Subfloor Second Floor Construction

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.

Subfloor second floor construction. Get 5 off when you sign up for emails with savings and tips. Can of advantech subfloor adhesive yields approximately 400 linear feet of gel adhesive at bead compared with applying a 28 oz. If you have an older subfloor constructed of multiple slats rather than large sheets of plywood you can insert your straight edge between the slats. Some newer homes have manufactured i beam shaped joists.

Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home. This method only measures subfloor thickness.

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. But combined with other methods that measure the finish floor you can get a fairly accurate reading of total floor thickness. Framers construct the second story floor system to match the layout of the main floor system. By taking the best steps toward building a quiet subfloor you can give homeowners the peace of mind that comes with preventing the nuisance of squeaks and creaks.

The dead load on a floor is determined by the materials used in the floor s construction. A glue nailed construction technique is optimal for ensuring a flat stable floor. Cartridge adhesive at 3 8. Second floor construction techniques follow a standard process.

A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot. Use a solvent based glue that meets astm d3498 performance standards. In cases where latex subfloor glue is required careful selection is necessary due to the wide range of performance between brands. 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.