature, aging. Polyurethane is available as rigid boards and spray foam both. Adding one inch of insulating sheathing (R-5) will increase a 2’ x 6’ stud wall from an effective R-14. Typically, a higher. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. R-Value is a measure of insulation’s ability to resist heat traveling through it. Improper installation can reduce insulation’s R-value by 40 percent. Per square foot of R-value, rigid foam board insulation costs about twice as much as fiberglass. Tuff-R™ and Super Tuff-R™, Dow Building Solutions, have an R-value of R 6. Closed-cell spray foam is better for exterior walls because it is water-resistant, has a higher R-value. 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. 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. To convert the R-value of a specific thickness of a material to RSI, divide the R-Value by 5. You can also find insulation boards designed for garage insulation applications, such as for walls and garage doors. If two layers are installed, it doubles the R-value and cuts heat/conditioned air loss in half. 5 of rigid foam in Climate Zone 3, at least R-5 of rigid foam in Zones 4 or 5, at least R-7. 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. For example, insulating a 10-square-foot wall area to R-15 costs about $3. BUILDING AMERICA (BA) has been advocating the use of rigid foam sheathing insulation for years as a means. 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. R-3. Get free shipping on qualified Foam Board Insulation products or Buy Online Pick Up in Store today in the Building Materials Department. 5 of rigid foam in climate zone 3, at least R-5 of rigid foam in zones 4 or 5, at least R-7. This means, in a standard wall, multiple applications can be done to get a higher R-value. An R-value tells you how well a type of insulation can keep heat from leaving or entering your home. 4) Foam is affordable. R-Value and Energy Codes. Also known as rigid insulation, these boards. The cost of closed-cell spray foam insulation is between $0. Foam board insulation has the advantage of being higher in R-value than automotive insulation, a measurement of how well a material lets heat pass through it. 25-in x 4-ft x 50-ft Dow Protection Board III Faced Foam For Use In Garage Doors Board Insulation Sound Barrier. Great Stuff Pro Gaps & Cracks Sealant: Best for Touch-Ups 4. Foam Board vs. 3) The FlexMat Plus. Cover it with a finishing material such as drywall rather than leaving it exposed to the room. Johns Manville AP™ Foil-Faced Foam Sheathing board is rigid polyisocyanurate foam sheathing that provides exceptional heat, moisture and air control to protect your building's exterior walls, and when installed correctly, eliminates all major thermal bridges that cause heat loss. The R-value of rigid foam is anywhere between 3. Open-cell spray foam on the other hand has an R-value/inch of around 4 while EPS rigid foam board has a R-value/inch of around 3. Top 15 Best R Value Foam Board Picks For 2022. If the slab has hydronic tubing, the minimum R-value of this insulation increases to R-15. 12 Where to Buy: Most big box hardware stores Polyisocyanurate (or polyiso for short) is a rigid foam board insulation that’s widely used in green building applications and van builds. Polyisocyanurate: Known as polyiso for short, polyisocyanurate foam has the highest R-value per inch (R-6. Rigid foam comes in 4-by 8-foot sheets and 1/2-inch to 4-inch thicknesses. Disadvantages: thermal bridging at each girt location reduces the effective R-Value. Rigid foam board insulation is available in numerous materials, including polystyrene ( R-3. Insulation FAQs How does insulation work?. If you can get a ceiling R-value of R-49, that is a good R-value. Rigid Foam R-Value. Contact Fox Blocks today for more help on deciding what R-value you need for your basement walls. If you read the article on minimum foam thickness ( Calculating the Minimum Thickness of Rigid Foam Sheathing ), then you know that the minimum R-value for a 2x4 wall in your climate zone is R-5, so 1-inch of polyiso will work. Johns Manville AP™ Foil-Faced Foam Sheathing board is rigid polyisocyanurate foam sheathing that provides exceptional heat, moisture and air control to protect your. As a foil-faced polyisocyanurate foam insulation, Enerfoil TM ’s R-Value actually more than doubles. It provides an R-value of 6 per inch of thickness and often comes foil-faced to help reflect radiant heat. It has an impressive R-value per inch at R-6, it’s fairly easy to work with, and it’s affordable. Polyisocyanurate: Known as polyiso for short, polyisocyanurate foam has the highest R-value per inch (R-6. 