Putting R30 In An Attic

In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment.

Putting r30 in an attic.

Typically houses in warm weather states should have an r 38 insulation in the attic whereas houses in cold climates should have r 49. If you have a fan pull down stairs or other fixtures in the attic they also need to be. You need to make sure that ductwork is properly sealed to prevent moisture build up in the attic. 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.

Inspecting your attic insulation. I ve always said adding insulation to your attic is some of the best money you can spend to make your house more energy efficient but whether to use faced or unfaced insulation is a great question. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Wall insulation whenever exterior siding is removed on an.

Now here s a situation where a homeowner what looks like many years ago added insulation they added a three inch layer but. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. 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. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

This old house general contractor tom silva and host kevin o connor demonstrate the proper way to insulate an attic. Better than spray foam thermal break and relatively consistent r 30. These insulation levels will keep heated air from migrating out in winter. For loose fill cellulose this translates to a total depth ranging from 8 inches.

See below for a shopping list and tools. Here s how to use 3 layers of 2 inch polyiso foam board to meet code and keep your ne. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.