2024 Attic insulation r value

Making these upgrades together in one year would allow you a tax credit of up to $1,200 for the insulation and up to $2,000 for the heat pump. Similarly, you could combine a heat pump installation with window/door replacements. In that scenario, the $2,000 credit for the heat pump could be combined with tax credits up to $600 total for the ... . Hot dog lunchable

Oct 6, 2023 · · Mineral Wool: Mineral wool loose-fill insulation has an approximate R-value of R-3.0 to R-3.3 per inch. It is comparable to fiberglass insulation in terms of insulation value. In many countries like Canada and the United States, the use of asbestos in insulation materials began to decline in the 1970s due to increased awareness of its health ... An R-value is also calculated per inch of width. Therefore, a three-inch-thick board has an R-value of 3. Blown fiberglass installed in the attic has an R-value of 2.2 per inch, so 12 inches of it would give you an R-value of 26.4 in your attic installation project. Insulation professionals will be able to tell you how much insulation you need ...Figure 1. Measuring attic insulation thickness. Comparing Insulation Costs. R-value is the ability of a material to prevent heat transfer. Thicker materials do not always have higher R-values. The R-value of a 6-inch rigid piece of polystyrene has an R-value of 30, while a 6-inch fiberglass blanket will have an R-value of about 21.The higher the R-value, the greater the insulating power. Almost all insulation products have to tell you their R-value — including duct wrap. Pipe and duct insulation are the only exceptions. So, if you’re looking at insulation with an R-value of 38 from Company A and an R-value of 38 from Company B, you’ll know the two products offer ...Attic insulation is an essential component of any home’s energy efficiency, helping to keep warm air inside during the winter and cool air inside during the summer. If you’re consi...Jan 29, 2023 ... The first thing to note about the rated R-value is that it's a static number obtained from a test performed under specific conditions. The test ...Where using a simulated energy performance analysis, sections of ducts that are: installed in accordance with Section R403.3.6; located directly on, or within 5.5 inches (140 mm) of the ceiling; surrounded with blown-in attic insulation having an R-value of R-30 or greater and located such that the top of the duct is not less than 3.5 inches ...In fact, there are building codes that require a certain R-value for insulation depending on where in the country you live. That’s where this nifty EnergyStar chart comes in handy. Sacramento and most of California are in Zone 3, which requires attic insulation with an R-value between 30 and 60. On this chart, each part of the country is ...Oct 6, 2023 · In colder climates, building codes require attic insulation to have a higher R-value than in warmer climates. R-value is determined by insulation type and thickness. For example, cellulose ... Feb 3, 2021 ... The Right Insulation R-Value Changes Based on Where You Live · An R-value of 38 if the home uses electric heating, oil-fired furnaces, or ...That’s why different regions of the U.S. have different recommended insulation levels. The Sheboygan County area (and central and southern Wisconsin) is in Zone 6. Recommended R-values in this region range from R-5 to R-60, depending on the area being insulated.For most, it’s only too easy to toss out old toys, especially ones that come inside Happy Meal boxes. But as time passes, some of these tiny toys are appreciating in value — and qu... Where using a simulated energy performance analysis, sections of ducts that are: installed in accordance with Section R403.3.6; located directly on, or within 5.5 inches (140 mm) of the ceiling; surrounded with blown-in attic insulation having an R-value of R-30 or greater and located such that the top of the duct is not less than 3.5 inches ... Jul 15, 2020 ... R-value is a measure of resistance to heat flow through a given thickness of material, that means the higher the R-value, the greater the ...Here’s a quick guide. Measure how many inches of insulation you have in your attic. If it looks really uneven with high mounds in certain areas, and lower levels in others, take an average depth measurement. Determine R-value. To do this simply follow the chart below! Type. Average R-Value / Inch. Blown Fiberglass. 