Whether or not there is an inner roof lining and the total thickness of the roof structure.
How to insulate a attic roof.
How to insulate a finished attic.
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.
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.
With a finished attic insulation must help keep the attic areas comfortable.
Then blow another layer on top of the roof rafters.
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.
That means insulating the attic floor only not the walls and having vents in the roof.
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.
Insulate your attic to keep your heating and cooling from going through the roof along with your monthly budget.
Box out light fixtures.
Before insulating seal any air leaks and make roof and other necessary repairs.
Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well.
Water is insulation s enemy.
If your attic is often used or perhaps you plan to convert it in the future you will need to insulate the inner surfaces of the roof.
By steven fox photo.
You may also insulate your roof to help regulate the temperature in an attic that is a part of your living space.
Insulating the roof is a priority if the ceilings of your home happen to be part of the roof deck as is the case with cathedral ceilings.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.
The technically correct approach depends on a number of factors.
Insulating the pitched roof.