Constructing Second Plywood Floors

Whether you re installing a hardwood floor on the first or second floor of a building you need a solid subfloor that won t sag and that will hold nails.

Constructing second plywood floors.

Typically the second story floor joists will not only run the same direction as the first floor joists they will also be directly over them. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. Osb floor sheeting is typically 3 4 thick and comes with a tounge and goove to give the spans between the floor joists strength. The final step in building a floor for a house is to sheet it with osb.

Framers construct the second story floor system to match the layout of the main floor system. Plywood is a necessity in many diy and construction projects but not every type of plywood works for every project. Proper subflooring for wood on second floor. A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.

Second floor construction techniques follow a standard process. This guide will explain the different uses of plywood as well as popular plywood sheet sizes and its rating and grade system so that you can choose the best plywood for your project. The many types of plywood can differ in materials number of layers rating and grade. As construction gets higher builders must.

The osb or plywood must be staggered like stacking bricks to give it strength. Some newer homes have manufactured i beam shaped joists. Extremely long spans staircases or interior walls typically require additional support which can complicate your framing. Before you begin cutting or measuring grab a pencil and paper and sketch an outline of your floor.