Constructing Second Floor Plywood Floors

The subfloor is the decking installed on top of flooring joists.

Constructing second floor plywood floors. 35 products in floors plywood. 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. Framers construct the second story floor system to match the layout of the main floor system. There are two basic ways to go.

Proper subflooring for wood on second floor. Building supplies lumber composites plywood sheathing plywood. When nwfa guidelines minimums are not met the recommendations are to overlay the existing subfloor material with a 1 2 inch panel product or add structural support from below. If there s wall board covered ceiling suspended from the underside of that floor the dead load increases to about 10 pounds per square foot.

The building code requires 5 8 inch plywood or osb. The thickness of plywood. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot.

In addition to the visible surface flooring material the carpet tile or hardwood there is usually an underlayment and beneath that is a subfloor that serves as the foundation and structural reinforcement for the floor. For joist spans 16 inches or less nwfa recommends minimum panel thickness of 5 8 inch plywood or 23 32 inch osb. The osb or plywood must be staggered like stacking bricks to give it strength. The final step in building a floor for a house is to sheet it with osb.

The subfloor consists of sheet materials that are nailed or screwed to the joists to. Visual filter title loading. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home. 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 finished floor is then installed on top of the subfloor. For pricing and availability. Remove the existing flooring. What size plywood do i use for a subfloor.

A second story house offers additional living space without the need for a larger foundation leaving you with more room for recreation or gardening in your yard. The dead load on a floor is determined by the materials used in the floor s construction. A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals. Plytanium 23 32 cat ps1 09 tongue and groove pine subfloor application as 4 x 8.