How To Install A Subfloor In An Attic

The key to a successful attic flooring project is to complete the project without damaging the roof or floor structure or weakening the attic insulation.

How to install a subfloor in an attic. Another way to add attic flooring is to secure plywood sheets to the floor. If your attic joists won t bear the weight necessary to finish out a living space but the engineer cleared them to support floor decking for light storage you can install inch plywood or. Install the subfloor 1. Screw the plywood into the subfloor.

Place four screws into each corner of the plywood making sure to line it up with the boards on the subfloor. Position the plywood sheet. Once the boards are in place place more screws placed 16 inches 40 64 cm apart to hold the plywood to the subfloor frame. The plywood should be laying on top of the subfloor with no overhang.

When laying out for. Once the structure has passed the building inspection you can run electrical plumbing and mechanical lines and insulation as applicable then install plywood subflooring. If whole sheets are. Cut and install lumber blocking or bridging between the joists if required by local code.

Attic flooring for storage space above trusses. Lay the first plywood sheet on the attic joists along the longest side of the attic wall. This will add a much more stable platform to your attic flooring and can act as a subfloor if you decide to finish off the attic in the future. Snap a chalk line on the center of each attic joist.

There are also synthetic floorings available from several different manufacturers. Drill 2 1 2 inch screws through. Measure the area closest to the attic door to determine if a whole sheet can be used or what the first cut must be. These lines delineate exactly where the edges of each plywood.

Carry the first whole sheet of flooring into the attic. Because of this installing a floor to an attic always involves some level of disturbance.