0 found in most foam pads… proof that double thickness doesn’t translate into double warmth. The material used for the rigid insulation board will affect the R-Value as well as the cost; the higher the R-Value, the higher the cost is, on average. Polystyrene loose-fill or bead insulation typically has a lower R-value compared to the foam board. For standard applications, the R-Value ranges from R-7 to R-19. BEST OVERALL: Owens Corning R-38 Kraft Faced Fiberglass Insulation BEST BANG FOR THE BUCK: Frost King CF1 “No Itch” Natural Cotton Insulation BEST BLANKET: Owens Corning R-30. 5) and polyisocyanurate ( R. Open-cell foam is lighter and less expensive but should not be used below ground level where it could absorb water. Owens Corning Pink Insulation Foam: Best Budget Option 3. Rigid Foam R-Value. Styrofoam Board Insulation. Get free shipping on qualified Foam Board Insulation products or Buy Online Pick Up in Store today in the Building Materials Department. 75-in x 4-ft x 8-ft Unfaced Foam Board Insulation Model # 100000048876 Find My Store for pricing and availability 23 STYROFOAM R-1, 0. If insulating sheathing is to serve as the drainage plane, all seams must be taped and flashing installed at all penetrations and openings. STYROFOAM. Proper Installation of INSULPINK® 7. Polyisocyanurate foam board roof insulation is one of the best roofing insulations and is one of the top choices for very high thermal efficiency. One common use of extruded polystyrene foam board is for foundation insulation panels. For reference, plywood has an R-value of 1. Insulation R-values vary based on the type, thickness and density of the insulation material. However, your home may not need insulation with the highest R-value. Foam board or insulating boards are rigid panels of insulation that have a high R-value. R-value is a standard unit of measurement for determining, among many things, how effective your insulation will be. Closed-cell or open-cell spray foam. 5 per inch, depending on whether you're using open-cell (3. The material used for the rigid insulation board will affect the R-Value as well as the cost; the higher the R-Value, the higher the cost is, on average. In addition to thickness, density and material type are key factors in the R-value of foam board insulation. Foam boards are a common type of basement wall insulation. Attics can have R-30, R-38, or R-49. The table below shows what levels of insulation are cost-effective for different climates and locations in the home. For example, our polyiso rigid foam boards have R-values between 6. A good exterior wall R-value is R-23. Rigid foam board insulation is available in numerous materials, including polystyrene ( R-3. The most popular foam pad is $55. Best for floors, foundation and basement walls, interior and exterior wall sheathing and low-sloped ceilings. Is R30 insulation good for the attic? Well, it is about average; R-49 is better for the attic. The R-value of most insulations also depends on temperature, aging, and moisture accumulation. To convert RSI to R-value, multiply the RSI by 5. That formula is in imperial units. Polyisocyanurate Board. A good exterior wall R-value is R-23. A foam insulation type also differs based on weather climate. XPS has an R value of 4. The advantage of Thermax and other similar products is that they eliminate the need for drywall or other interior finishes. Pole barn insulation blankets that are 93 inches wide and fit between 8-foot on center posts with no thermal break can achieve an R-value of 19. Fiberglass insulation is less than half the price of rigid foam board insulation when calculated by R-value per square foot. To get the marked R-value, it is essential that this insulation be installed properly. A comparable R-value for rigid foam costs roughly $10. Owens Corning Pink Insulation Foam: Best Budget Option 3. For example, our polyiso rigid foam boards have R-values between 6. Foam Board Insulation. 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. The 5 Best Metal Roofing And Siding Insulation Options Spray Foam Rigid Board Batt and Blanket Loose-fill Foil Bubble 1. #1 Home Improvement Retailer Store Finder. It should be able to be installed for about the same price as conventional, though it's still new enough that some companies may charge a premium for it. The higher the R-Value the better the thermal performance of the insulation. For reference, plywood has an R-value of 1. Foam Board Insulation Owens Corning FOAMULAR 150 1-1/2 in. Note that the R-value of this insulating board is increased to R-9. Polyisocyanurate features an R-value up to 8. Fire Resistant Rigid Foam Boards are rigid panels usually made out of Expanded Polystyrene (Styrofoam) – R-values that range from 3. Rigid foam board insulation indeed has some of the best R-values of all insulation materials. R-value is a standard unit of measurement for determining, among