Insulating the pitched roof.
How to insulate a attic roof.
If it is located in a conditioned part of the house also remember to insulate and air seal your attic access.
With a finished attic insulation must help keep the attic areas comfortable.
Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well.
Materials commonly used for the insulation of the roof deck include.
Before insulating seal any air leaks and make roof and other necessary repairs.
The technically correct approach depends on a number of factors.
If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of headroom if you limit yourself to fiberglass batts.
It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow.
You may also insulate your roof to help regulate the temperature in an attic that is a part of your living space.
That means insulating the attic floor only not the walls and having vents in the roof.
By steven fox photo.
How to insulate a finished attic.
Insulate your attic to keep your heating and cooling from going through the roof along with your monthly budget.
To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes.
Whether or not there is an inner roof lining and the total thickness of the roof structure.
Box out light fixtures.
Water is insulation s enemy.
If you have a solid floor covering the roof rafters use the claw end of a hammer to pull the floor up in several locations and blow the insulation under the boards.
Typically you will fill the insulation blower with the insulation and blow it between the attic floor joists.
Then blow another layer on top of the roof rafters.
Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be.