Polystyrene Insulation Roof Rafters

Fit 24 rafters or snap in half for 16 or 12 rafter spacing.

Polystyrene insulation roof rafters.

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. Are made of extruded polystyrene foam so they ll stay in place over time and will not rot or deteriorate. One common use of extruded polystyrene foam board is for foundation insulation panels. 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. It provides r values that range from 3 6 to 4 2 per inch. Choose this option for areas that need a good amount of strength and water resistance. The general advice we give is that you should always insulate between and above the rafters or between and under the rafters on our u value calculator we don t give an option for putting insulation between the rafters.

Its versatility is the key to its popularity whether being used to achieve. You can use batts polystyrene slabs expanded polystyrene or spray foam to insulate your roof or loft space. Some products have reinforced facing to make them sturdier. This is an even more dense and more expensive foam board insulation.

Feature excellent break resistance and lightweight rigidity for ease of installation. You should leave the space under the roof tiles free from insulation to give adequate ventilation so that you don t get condensation or water coming through the tiles.