Differences In Insulation For Attics

Spray foam offers the best attic insulation performance available.

Differences in insulation for attics.

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. They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. 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. Department of energy recommends r 49 attic insulation. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Fiberglass insulation is calculated based on the number of batts or rolls you need.

When installed properly both types of insulation fill all of the nooks and crannies in a space and make for a perfect air barrier. R value is a measure of insulation s ability to resist heat traveling through it. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Insulating basement walls or slab foundation can reduce heating costs by10 to 20.

In the baltimore area the u s. 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. Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage.

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. When air can t move through it you have zero heat transfer through convection. There are three common attic insulation types used today. Choose from two types.

Fiberglass insulation in rolls or batts can be easily added by the homeowner. 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. For diy attic insulation you ve got two choices. 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.

Blown in insulation requires the least amount of work but requires special tools and equipment. Attic insulation is measured by an r value which indicates how insulation controls the flow of heat and cold through your home. Batt spray and blown. However building codes only require an r 38.

Closed cell and open cell aka 2 pound and pound respectively. Loose fill or batt the common term for blanket insulation. It s available in fiberglass mineral wool plastic fibers and natural fibers. 10 of your home heating bill costs stem from uninsulated floors.