many things, how effective your insulation will be. The high R-value means homeowners can use rigid foam board insulation in nearly any climate. Frost King Natural Cotton Multi-Purpose Insulation 6. RSI (R-value Système International ) is the metric equivalent. A polyurethane rigid foam is ideal. The R-value of rigid foam insulation varies based on the materials used and how many layers are installed. If two layers are installed, it doubles the R-value and cuts heat/conditioned air loss in half. R-Value Per Inch: R-6. In addition, because of its rigid nature, closed-cell insulation also helps with a building's structural integrity. The higher the R-Value the better the thermal performance of the insulation. Just as the name suggests, rigid board insulation consists of rigid panels that are placed directly underneath your pole barn’s siding. Also called “foam board” or “continuous” insulation. Polyiso is available for flat roof insulation systems, and it also can be supplied as. Adding one inch of insulating sheathing (R-5) will increase a 2’ x 6’ stud wall from an effective R-14. Depending on the type of foam board used, the R-values can range from 3. The R-value of this type of insulation ranges from 3. This is an even more dense and more expensive foam board insulation. In climate zones 4 and 5, building codes require a minimum of R-10 vertical insulation that extends down 2 ft. For example, insulating a 10-square-foot wall area to R-15 costs about $3. 5 per inch For the best in this category check out ROCKWOOL COMFORTBATT. Extruded polystyrene foam (XPS) also known as blue board or pink board comes in many different thicknesses and edge profiles. Owens Corning® FOAMULAR® & FOAMULAR® NGX™ 250 Extruded Polystyrene (XPS) Rigid Foam Insulation is a closed cell, highly moisture-resistant foam board well suited to meet the insulation needs for a wide variety of residential and commercial building applications. The R refers to absolute thermal resistance. The table below shows what levels of insulation are cost-effective for. The best R-value for attics is R-49, or even higher. 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. Most varieties of this type of insulation consist of expanded foam. Get free shipping on qualified Foam Board Insulation products or Buy Online Pick Up in Store today in the Building Materials Department. The best R-value for attics is R-49, or even higher. #1 Home Improvement Retailer Store. Closed-cell spray foam has an R-value/inch of 7 while XPS rigid foam board has an R-value/inch of only 5. Owens Corning® FOAMULAR® & FOAMULAR® NGX™ 250 Extruded Polystyrene (XPS) Rigid Foam Insulation is a closed cell, highly moisture-resistant foam board well suited to meet the insulation needs for a wide variety of residential and commercial building applications. It is ideal for model making, although foam board can be relatively expensive. An R-value tells you how well a type of insulation can keep heat from leaving or entering your home. If you have only limited space and require a high insulating value per inch, polyiso could be your best choice. 7 to 10 or more, depending on the product. Rated at R4 per inch; EPS foam insulation boards are more permeable to air and moisture than XPS, but it doesn't retain moisture to the same extent because of it's more closed cell structure and it's breathability which lets it dry out. All-weather/four-season coaches that are built for beyond freezing temperatures have R-values that go up to R-10 in some cases. The R-Value for it goes up to 2. R-value measures how resistant types of insulation is based on the type, thickness and density of the insulation material. To achieve that, you can use any of these exterior wall insulation materials: Cellulose-based insulation. Fox Blocks moisture-resistant ICF basement walls surpass the R-value needs for all climate zones, ensuring an energy-efficient, comfortable, safe, durable, and healthy home with manageable energy bills. This represents an increase of 35 percent effective thermal resistance, with only 15 percent increase in the overall wall thickness. Polyurethane is available as rigid boards and spray foam both. Perfect for wetter and rainy regions. If your slab is heated, it’s a good idea to increase the R-value of the vertical and the horizontal insulation to at least R-20. 16 per square foot for an R-value of 11 and $0. R-Value is a measure of insulation's ability to resist heat traveling through it. 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. So, you need to know an insulation product’s thickness as well as its R-Value in order to compare it to another product. Fox Blocks moisture-resistant ICF basement walls surpass the R-value needs for all climate zones, ensuring an energy-efficient, comfortable, safe, durable, and healthy home with manageable energy bills. 