2.5.Oct 6, 2023 · In colder climates, building codes require attic insulation to have a higher R-value than in warmer climates. R-value is determined by insulation type and thickness. For example, cellulose ... Once you know where you need to insulate and the recommended R-values, ... Cavity fibrous or cellulose insulation can be installed at levels up to R-15 in a 2-inch x 4-inch wall and up to R-21 in a 2 inch x 6-inch wall. R-values can be higher for foam insulation and other advanced insulation systems. ... You should consider attic or roof ...All these have R-values ranging from R-3.2 to R-3.8 per inch. The R-value of closed-cell foam is R-6.5-7 per inch. Contractors often use it to insulate under slabs, ceilings, walls, and roofs. It performs better than other insulation types. It provides an excellent air barrier, resists moisture, and retards vapor.When designing a highly insulated roof (high-R value roof), it is important, especially in cold climates, to note the ratio of vapor-impermeable to vapor-permeable R-values. For cold climates, the air-impermeable insulation is maintained at 50% or more of the total R-value of the roof system. This is for condensation control.Locate Your Climate Zone To Determine Insulation R-Value. For houses in the northeastern United States or other colder areas, you might need attic insulation with an R-value as high as R-60. For houses in a southwestern state or other areas with generally warmer temperatures, you might need attic insulation with an R-value of only R-30.Before buying attic insulation, you should be aware of different materials used for insulating attics. Polystyrene: It has an R-value of 3.8 to 5 per inch and is mainly used in foam board insulation. Liquid polyurethane: The R-value of this type of insulation ranges from 3.5 per inch to 6.5 per inch. The value varies depending on whether it is ...To get the most R-value with the least thickness, use batt insulation with higher R-value per inch in combination with rigid foam insulation. Rigid foam sheeting has an R-value ranging from R-5 to R-10 per inch of thickness. This means you can have a combined R-value ranging from R-23 to R-31 with only 5-1/2 inches of combined …attic with R-30) • ®Puts AttiCat® Blown-in PINK Insulation where you need it, providing optimum insulating R-value for your climate zone • Provides complete coverage, even around HVAC ducts, pipes, wires and outlets Applications AttiCat ® PINK Blown-In Insulation is designed for application in attics of new and existing homes. Standards ...Identify the recommended R-value for your zone – Typically R-30 to R-60. Divide the recommended R-value by the R-value per inch of your insulation type. For example, Zone 6 recommends R-49. For a 1,000-square-foot attic using cellulose (R-3.7/inch), you'd need 49/3.7 = 13 inches of insulation. Free online calculators also …Learn how to choose the best type of insulation for your attic and other areas of your home based on R-value, a measure of heat resistance. Find out the …May 14, 2022 · Get a free attic inspection and quote to insulate your attic. Generally speaking, attic insulation can cost anywhere from $1,100 to $1,500, or between $1.50 to $3.50 per foot, depending on the material you choose and how much space you need to cover. As we noted earlier, blown-in insulation is the cheapest option. Cellulose insulation R value per inch is variable, but most cellulose insulation products offer R3.5-R3.7 per inch.4. So, if you need to reach R30 in your attic, you’ll need a significant thickness—anywhere from 8.1 to 8.6 inches of depth. But, remember that you’ll have to take care to maintain that R-value throughout the life of your ...ABOUT R-VALUES The chart shows the R-values of this insulation. R means resistance to heat flow. The higher the R-value, the greater the insulating power. Compare insulation R-values before you buy. To get the marked R-value, it is essential that this insulation be installed properly with pneumatic equipment.R-value is a measurement that rates how resistant a product is to heat flow, measuring the ability of heat to transfer from one side of an object to another. Our calculator helps you measure what r value for exterior walls you may be looking for, as well as for different applications. i.e. ceiling insulation R value, R value for walls and more.The U.S. Department of Energy provides guidelines for recommended R-values based on geographic location and the type of insulation being used. For Miami and South Florida, the recommended R-values are: – Attic: R30 to R60. – Wall cavities: R13 to R15. – Floors above unconditioned spaces: R19 to R25.Rather than finding insulation with an R-value of R38 per inch of thickness, you simply need to have enough inches of insulation to equal the recommended R-value. If your attic has, say, 12 inches of …If you’ve ever stumbled upon a box of old stamps in your attic or inherited a stamp collection from a relative, you may be wondering if those stamps hold any value. The good news i...The minimum ceiling insulation R-values shall be R-19 in Climate Zones 0 through 4 and R-24 in Climate Zones 5 through 8. The minimum wall insulation R-value ...What is Insulation R-Value? R-value is an important part of insulation—it is an indication of a particular material’s resistance to conductive heat flow. In general, the higher the R-value (thermal resistance), the greater the insulation’s effectiveness. The R-value depends on the insulation’s type/material, thickness and density.The "R-value," which measures a material's resistance to heat flow, is key here. The higher the R-value, the better the insulation. For example, back in the 1970s, the minimum