Roof Insulation Level

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Roof insulation level.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Inspecting your attic insulation. The table below shows what levels of insulation are cost effective for different climates and locations in the home. The higher the r value the better the thermal performance of the insulation.

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. R value is a measure of insulation s ability to resist heat traveling through it. 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. Rigid foam panels are available in thickness.

Insulation level are specified by r value. Use rigid foam insulation panels on your flat roof before applying the final roof covering or inside the house before adding sheetrock or paneling. Upgrading existing roof insulation.