Attic Insulation Zone Map

Add r5 to r6 insulative wall sheathing beneath the new.

Attic insulation zone map.

How much attic insulation you need. Add r5 insulative wall sheathing beneath the new siding. Insulation zone map lack of the floor attic insulation house top floor ceiling or inadequate amount of the insulation are definitely some of the most important reasons responsible for migration of conditioned hot or warm air into the attic. Add r5 insulative wall sheathing beneath the new siding.

The map and chart below show the approximate amount of attic insulation you should have based on the zone in which you live. The second r value for mass walls applies when more than half the insulation is on the interior of the mass. R values for walls represent the sum of cavity insulation plus insulated sheathing if any. Alaska is in zones 7 and 8.

It also suggests. Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. Insulation iecc sections 303 1 4 and 402 insulation r values are minimum acceptable levels and must be determined according to ftc rule. By zone as indicated in the map of the united states.

Chart and image source. For over 50 years insulfoam has been enabling building professionals to construct high quality building insulation systems at a minimal cost. Csl and is the nation s largest manufacturer of block molded expanded polystyrene eps. Department of energy doe and the international energy conservation code iecc.

Whenever exterior siding is removed on an uninsulated wood frame wall. The amount of attic cavity ventilation is specified by numerous ratios of free vent area to insulated ceiling area ranging from 1 150 to 1 600 depending on which building code is consulted the 1 300 ratio being the most common. Wall insulation whenever exterior siding is removed on an. Hawaii is in zone 1 for more specific information check with your town s building department.

Add r5 to r6 insulative wall sheathing beneath the new siding. This map shows thermal recommended levels of insulation for various climate zones based on recommendations from the u s. Recommended levels of insulation. Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and.

The map and chart show each region of the u s the subsequent zones and corresponding r values. Zone attic floor wall uninsulated attic existing 3 4 inches of insulation uninsulated floor uninsulated wood frame wall insulated wood frame wall 1 r30 to r49 r25 to r30 r13.