True but remember this.
Should a porch roof be insulated.
Insulation is intended to either keep our comfort zone warm or cool depending on the place and time of year.
Condensation can cause leaks and unattractive stains on porch.
Cut styrofoam insulation to the correct size and layer it below the fiberglass already in place.
The type of house you describe often has an incomplete air barrier with poor continuity between the wall air barrier and the ceiling air barrier.
Porches are often attached to the house.
Keep you in touch with the outdoors.
An insulated porch roof can provide protection from extreme heat created by the sun s rays bearing down on the roof.
The only time when insulation is installed between rafters is when icynene is used and everything except the attic floor is insulated.
And that will make your patio much more comfortable than it s ever been.
I live in southeast nebraska and i would like to turn an east facing 19 by 8 ft.
The insulation should fit snugly to prevent air from getting through.
Soffit vents are in the under part of the roof overhang.
Insulation works both ways.
Roll out the fiberglass insulation sheets between the joists facing side up making sure it is snugly in place.
A wet roof can cause mold to grow on the underside of the porch ceiling.
Unlike a thin aluminum pan roof an insulated roof will help you keep heat away from your patio.
There is no structure above the roof.
In areas where there is extreme heat an insulated porch roof helps provide the comfort you want as you sit on the porch.
I don t see a way to vent the roof and would like to know if i used r 30 insulation and reflex it vapor barrier with the proper dead air spacing and sealed it so very little if any water vapor could.
It doesn t matter whether the porch is enclosed or open.
The insulation provides a barrier just as it does under the rest of your home s roof.
The temperature will rise on your porch if the roof is not insulated.
Porch roofs can also develop ice dam problems like the rest of the house s roof.
Unless the porch is enclosed like a three season porch there is no reason to install any insulation in the porch ceiling.
These are more difficult to deal with because you need a venting space between the top layer of the insulation and the underside of the sheathing of the roof.
Nail or staple the furring strips between the joists to hold the styrofoam in place.
Already enclosed porch with a concrete floor into a 4 season living space.
If you re willing to invest some more consider an insulated porch roof.
Problems with porch roofs can cause intrusion of water into the interior of the house.