Putting R30 In An Attic

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.

Putting r30 in an attic.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Wall insulation whenever exterior siding is removed on an. See below for a shopping list and tools. If you have a fan pull down stairs or other fixtures in the attic they also need to be.

Here s how to use 3 layers of 2 inch polyiso foam board to meet code and keep your ne. For loose fill cellulose this translates to a total depth ranging from 8 inches. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. Inspecting your attic insulation.

Drill holes in the sheathing and blow insulation into the empty wall. Better than spray foam thermal break and relatively consistent r 30. Typically houses in warm weather states should have an r 38 insulation in the attic whereas houses in cold climates should have r 49. 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.

Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. This old house general contractor tom silva and host kevin o connor demonstrate the proper way to insulate an attic.

Now here s a situation where a homeowner what looks like many years ago added insulation they added a three inch layer but. 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. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.