standard was R-24. By 2006, it was R-38 in many northern states. And as of 2018, the standard reached R-49 in these areas. With the R-value being measured per inch, …Minimum Standards. Minimum insulation values for new home are required based on your state and local building codes. Ohio’s minimum R-values can be found in Chapter 4101:8-11 Board of Building Standards: Residential Code of Ohio.To improve your home’s design beyond the minimum insulation values, you should consider a holistic system design …Nov 5, 2020 · wall R-value Crawl space wall R-value 60b,c,d 30 13 20 15ci/20ci 30 R-20 or 13+5ci or 15ci R-20 or 13+5ci or 15ci ci = Continuous insulation a. R-values are minimums. Where insulation is installed in a cavity that is less than the label or design thickness of the insulation, the installed R-value of the insulation shall be not less than the R ... For most, it’s only too easy to toss out old toys, especially ones that come inside Happy Meal boxes. But as time passes, some of these tiny toys are appreciating in value — and qu...The recommended attic insulation R-value for Zone 1 is R30 to R60. Zone 2 – South Texas: This zone covers cities like Corpus Christi, McAllen, and Brownsville. It has a similar climate to Zone 1 but experiences even hotter temperatures. The recommended attic insulation R-value for Zone 2 is R30 to R60.Where using a simulated energy performance analysis, sections of ducts that are: installed in accordance with Section R403.3.6; located directly on, or within 5.5 inches (140 mm) of the ceiling; surrounded with blown-in attic insulation having an R-value of R-30 or greater and located such that the top of the duct is not less than 3.5 inches ...The thickness of R-19 insulation is 6.25 inches. R-value measures how effectively a specific kind of insulation blocks the transfer of heat. The two main types of insulation are ba...Attic insulation comes in blanket, loose-fill, spray foam, and panel form. Factor in your home’s climate and R-value when picking attic insulation. Use a vapor barrier to prevent moisture. Attic insulation costs between $1,500 and $3,500 on average.R-Value is a measure of insulation's ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The recommended …that attic insulation cover the tops of the joists and that is also why we often recommend the use of insulative sheathing on walls. The short-circuiting through metal framing is much greater than that through wood-framed walls; sometimes the insulated metal wall's overall R-value can be as low as half the insulation's R-value. Insulation Fact ...Cellulose insulation is often cited as being one of the greenest products we can use to insulate our homes and businesses, but as with all investments we need to know whether it will pay off in the long term. The R-value of cellulose insulation can range between 3.5 and 3.8. This variation is created by several factors, the main ones being the ... Method 1: Quick Check of Insulation Levels. Looking across your attic, if the insulation is level with or below the attic floor joists, you probably need to add more insulation. Assumes R-3/inch. If you cannot see any of the floor joists because the insulation is well above them, you probably have enough, and adding more insulation may not be ... Are you curious about the value of that old family heirloom sitting in your attic? Or perhaps you stumbled upon a unique antique at a garage sale and want to know if it’s worth any...The recommended attic insulation R-value for Zone 1 is R30 to R60. Zone 2 – South Texas: This zone covers cities like Corpus Christi, McAllen, and Brownsville. It has a similar climate to Zone 1 but experiences even hotter temperatures. The recommended attic insulation R-value for Zone 2 is R30 to R60.Method 1: Quick Check of Insulation Levels. Looking across your attic, if the insulation is level with or below the attic floor joists, you probably need to add more insulation. Assumes R-3/inch. If you cannot see any of the floor joists because the insulation is well above them, you probably have enough, and adding more insulation may not be ...Attic insulation needs a higher R-value than the wall insulation, for instance, because heat naturally rises and commonly escapes through your attic. Different materials also differ in R-values. For example, spray foam insulation has a different R-value than fiberglass.An insulation R-value is how manufacturers determine the heat capture ability of a piece of insulation. The higher the R-value, the more heat the insulation will retain. Generally speaking, blow-in insulation and insulation blankets have a lower R-value, whereas spray foam insulation and foam board insulation have higher R-values. An R-value identification mark shall be applied by the manufacturer to each piece of building thermal envelope insulation 12 inches (305 mm) or more wide. Alternately, the insulation installers shall provide a certification listing the type, manufacturer and R-value of insulation installed in each element of the building thermal envelope. The