Putting R30 In An Attic

In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.

Putting r30 in an attic.

Drill holes in the sheathing and blow insulation into the empty wall. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment. Now here s a situation where a homeowner what looks like many years ago added insulation they added a three inch layer but. Better than spray foam thermal break and relatively consistent r 30.

This old house general contractor tom silva and host kevin o connor demonstrate the proper way to insulate an attic. For loose fill cellulose this translates to a total depth ranging from 8 inches. 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. These insulation levels will keep heated air from migrating out in winter.

You need to make sure that ductwork is properly sealed to prevent moisture build up in the attic. Wall insulation whenever exterior siding is removed on an. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home.

See below for a shopping list and tools. 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. You need to insulate the attic even if you can t easily access it because it s a huge risk for air leaks and potential heat loss. Inspecting your attic insulation.

Typically houses in warm weather states should have an r 38 insulation in the attic whereas houses in cold climates should have r 49. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Here s how to use 3 layers of 2 inch polyiso foam board to meet code and keep your ne.