Polystyrene Insulation Roof Rafters

It provides r values that range from 3 6 to 4 2 per inch.

Polystyrene insulation roof rafters.

Feature excellent break resistance and lightweight rigidity for ease of installation. Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect. One common use of extruded polystyrene foam board is for foundation insulation panels. You can use batts polystyrene slabs expanded polystyrene or spray foam to insulate your roof or loft space.

Its versatility is the key to its popularity whether being used to achieve. Fit 24 rafters or snap in half for 16 or 12 rafter spacing. Some products have reinforced facing to make them sturdier. Choose this option for areas that need a good amount of strength and water resistance.

Also called styrofoam insulation this is the least expensive material. An efficient room in a roof in a new build property where over rafter insulation is not desirable. It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat. The insulation is installed under the roof in the slope.

This is an even more dense and more expensive foam board insulation. In this blog post we will be looking at insulating pitched roofs and why putting insulation just between the rafters isn t a viable solution.