We ll add a vapor barrier so the moist air does not flow up through the insulation and condense on the roof.
Roof sheathihng air flow corrugated.
As the roof is not flat i e.
Drive a pair of 8d nails through the wood.
Allowing air to flow in and out of the attic space protects roof shingles and prevents moisture buildup and mold growth improving overall energy efficiency of the home.
Most metal shingles will be attached to the roof using metal shingle clips but metal roofing shingle installation can be system specific.
Best seller suntuf 26 in.
Use the lower edge of the roof as a guide and install nailers end to end across the roof with the lower edge two inches from the edge of the roof.
Keep the inside of the shed dry the shed has an integral steel base.
This provides a 1 1 2 high air space above the rafters permitting air to flow along the under side of the roof decking.
Roof pitch the roof slopes at 12 5 degrees and is not corrugated.
The only source of water is from the air and also when i put away damp garden.
For this design to work well on a low sloped not dead flat roof an outside air inlet is provided by a soffit or roof overhang built at the low end of the roof and a roof cavity air vent outlet is provided along the high or up slope end of the roof using a built up half ridge vent.
There s a growing trend among builders concerned about air leakage to establish the air barrier at the exterior wall and roof sheathing.
Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty.
Full insulation coverage accuvent allows insulation to be packed out over the top plate and keeps it in place preventing the insulation from drifting into the soffit openings.
In the summer your roof is going to get plenty hot to evaporate what little moisture manages to get by your roof.
Traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point.
Same for a path for drainage.
Most people consider the air flow at the raised ribs to be adequate although i ve heard of schemes to leave gaps in purlins stagger purlins etc.
Typically this requires sealing the seams of the osb or plywood sheathing with tape either peel and stick tape or the proprietary zip system tape from huber.
No water from the ground is getting in here.
Polycarbonate corrugated roof panel in solar grey.