Cover sheathing with shingle underlayment felt.
Roof underlayment nailing pattern.
Check the nailing surface is level.
In most cases 4 nails are adequate.
Roof and wall sheathing 8 10d every 4 6 on the seams and 8 12 in the field.
Drywall ceiling boards require 1 drywall screws every 6 8 while wall boards require drywall screws every 6 8 on the seams and 10 12 in the field.
Wear safety glasses when nailing the plywood to protect your eyes from any debris.
Two layers of felt underlayment.
Try to create a random pattern with the nails so they will not appear in a regular pattern through the flooring.
For the lower portion of the roof especially the part that overhangs the eaves and is susceptible to ice dams it is a good idea to apply self stick waterproof shingle underlayment wsu also called ice guard.
These are 1 5 inches long plenty long to drive through that over sized over thick underlayment.
One layer of felt underlayment high wind regions.
For example inch underlayment.
Always check for a level nailing surface.
Ventilate the roof according to current building codes.
The nailing schedule will vary with the thickness of the underlayment so refer to an underlayment nailing schedule chart to get the right schedule for your job.
Position the nails appropriately according to the shingle installation instructions.
Put each nail about 4 inches apart along the edges and 6 inches apart across the remainder of the plywood.
These are 1 25 inches long and can be used for underlayment that ranges up to 1 2 thick.
Properly fasten panels including fastening and spacing hints step 4.
Each row of nails that are 24 on center should be approximately 12 from the outside edge of the roll.
Install shingles according to manufacturer recommendations step 1.
Align shingles properly to avoid nail exposure.
Shingles six roofing nails or staples per shingle.
Nail metal drip edge flashing which bends over the roof and down the edge of the facing board on all roof edges.
For duration series shingles owens corning recommends using either a 4 or 6 nail fastening pattern depending on the roof s slope and building code requirements.
One layer of felt underlayment all other regions.
Roofhelp has two ways of nailing the felt one for high wind regions and one for all other regions.
If you so happen to have thicker underlayment 3 4 inch or more then use 4d ring shank nails.
Pick up packs of 3d ring shank nails.
Tab shingles need two nails on each side of the tab.