U.S. Department of Energy provides guidelines for recommended R-values based on geographic location and the type of insulation being used. For Miami and South Florida, the recommended R-values are: – Attic: R30 to R60. – Wall cavities: R13 to R15. – Floors above unconditioned spaces: R19 to R25. R-Value. Insulation is important because of its ability to reduce the amount of heat that flows between the inside and outside of your home. The ability of insulation material to reduce heat flow is called its R-value. The greater the R-value, the more this heat flow is reduced. Cost of Insulation. Aug 13, 2015 ... Standard fiberglass batts are the most common insulation used in attics and walls because they fit snuggly between joists and studs that are ...R-Values. The R-value is a measure of how well a two-dimensional barrier, such as a wall, window, or ceiling, resists the conductive flow of heat. The higher the R-value of a material, the better it is at insulating; protecting you from extreme heat (and cold) and also reducing your energy bills. The R-value depends on the type of material, its ...Jul 20, 2022 ... As long as you choose a top insulation contractor like Atticare you may only have to insulate your attic once. Good quality insulation needs to ...Ask This Old House general contractor Tom Silva explains R-value and the need for good insulation. (See below for tools and steps.)SUBSCRIBE to This Old Hous...In our experience, homes in and around Harrisburg, PA, benefit from a combination of air sealing and blown-in insulation installations within the attic. As per the Energy Star guidelines, Central Pennsylvania falls within climate zone five, making attic insulation R-values between R49 and R60 ideal for optimizing energy usage.The biggest upside to this insulation is the R-value, which is the highest overall. As such, it’s a popular option for roof insulation in an attic. However, rigid foam board is also one of the more expensive insulation options. Pros of Rigid Foam Board Insulation. High R-value up to 8.0. Moisture-resistant. Cons of Rigid Foam Board …There are many types of attic insulation. One factor to consider when choosing between them is how much thermal protection your attic needs. R-value, a measure of thermal resistance, varies by location. R-30 is the minimum requirement in Southern states and R-49 for Northern states.R-Value is a measure of insulation's ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The recommended …Quick Facts & Impacts. Insulation helps control conduction, one of three heat flow paths through a home. Increased insulation R-values equals more insulating capacity & reduced costs to operate a home’s heating and cooling systems. Attic insulation is the most important location and best return on investment. That means that the insulation R-value chart you will find below is basically an insulation thickness chart, based on 1 inch of insulation. Example: Fiberglass batt has a typical R-value of R-3.7 per inch of thickness. That means that if we were to use 4-inch fiberglass batts, the overall R-value would be R-14.8. The higher the. R-value, the better the insulation properties of the material used. In Nebraska, it is recommended that the attic of an existing home be ...In an uninsulated attic or even an attic with 3-4 inches of existing insulation, a minimum of R-38 is needed. However, it's not uncommon for attics in this ...Match your climate zone to the recommended R-value below. For example, if you live in zone four, consider getting insulation with an R-value between 38 and 60. The R-value for roof insulation and attic insulation should have a minimum value of 30. Zone One and Two: R-30 to R-49. Zone Three: R-30 to R-60.Attic Insulation R-value. The insulation levels of an attic, or of any part of a house, are understood through the R Value, that is the value with which the insulating material is resistant to heat flow. In general, to optimally isolate an attic, on average, an R value of the insulation is required, ranging from R 50 to R 60. That means that the insulation R-value chart you will find below is basically an insulation thickness chart, based on 1 inch of insulation. Example: Fiberglass batt has a typical R-value of R-3.7 per inch of thickness. That means that if we were to use 4-inch fiberglass batts, the overall R-value would be R-14.8. Request project quote. A ttic insulation costs about $2,500 on average, though the price typically ranges between $1,700 and $2,100. However, the price to insulate an attic can reach as high as $3,500 or as low as $1,500, depending on factors like the type of insulation you need and how much you plan to use.Increasing attic insulation to an R-60 can provide a good barrier to heat loss (the code minimum for new buildings is R49). To determine the present R-value of your attic insulation, have an energy assessment; you can also measure the height of the insulation and multiply times the R-value per inch of the material that is in place (2.5 to 4.0 ...May 14, 2022 · Get a free attic inspection and quote to