Over Joist Attic Decking

Lay sheets of the plywood onto the floor spanning the joists with a 1 2 inch space between the walls of the attic and the edges of the plywood.

Over joist attic decking.

Cut 2 thick lumber to length for the frame. Build a frame on 16 centers perpendicular to the attic floor joists. You need 3 4 inch plywood. Installing flooring material over the attic doesn t quite leave room for the recommended insulation space needed to provide efficient home energy.

Place the sheets of plywood so that the edges of each board ends at the center of the floor joists with a 1 8 inch gap between adjacent boards on the same joist to allow for wood expansion. A raised platform of lumber in dimensions of 2 4 or 2 6 with insulation placed between joists and covered up with a 12 inch plywood helps build the right flooring. A single 4 pack covers approximately 10 sq. Walk to one end of the attic by carefully stepping only on the wooden ceiling joists.

Joist spacing and attic use the joist spacing in some attics is 24 inches and 1 2 inch sheets will sag and possibly break when spanning that distance. Here s how to go about it. The ceiling load may include items like drywall ducts recessed lights bathroom fans and attic insulation. Screw the frame to the joists to.

Attic dek flooring provides additional storage space that supports up to 250 pounds making it easier than ever to get those cluttered spaces organized. Attic dek is a specially designed attic floor system that consists of 16 or 24 squares attached to the top of ceiling joists. Redesigned to fit either 16 or 24 on center joist spacing supports up to 250 lbs making it easier than ever to get those cluttered spaces organized. Attics that have no flooring unless expressly built so an attic s joists are meant for carrying the load of the ceiling below and related elements collectively known as the dead load.

Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches.