Is Lap Siding Put Over Osb

If you re wondering why the roofers can t just install new shingles and roofing accessories over your existing roof deck this article will guide you through one of the most common reasons.

Is lap siding put over osb.

On thick profiles of siding nails may be hidden meaning they are driven into the upper portion of a board so they are covered by the lower part of the board above it. But the size of the roof overhang the species of siding and whatever sealer stain or oil used wood be big factors in the duability of the install. It comes in a variety of finishes made to resemble various hardwoods and stucco surfaces. Oriented strand board or osb is a siding product sold in sheets or laps depending on preference.

Yes you may be able to save some money by not removing the old siding but that old siding could be hiding problems that may. Or directly to minimum 7 16 thick osb sheathing. Hardiplank lap siding can be installed over braced wood or steel studs spaced a maximum of 24 o c. As its name lap implies an upper siding board laps over the board below it by 1 to 2 inches.

Your roof deck may be shiplap. When considering plywood for sheathing builders choose from 1 2 inch cdx common construction grade material or 1 2 inch pressure treated plywood. Most lap siding is beveled meaning that the bottom edge is thicker than the top. Hardiplank lap siding can also be installed over foam insulation up to 1 thick irregularities in framing sheathing and or foam insulation can mirror through the finished application.

If you re replacing your cedar shakes roof check out our discussion of re sheeting over skip sheathing. However if you re interested a residing project offers the perfect time to examine your home s weather barrier and exterior insulation and improve it if need be. Even though most reputable contractors will never install siding over existing siding there are knuckleheads out there that will say you can do it and it s not a problem. In the end the decision to install house wrap under your siding is a personal one that you should make after discussing it with your contractor.

Why siding over existing siding is a bad move. There are two options for this. Remove the siding and install oriented strand board commonly referred to as osb or to use the existing siding that s on the house now as substrate or layer beneath the top surface underneath the hardieplank siding.