Is Lap Siding Put Over Osb

Why siding over existing siding is a bad move.

Is lap siding put over osb.

It comes in a variety of finishes made to resemble various hardwoods and stucco surfaces. 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. Most lap siding is beveled meaning that the bottom edge is thicker than the top. 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.

If you re replacing your cedar shakes roof check out our discussion of re sheeting over skip sheathing. Or directly to minimum 7 16 thick osb sheathing. 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. 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.

Nailing vertical siding to osb sheathing not a fan of osb except w sips where there s no choice. There are two options for this. Your roof deck may be shiplap. 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.

The main concern to understand is that the hardieplank siding is going to be on the house for. 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. When considering plywood for sheathing builders choose from 1 2 inch cdx common construction grade material or 1 2 inch pressure treated plywood. As its name lap implies an upper siding board laps over the board below it by 1 to 2 inches.

Hardiplank lap siding can be installed over braced wood or steel studs spaced a maximum of 24 o c. Oriented strand board or osb is a siding product sold in sheets or laps depending on preference. 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.