Roof Change Plywood

Inspect the underlying roof sheathing for damage and make any needed repairs.

Roof change plywood.

If your roof carries a heavier load like if there s less pitch and or it snows in your area a roofer may recommend the use of the inch variety. A half inch cdx plywood is often used with rafter with 24 inch spacing. Secure the plywood by inserting six penny nails along the rafters spacing them every 6 inches. Rotted plywood can cause a number of issues.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Loads will vary with the pitch of the roof. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood. Rotted plywood cannot support the weight of a roof the way healthy wood can nor can it safely grip the nails put into the roof and keep them held firm.

Place a new plywood board in the same location ensuring the ends align over roof rafters. Hammer down any large nails that are exposed by the removal. This is a popular option because it presents homeowners with functional but affordable roof sheathing. Step 6 unroll new roofing felt over the new plywood and extend it at least 3 inches over each edge of the new plywood.