Eps In Attic

Let s have a look at what rigid foam is and the different types some tips on installing it and special considerations to keep in mind.

Eps in attic.

Expanded polystyrene insulation more commonly referred to as eps is a closed cell insulation that has been around since the 1950 s. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. Eps is used under roofing over foundation walls and beneath siding. According to the epa insulating the attic could save you an average of 15 of your costs for cooling and heating your house.

To do that without creating soggy roof sheathing from wintertime moisture accumulation in us climate zone 6 you need a minimum of half the total r value to be on the exterior r25 in exterior foam out of a total code min r49. Use eps to increase r value in the attic within wall cavities or on the roof but avoid using this product below grade unless it s protected by a moisture resistant film or coating. Eps is made of 98 trapped air and only 2 plastic making it an efficient insulator with a small amount of raw material. Eps is also the most inexpensive of the three types of rigid foam insulation while also meeting the required building and energy codes.

It can be applied on the roof floor and walls and it s most widely used in structural insulated panels and insulated concrete forms. This is the same stuff your disposable coffee cup and is made out of and it s used to protect fragile items in their packaging.