4 to an effective R-19. The best-known advantage of spray foam’s high R-value per inch of 6. 0 ), polyurethane ( R-5. Rigid foam board insulation indeed has some of the best R-values of all insulation. If you buy too much insulation, it will cost you more than what you’ll save on fuel. Styrofoam Board Insulation. R-Value is a measure of insulation’s ability to resist heat traveling through it. You can use rigid board sheets. A 1 1/2-inch thick sheet of rigid foam insulation has a R-value of 7. Foam boards are lightweight and easy to cut and shape. 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. An R-value tells you how well a type of insulation can keep heat from leaving or entering your home. 5 of rigid foam in Zone 6, and at least R-10 of rigid foam in Zone 7 or 8. Note that the R-value of this insulating board is increased to R-9. Typically, a higher R-value means better climate control and better energy efficiency for your home. Typically, a higher R-value means better climate control and better energy efficiency for your home. 5 per inch, depending on whether you’re using open-cell (3. You can use rigid board sheets. Rigid Board Insulation. Best Insulation for Basement Ceilings 1. This type of rigid foam usually comes with a reflective foil facing on both sides, so it can also serve as a radiant barrier. Polystyrene loose-fill or bead insulation typically has a lower R-value compared to the foam board. The R refers to absolute thermal resistance. The R-value depends on the type of insulation, its thickness, and its density. Polystyrene (otherwise known as Styrofoam insulation) and polyurethane are the most common materials used in making foam board. The best-known advantage of spray foam’s high R-value per inch of 6. R-value measures how resistant types of insulation is based on the type, thickness and density of the insulation material. Great Stuff Pro Gaps & Cracks Sealant: Best for Touch-Ups 4. Get free shipping on qualified Foam Board Insulation products or Buy Online Pick Up in Store today in the Building Materials Department. Typically, a higher insulation R rating means better climate control and better energy efficiency for your home. One common use of extruded polystyrene foam board is for foundation insulation panels. And when it comes to R Value Foam Board, that means finding the right ones for your needs. The foil facing provides an excellent water barrier, and polyiso, at least initially, has the highest R-value of the three types of foam board at R6. Top 15 Best R Value Foam Board Picks For 2022. They are recommended for buildings that are heated full-time and are easy to install. 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. Insulated bay doors and RV door insulation may have different R-values than the sidewalls. These are closed-cell polyisocyanurate insulating foam core board products. Eight inches of poor quality insulation may have a higher and better R-Value than one inch of top-quality insulation. It can be cut and shaped easily, using hand tools and light equipment such as fretsaws. Foam board insulation, or rigid panels of insulation, can be used to insulate almost any part of your home, from the roof to the foundation. 0 per inch Polyisocyanurate – R-values that range from 6. Contact Fox Blocks today for more help on deciding what R-value you need for your basement walls. The cost tends to differ depending on the R-value. These boards have a high R-value and provide continuous coverage. Type: Memory foam | Height: 13 inches | Best for: Hot sleepers, couples, back and joint pain sufferers. The higher the R-Value the better the thermal performance of the insulation. Leave a Comment / Office Products / By / Office Products / By. A conservative approach calls for at least R-2. It sports a lot of extra thickness, at the cost of about 5 extra ounces. To convert the R-value of a specific thickness of a material to RSI, divide the R-Value by 5. How to Insulate Basement With Foam and Stud Wall When to Call a Professional Back to Top Project Overview Total Time: 1 - 3 hrs Yield: One 12-foot by 8-foot basement wall Skill Level: Intermediate Estimated Cost: $150 to $200 Earth is one of the best insulating materials for a home. Foam Board Insulation. Typically, a higher insulation R rating means better climate control and better energy efficiency for your home. 5 R Value Rigid Insulation Board 00:00 02:48 R Value by Material. 5 Scored Squared Edge Rigid Foam Board Insulation Sheathing (290) Questions & Answers (104) + Hover Image to Zoom $ 35 62 Buy. A higher insulation R-value usually means a higher price point as well. Extruded polystyrene foam (XPS) also known as blue board or pink board comes in many different thicknesses and edge profiles.