Attic Insulation Roof Or Floor

Insulating the floor is standard practice for an unfinished attic space.

Attic insulation roof or floor.

A sealed attic or insulation at the roof of a building offers distinct advantages in terms of energy efficiency according to the florida solar energy center. However it is the most labour intensive and most expensive option. The higher the r value the better the thermal performance of the insulation. What are the advantages of roof insulation.

I must assume that michael s comment that it s usually much easier to get a good thermal envelope at the roof plane than at the attic floor is directed at airtightness rather r value. The advantage of this approach is that the heat that is generated and circulated in the floors below is not lost through the attic floor into the rooms above. Unless in air conditioned attics insulation is typically installed on the ceiling plane not on the sloped roof assembly. It s more effective and easier to install insulation on the attic floor than in the roof assembly.

The third major issue is the value of the attic space. Attic vents are typically installed in the soffit along the underside of the eave along the ridge of the roof or on the gable end of the house. Insulating the floor and the roof this is certainly the most interesting solution when the attic is also going to be used. Insulation level are specified by r value.

Roof insulation is no contest. R value is a measure of insulation s ability to resist heat traveling through it. The exception to this rule takes place when families opt to convert an unfinished attic space into something usable or livable. When you are done you should have a carpet of insulation on the floor.

If you do need to install insulation in the roof assemblytake into account some rules. Modern technology of blanket insulation today is considered the best insulation for attic. Rolls and batts are produced of mineral wool and fiberglass. In this context the decision regarding attic floor vs.

If you choose to install cellulose yourself you can buy the insulation in bags from your local home improvement store. You should top off the insulation in the floors if it is cellulose or replace it with new fiberglass batts if what is there isn t adequate. The table below shows what levels of insulation are cost effective for different climates and locations in the home. Pros and cons of cellulose attic insulation cellulose recycled ground up paper with boric acid added for insect control and fire resistance offers a better attic insulation option than batts.

Roof deck insulation not so much. Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc. If you want additional insulation you can cover the entire floor of the attic with rolls or batts of unfaced fiberglass insulation. Slab on grade homes located in hot and humid climates have air conditioning ducts located within the attic of the home.