adding joists to existing floor

Bridging or “X-bracing” allows joists to share weight. As a footstep falls on one joist some of the force is transferred to neighboring joists. Even if your joists already have a row of bridging at the center of the span adding a row on each side of the existing bridging will stiffen the floor. 【Get Price】

This video will provide you with a few examples of how you can add additional joist or even larger materials to repair a sagging floor after it has been jacked up into a good position. 【Get Price】

If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists. Sistering is the process of adding a new joist next to each existing joist. In the case of 2x6 joists you can pair them up with additional 2x6 joists by nailing them together side by side. 【Get Price】

Add Reinforcing Metal: Depending upon the conditions it is possible to strengthen or repair existing framing members such as floor joists or roof rafters by adding reinforcing material. Sandwiching the member on either side with plywood is sometimes worthwhile but the plywood must be installed correctly for greatest strength. 【Get Price】

The addition floor joists run perpendicular to the existing foundation and thus needs to be attached to it. I was under there looking around and noted that the the builder has nailed a 1 X 1 board to the existing rim board and the floor joists are resting on that board. 【Get Price】

Notches will compromise the strength of the new joists but some notches are acceptable depending on their location. Then set new joists (same height as existing ones) alongside the old. Tack a beam under the sagging joists. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight-bearing wall. 【Get Price】

Hello I want to tile the floor of this 6.5'x9.5' bathroom. This was an add on in the 30's or 40's. The problem is that the 2x8 joists are 21" OC and not adequate to to support stone tile installation. I have added pictures of the crawl space to illustrate the current conditions. This add on ha... 【Get Price】