How To Firm Up A Floor With 24 Center Joists

Add a layer of plywood.

How to firm up a floor with 24 center joists.

Revolutionary wood product which allows you to eliminate bounce and vibration in wood frame construction floors. One technique or a combination may be your most practical solution. If your joists span 12 ft for example place bridging 4 ft. Shore up floor joists and reduce the bounce in a number of ways but the six methods outlined here represent a mix of common and not so common solutions.

Metal bridging is available at home centers in lengths to fit between joists that are centered 16 in. Excellent for retrofitting your floors. If you need to cut through a joist firm up the floor as shown in fig. The ends of the joists often sit in metal joist hangers.

A cast iron tub with water and occupant can weigh in at more than 800 lbs. For 7 8 inch panels joists can be up to 32 inches on center and for 1 3 32 and 1 1 8 inch thick panels the joists can be. Starting near the end of the deck snap a chalk line perpendicular to the joists. If there is no bridging in the center of the span install a row there as well.

You will place the blocking along the chalk lines. The chalk line should run from one end of the deck to other. Use a temporary 2x4 post at the midpoint of the span to support the joist until the adhesive cures usually in 24 to 48 hours. Bottom edges of joists must be free of wires pipes and ducts.

As mentioned earlier the ledger board and beams support all the floor joists which are usually spaced 16 in. Repeat this step every 3 to 4 feet across the deck. Be sure that each hanger is firmly fastened in place with hanger nails not screws or common nails. The best choice depends on access to the joists obstructions in the floor system or current remodeling plans.

Bouncy floors are one of the most vexing problems faced in houses both new and old. For 23 32 and 3 4 inch panels joists should be 24 inches on center. Doesn t interfere with plumbing or wiring in joist bays. With joists 16 inches on center this floor sheathing has a code plus allowable live load of 240 pounds per square foot.

Deflection of the floor sheathing between the joists shouldn t be contributing to the problem since 23 32 inch apa rated sturd i floor can span up to 24 inches according to code. From the foundation wall.