insulate your attic. Generally speaking, attic insulation can cost anywhere from $1,100 to $1,500, or between $1.50 to $3.50 per foot, depending on the material you choose and how much space you need to cover. As we noted earlier, blown-in insulation is the cheapest option. Tom defines R-value as the resistance of heat transfer through the insulation—meaning, the better the R-value, the less heat is lost. When it comes to R-value and recommendations for your home, a lot depends on where you live. In southern parts of the United States, the recommended R-value for a roof is R-30; for the middle of the country …Insulation is rated by its R value, determined by a specific mathematical formula. The technical definition involves heat flux, which is the “heat transfer rate per unit of area over a unit of time.”. Essentially, insulation R value describes the insulation’s thermal resistance; that is, how well it resists the passage of heat.Step 4 for loose-fill insulation. 4. Determine the attic insulation area; based on the spacing of the joists, order sufficient insulation for the attic. Refer to the MEC for the R-value for your area. It is important to cover the top of ceiling joists or bottom cord of truss with insulation. 5. Obtain complete coverage of full-thickness, non- The minimum ceiling insulation R-values shall be R-19 in Climate Zones 1 through 4 and R-24 in Climate Zones 5 through 8; and. 2. The minimum wall R-value shall be R-13 in all climate zones. Wall(s) separating a sunroom with a thermal isolation from conditioned space shall meet the building thermal envelope requirements of this code. R-Value. Fiberglass. 2.2 to 3.8 per inch, depending on loose-fill, blown-in, or fiberglass batt insulation. Foam Board. Approximately R-5 per inch of thickness. Rockwool. Between 3 to 3.3 for each inch of insulating material. Cellulose. Between 3.2 …Minimum Standards. Minimum insulation values for new home are required based on your state and local building codes. Ohio’s minimum R-values can be found in Chapter 4101:8-11 Board of Building Standards: Residential Code of Ohio.To improve your home’s design beyond the minimum insulation values, you should consider a holistic system design …Installing attic insulation is one of the best ways to control energy consumption and costs. Learn how to insulate an attic by yourself. ... Depth of Expanding Fiberglass Insulation: R-Value: 7 inches: R-19: 9 inches: R-25: 11 inches: R-30: 13 inches: R-38: 15 inches: R-44: 17 inches: R-49: 20 inches: An insulating material’s resistance to conductive heat flow is measured or rated in terms of its thermal resistance or R-value -- the higher the R-value, the greater the insulating effectiveness. The R-value depends on the type of insulation, its thickness, and its density. The R-value of most insulations also depends on temperature, aging ... For example, if you measured your fiberglass insulation to be 9” deep, your current attic insulation R-value would be an R-26 and would require an additional 3.5” of insulation at minimum throughout just to meet the R-38 code. The image below is for Fiberglass insulation only.Installing attic insulation is one of the best ways to control energy consumption and costs. Learn how to insulate an attic by yourself. ... Depth of Expanding Fiberglass Insulation: R-Value: 7 inches: R-19: 9 inches: R-25: 11 inches: R-30: 13 inches: R-38: 15 inches: R-44: 17 inches: R-49: 20 inches: AttiCat insulation maintains R-value over time and provides temperature and sound control. The attic is 1 of the easiest places to add insulation to improve the comfort and energy efficiency of your home. AttiCat Expanding Blown-In Insulation is designed for your attic insulation project in new or existing homes. New York State Building R-value Code Insulation Requirements. New York State Building R-value Code Insulation Requirements. on exterior walls, from R-13 to R-25, plus Attic insulation R-49 to R-60. Existing Attic R-38. As you’re getting ready to insulate your home, one of your first questions will most likely be, “How much insulation do I ...All these have R-values ranging from R-3.2 to R-3.8 per inch. The R-value of closed-cell foam is R-6.5-7 per inch. Contractors often use it to insulate under slabs, ceilings, walls, and roofs. It performs better than other insulation types. It provides an excellent air barrier, resists moisture, and retards vapor.It costs two to three times more than fiberglass batt insulation. But the roof is a major pathway to heat loss—and gain—so it’s worth shelling out the extra bucks for spray foam. It forms a much tighter air barrier, and you’ll get the same R-value with fewer inches of the stuff, so you’ll have extra room overhead. 8.Different areas of your home have different R-value recommendations, and homes in different areas of the country have different recommendations based on the climate and cost effectiveness of the …The biggest upside to this insulation is the R-value, which is the highest overall. As such, it’s a popular option for roof insulation in an attic. However, rigid foam board is also one of the more expensive insulation options. Pros of Rigid Foam Board Insulation. High R-value up to 8.0. Moisture-resistant. Cons of Rigid Foam Board …R-value measures how well certain building insulation materials, such as foam insulation, can resist heat. The higher the R-value, the greater the performance ...Step 4 for loose-fill insulation. 4. Determine the attic insulation area; based on the spacing of the joists, order sufficient insulation for the attic. Refer to the MEC for the R-value for your area. It is important to cover the top of ceiling joists or bottom cord of truss with insulation. 5. Obtain complete coverage of full-thickness, non-

