Roof Underlayment Nailing Pattern

Cover sheathing with shingle underlayment felt.

Roof underlayment nailing pattern.

Each row of nails that are 24 on center should be approximately 12 from the outside edge of the roll. One layer of felt underlayment all other regions. Two layers of felt underlayment. Roofhelp has two ways of nailing the felt one for high wind regions and one for all other regions.

Pick up packs of 3d ring shank nails. In most cases 4 nails are adequate. Check the nailing surface is level. One layer of felt underlayment high wind regions.

Shingles six roofing nails or staples per shingle. If you often experience winds of 50 mph or more you should seriously consider the high wind method of nailing. Properly fasten panels including fastening and spacing hints step 4. 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.

These are 1 5 inches long plenty long to drive through that over sized over thick underlayment. Put each nail about 4 inches apart along the edges and 6 inches apart across the remainder of the plywood. Try to create a random pattern with the nails so they will not appear in a regular pattern through the flooring. Install shingles according to manufacturer recommendations step 1.

Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive. 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. Nail metal drip edge flashing which bends over the roof and down the edge of the facing board on all roof edges. 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.

Fasten drip edge on eaves with galvanized nails and a hammer about 12 inches. Wear safety glasses when nailing the plywood to protect your eyes from any debris. 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. For example inch underlayment.

Position the nails appropriately according to the shingle installation instructions. If you so happen to have thicker underlayment 3 4 inch or more then use 4d ring shank nails. Ventilate the roof according to current building codes. Align shingles properly to avoid nail exposure.

Always check for a level nailing surface.