Attic Insulation Installed Upside Down

And that s what s going on when you attempt to hang faced fiberglass.

Attic insulation installed upside down.

Before installing determine the insulation material best suited for your home. Calculate how much you need. If you want to add foil insulation to an existing roof you can still do it by going into the attic and. If your crawlspace looks like this fear not.

Just buy un faced batts install them to grade 1 and build your air and moisture control systems in another layer big separate discussion. Moisture from inside the house can now accumulate in the insulation which will drastically reduce the r value. You don t say what r value the insulation has but chances are it s adequate for a floor in your climate zone. These thermal defects undermine the r value of your attic insulation.

In an upside down installation where the paper faces the unheated portion of the home moisture from the humid inside air can condense and become trapped inside of the insulation during cold winter months. So i am not sure which way to install the new insulation. The shower has two outside walls. This will likely result in fungal growth mold and rot.

For proper installation of roof insulation you need to do it before the roofing goes on. R value simply means resistance to heat flow. Check pipes and vents. Choose your insulation type.

I live in the sacramento valley area which gets very hot and dry in the summer doesn t get to cold in winter but foggy damp days in the 30 3 and 40 s. Simple thermal analysis reveals that if you have 5 missing insulation in an attic bare sheetrock you ll have a slightly more than a 54 drop in r value. I have install new insulation becasue of a valve leak got the old stuff wet.