Roof Change Plywood

Rotted plywood can cause a number of issues.

Roof change plywood.

Place a new plywood board in the same location ensuring the ends align over roof rafters. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood. Step 6 unroll new roofing felt over the new plywood and extend it at least 3 inches over each edge of the new plywood. Hammer down any large nails that are exposed by the removal.

Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents. Loads will vary with the pitch of the roof. A half inch cdx plywood is often used with rafter with 24 inch spacing. Most roofs will be sheathed in plywood at least 3 8 inch thick.

Inspect the underlying roof sheathing for damage and make any needed repairs. 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. 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. Secure the plywood by inserting six penny nails along the rafters spacing them every 6 inches.