Minimum Attic Insulation

Residential requirements for insulation are divided by the location in the home.

Minimum attic insulation.

Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. The higher the r value the better the thermal performance of the insulation. Add the right kind of insulation. The change that occurred in the attic insulation in the ontario building code was in the minimum required r value.

The greater the number the greater the resistance to heat movement. The insulation s ability to resist heat flow determines its r value. The recommended r value has been raised from r 50 to r 60 in order to increase the insulation of the attics. R values identify insulation levels.

For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. R 38 shall be deemed to satisfy the requirement for r 49 wherever the full height of uncompressed r 38 insulation extends over the wall top plate at the eaves. According to home advisor insulating your attic can cost between 1700 to 2100. In zone 7 the average minimum requirement for attic insulation is 14 inches of r49 fill.

Pa302 1 ceilings with attic spaces n1102 2 1 r402 2 1. R value is a measure of insulation s ability to resist heat traveling through it. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. R value is a measure of insulation s ability to resist heat flow.

Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13. Insulation levels are specified by r value. The main factors that impact the cost are. 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 greater r values in attics the higher the r value the better the thermal performance of the insulation. Recommended home insulation r values. The department of energy recommends these minimum r values for unfinished unconditioned attics. 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.

Insulation level are specified by r value. Framed wall insulation must meet or exceed r 13. The numbers are based on your house s location and climate zone. These are changes made in order to increase the energy efficiency of the home and thus also save energy.

The higher the r value the better the thermal performance of the insulation. As mentioned please check your local codes and requirements before attempting anything on your own or simply call terminix for a free insulation inspection. The average recommended level is 17 inches of r60.