Since most common insulation types (fiberglass, cellulose, mineral wool) have an R-value of about 3 – 3.5 per inch it is easy to estimate how much R-value the insulation your attic currently has. Just take the depth in inches x 3 to get an estimated value. If you live in the Southern part of the U.S., the recommended insulation level is a minimum of R-38 or …. Chachos nachos

Blown-In Attic Insulation Costs. Blown-in attic insulation costs range between $500 and $2,100 per 1,000 square feet of space, for materials alone. Labor increases costs to $1,500 to $3,100 for ... 2 inches of fiberglass bat insulation can add R7.4 to the attic (R3.7 per inch). To reduce both heating and cooling costs, the US Department Of Energy (DOE) published attic insulation recommendations based on location in the US. Recommended R-values for the attic range from R30 to R60. Here is the full DOE’s recommended attic insulation R ... R-Value. Insulation is important because of its ability to reduce the amount of heat that flows between the inside and outside of your home. The ability of insulation …Jan 13, 2019 ... In general, an attic's R-value should be between R-30 and R-49. In particularly cold climates, you might go up to R-60. Let's say the ... Sacramento and most of California are in Zone 3, which requires attic insulation with an R-value between 30 and 60. On this chart, each part of the country is divided into different zones and each zone has a recommended R-value. We can see that Sacramento and most of California are in Zone 3, which requires attic insulation with an R-value ... Step 4 for loose-fill insulation. 4. Determine the attic insulation area; based on the spacing of the joists, order sufficient insulation for the attic. Refer to the MEC for the R-value for your area. It is important to cover the top of ceiling joists or bottom cord of truss with insulation. 5. Obtain complete coverage of full-thickness, non-The thickness of R-19 insulation is 6.25 inches. R-value measures how effectively a specific kind of insulation blocks the transfer of heat. The two main types of insulation are ba...An R-value is a measure of a given material's thermal resistance, or its ability to inhibit warm air movement toward colder spaces. Often, manufacturers stamp R-values on the paper side of fiberglass batting insulation. Find the printed value, and you know the R-value in the attic. However, the R-value of loose-fill insulation or multiple ...R-Value. Insulation is important because of its ability to reduce the amount of heat that flows between the inside and outside of your home. The ability of insulation …Rather than finding insulation with an R-value of R38 per inch of thickness, you simply need to have enough inches of insulation to equal the recommended R-value. If your attic has, say, 12 inches of …Aug 10, 2020 · According to Green Builder magazine , some brands of attic door insulation can cut air infiltration by 70 percent. Priced at under $150, they can reduce heating or cooling loss in a home by 20 percent annually. In a home with a $3,000 annual heating bill, that’s a savings of $600 in the first year alone. Here is the shortlist of all the types of insulation used in residential properties: Insulation Type 1: Blanket insulation (batts and rolls). Most common insulation type, made out of fiberglass, used in walls, attics, …Our R value guide to rigid insulation includes the DOE's recommended insulation by zone chart, R value calculator and base building material R values chart. ... Uninsulated Attic Existing 3-4 Inches of Insulation Uninsulated Floor Uninsulated Wood-Frame Wall Insulated Wood-Frame Wall 1 R30 to R49 R25 to R30 R13 * N/A 2Feb 3, 2021 ... The Right Insulation R-Value Changes Based on Where You Live · An R-value of 38 if the home uses electric heating, oil-fired furnaces, or ...An R-value of 38 if the home uses electric heating, oil-fired furnaces, or baseboard heating. An R-value between 30 and 38 if the home uses natural gas …Sealing and Insulating are often the most cost-effective ways to make a home more comfortable and energy efficient — and you can do it yourself with guidance from ENERGY STAR. Use This Guide To: Learn how to find and seal hidden attic and basement air leaks; Determine if your attic insulation is adequate, and learn how to add more;.

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