It needs a certain amount of loft to work properly.
Old attic walls paper.
One of the more sophisticated products lately is spray foam insulation.
Always use unfaced batts both when laying product for the first time and to prevent moisture from becoming trapped between new and old layers of insulation.
If building a knee wall for storage like karl did with this project make sure to insulate that area as well.
I see this mistake all the time tom says.
Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer.
Don t mash or compress the insulation into the space.
How to replace it.
If faced i assume the paper side would be against the wall.
As we mentioned at the beginning insulation has come a long way in the past several years.
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Roll out the insulation and fit it between attic floor joists which are also the ceiling joists for the room below.
Doubled vapor barriers in attic.
Can the knee walls of rooms next to an attic be insulated with r 13 fiberglass faced or in faced.
The loose blown in rock wool was used mainly in attics while.
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Rock wool has been used as insulation since the late 1800s and was popular as both blown in and batting insulation during the 1950s.
As you add the insulation keep the paper backing facing down toward the.
Use r 30 insulation for the ceiling and r 13 for the walls.
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Can i put the peper face against the outside wall and the second piece put fiberglass sides together so the paper face of the inside paper is against the sheet rock.
Laying a second layer of fiberglass batts in the attic is an easy way to boost r values.
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Thomas boni december 8 2018 at 3 59 pm.
You can buy them unfaced or simply remove the paper or foil backing.
But if the new layer has a kraft paper backing it can trap moisture and turn the layers underneath into a soggy mess.
Now that we know the old attic insulation types on the market the question is whether there is a newer more modern alternative available.