Step 2 install insulation boards.
How to install insulating foam board in an attic.
If it fits proper with no space between on either side of the board pick it up and put a thin layer of glue on.
If you plan on finishing your attic then you cannot install it directly.
Foam insulation boards can be attached to concrete walls as well and in such a case care should be taken not to chip the cement.
Remove any existing pieces of insulation that might have been covering the attic walls until now.
Remove the old insulation boards carefully without causing any damage to the walls.
Your board must leave at least inch gap between the board and the roof.
Put the board between the rafters.
No matter how much insulation you add to your home s walls floors and ceilings you re throwing your money away if you don t insulate your attic.
Do not nail the board into the roof.
Next you will need to place the foam board insulation between each joist as a test.