gion, fastening in a 3-inch on-center spacing is prescribed. In the 150-mph region, fastening in a 3-inch on-center spacing using 10d ring shank nails is prescribed. Closing thoughts APA Data File Form No.T325D provides updated fastener schedules for plywood and OSB structural panel sheathing used for roof decks of steep-slope roof assemblies.
I decided to just use 5/16 plywood. The same procedure as the outside was used. Cut window holes with circular saw, add liquid nails to panel, attach panels to I also added a 4x8 osb to the floor on the interior. The plywood alone felt too springy, so the OSB was added for support and ground insulation.
**PRICES ARE SUBJECT TO CHANGE** Thickness and species may be mixed for 3+ pricing. All plywood is sold in full sheets. Plywood sheets are 4' x 8'.
Birch Plywood (Class 3) Manufactured from a dense timber species Birch Plywood is a high quality, multi-ply hardwood panel, offering consistent strength, fine grain texture and ease of finishing. The multiple veneers which make up this plywood, increase its structural stability as well as offering a first-class face finish.
3/8 8 x 4 on grade Bending Lauan (4′ high barrel) Plywood $ 28.95 ADD TO CART; 1/4 4 x 8 Meranti Exterior Lauan Non-Warranted Underlayment Plywood $ 14.95 ADD TO CART; 3/8 4 x 8 Interior Lauan Non-Warranted Underlayment Plywood $ 22.95 ADD TO CART; 1/4 4 x 8 Revolution Ply Underlayment Plywood $ 16.95 ADD TO CART