Eps In Attic

In new construction the best use of eps in attics would be to put in on the exterior of the roof deck making it a conditioned attic.

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. 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. It can be applied on the roof floor and walls and it s most widely used in structural insulated panels and insulated concrete forms. Eps is used under roofing over foundation walls and beneath siding.

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. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. 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 is made of 98 trapped air and only 2 plastic making it an efficient insulator with a small amount of raw material.

It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. Eps is by far the most versatile of the three rigid insulation options.