Using Treated Plywood For Siding

When considering plywood for sheathing builders choose from 1 2 inch cdx common construction grade material or 1 2 inch pressure treated plywood.

Using treated plywood for siding.

Rb b siding has a channel of 1 1 2 wide groove every 12 on center to mimic the bat and board appearance used on many barns and other rural buildings. Where to use pressure treated wood. This means posts in contact or buried underground obviously but it also includes any lumber touching concrete or masonry since it s porous and wicks water like a sponge. You can use any panel thickness with a span rating for 16 spaced studs but with 24 studs use a panel with a roof span rating of 24 or more.

You also need a clean paintbrush to apply the sealer. Things you need to keep in mind when you re working with plywood. Pressure treated plywood usually has a greenish hue and a slightly oily surface. These nails include stainless steel ones or galvanized nails with stainless steel ones being the more expensive option.

Treated siding from a source you know and trust. Try looking for apa rated sheathing c d exterior plywood. Wood for any outdoor project should be pressure treated. While many homeowners wonder if they should use pressure treated wood for a specific project the answer is simple.

For applying a sanding sealer a dust free and clean area is required. With the help of a clean paintbrush sanding sealer is applied on the plywood in even and leveled brush strokes to coat the surface. Given that pressure treated plywood has a bunch of chemicals added to it you will need to use nails and fasteners that are made to withstand those chemicals. The sawdust from pressure treated wood is an irritant to the eyes skin and nose.

Plywood for siding is not the type of exterior grade plywood you might use for sheds. Both are pressure treated for long term protection against rot fungal decay and termite attack and feature evenly spaced channels across the length of the board. Wood for indoor projects should be left as is. Manufacturers produce it by infusing regular plywood with chemicals under pressure to give it added resistance to mold and mildew.

Treatment chemicals include chromated copper arsenate cca ammoniacal copper quat acq copper azole ca and safest of all borates. Home grade exterior plywood siding has a rough sawn textured appearance and its edges are ship lapped to allow for a tight fit. Two of the most popular items for decorative siding are reverse board and batten rb b and t1 11. Use pressure treated wood in any situation where there s direct contact between the wood and anything that could supply moisture.