Roof Insulation Level

R value insulation chart find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Roof insulation level.

Hitting amazing levels of 0 13w m will need 300mm of mineral wool or 180mm of rigid foam. R value is a measure of insulation s ability to resist heat traveling through it. Upgrading existing roof insulation. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Rigid foam panels are available in thickness. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation. Inspecting your attic insulation.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Insulation level are specified by r value. The higher the r value the better the thermal performance of the insulation.