Differences In Insulation For Attics

However building codes only require an r 38.

Differences in insulation for attics.

Batt spray and blown. It s available in fiberglass mineral wool plastic fibers and natural fibers. Both can be added to uninsulated attics or layered over existing material. Department of energy recommends r 49 attic insulation.

When installed properly both types of insulation fill all of the nooks and crannies in a space and make for a perfect air barrier. The table below shows what levels of insulation are cost effective for different climates and locations in the home. 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. In the baltimore area the u s.

Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage. 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. Closed cell and open cell aka 2 pound and pound respectively.

Blanket insulation is available as batts or rolls and is the easiest diy insulation material. Blown in insulation requires the least amount of work but requires special tools and equipment. For diy attic insulation you ve got two choices. Fiberglass insulation is calculated based on the number of batts or rolls you need.

When air can t move through it you have zero heat transfer through convection. There are three common attic insulation types used today. Insulation level are specified by r value. Attic insulation is measured by an r value which indicates how insulation controls the flow of heat and cold through your home.

They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. There are different types of attic insulation and they each have their pros and cons. R value is a measure of insulation s ability to resist heat traveling through it.

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. This type of insulation. 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.

Fiberglass insulation in rolls or batts can be easily added by the homeowner. Cellulose insulation is calculated based on the depth of the blown in insulation. Some types of insulation are found in older homes and some of them may no longer be used. Loose fill or batt the common term for blanket insulation.