Cut the ventilation opening.
Roofing nail length for ridge vent.
Also great for application of shingles over rigid foam insulation into roof decking and for the installation of ridge vents.
A premium rigid style vent with 3 76 mm ring shank nails that helps exhaust heat and moisture from your attic available in warmer climates.
Full round heads are recommended to avoid head pull through.
On the roof on my rental property removed the ridge vent in favor for turtle vents.
Wood shakes minimum 3 4 sheathing wood shakes nail type minimum length 18 straight split 5d box 1 3 4 18 and 24 handsplit and resawn 6d box 2.
This gives you 450 square inches of total exhaust.
Nail the ridge cap shingle five and five eighths inches above the butt edge one inch in from each edge.
Apply the subsequent cobra 4 1 21 m plastic ridge vent sections over the length of the ridge using the overlap underlap tabs figure g.
An 8d nail 2 5 inches long is the minimum size nail to use for fastening sheathing panels.
To calculate an example of exhaust and intake use 25 feet of roof ridge vent.
Multiply it by 18 square inches the net free air per foot of ridge.
Install the ridge vent shingle over style install the ridge vent aluminum.
Nails must always penetrate through plywood and osb decks or at least 3 4 19 mm into wood planks.
More than 1 layer of roofing not recommended over 3 8 sheathing.
If your decking is less than 3 4 inch then a 1 1 2 inch nail will suffice.
Install new field shingles.
Since exhaust and intake must be equal 450 square inches of total intake is required as well.
Start by removing the nails holding the ridge cap shingles in place.
I only use airvent certianteed ridge vent with 2 5inch hand nails.
These extra long asphalt shingle nails are designed for the application of structural roof deck to wood trusses or rafters.
Remove the shingle caps.
There s no vault so no need for that ugly ridge vent.
Vents evenly spaced underneath the roof provide intake.
For dimensional shingles being installed over a layer of existing dimensional shingles you should always use a 1 1 2 inch roofing nail.
Would much rather put down metal lomanco s though.
For most asphalt shingle ridge caps there are two.
A premium rigid style vent with 3 76 mm ring shank nails that helps exhaust heat and moisture from your attic available in warmer climates.
Large heads prevent pull through.