Differences In Insulation For Attics

10 of your home heating bill costs stem from uninsulated floors.

Differences in insulation for attics.

Some installations can yield a higher r value than traditional batt insulation for the same thickness and can fill even the smallest cavities creating an effective air barrier. However building codes only require an r 38. Insulation level are specified by r value. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Both can be added to uninsulated attics or layered over existing material. The higher the r value the better the thermal performance of the insulation. This type of insulation. In the baltimore area the u s.

Blown in insulation requires the least amount of work but requires special tools and equipment. Fiberglass insulation is calculated based on the number of batts or rolls you need. R value is a measure of insulation s ability to resist heat traveling through it. Batt spray and blown.

Closed cell and open cell aka 2 pound and pound respectively. When air can t move through it you have zero heat transfer through convection. There are different types of attic insulation and they each have their pros and cons. Department of energy recommends r 49 attic insulation.

Spray foam offers the best attic insulation performance available. Some types of insulation are found in older homes and some of them may no longer be used. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Attic insulation is measured by an r value which indicates how insulation controls the flow of heat and cold through your home.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Loose fill or batt the common term for blanket insulation. Insulating basement walls or slab foundation can reduce heating costs by10 to 20.

Wall insulation can reduce a home s heat loss by 67 while attic insulation can lead to a 40 decrease in heating and cooling costs. Choose from two types. For diy attic insulation you ve got two choices. Blanket insulation is available as batts or rolls and is the easiest diy insulation material.

Cellulose insulation is calculated based on the depth of the blown in insulation. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. Fiberglass insulation in rolls or batts can be easily added by the homeowner. Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage.