FAQ: Do I install tongue and groove flooring differently than regular square edge plywood?

Question:

Do I install tongue and groove flooring differently than regular square edge plywood?

Answer

Tongue and groove flooring is installed perpendicular to the floor joists. Regular square edge is installed running with the floor joists. This is because tongue and groove is supported at the tongue and groove joint.

The square edges of the tongue and groove will meet and be nailed over a floor joist which will support that joint.

Regular square edge is installed running in the direction of the floor joists to minimize the number of unsupported joints. Where they meet over a floor joist they are nailed and supported there.

The other edges on any floor over 8ft can be supported with a 2×4 under the joint and screwed to each piece of plywood.

More FAQ’S

Click here to read more frequently asked questions.