Sagging Floor Trusses

If this can be done any general idea on the cost.

Sagging floor trusses. Temporary adjustable floor jack tall enough to reach the floor joists from the basement floor. On the top side of the floor another fix it idea to lay down new hardwood over the existing floor. I thought the whole idea of trusses was longer spans without the need of central support. Can these be repaired by adding a beam.

The method used to fix the problem depends on the reason the joist is sagging and the number of joists. Four or five beams of the same size as your floor joists typically two by eight and as long as the room. Joist examination and temporary columns. Temporarily screw a 3 foot 2x4 to the bottom of the sagging truss so that the 4 inch side of the 2x4 is flat against the bottom of the truss and in the center of the sag.

You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings. Check floor joists for signs of sag age termites cracking. Depending on cost and practicality they could mean beefing up the floor joists or adding new support underneath with new or reinforced posts of support beams. Thre ways to fix a sagging or sloping floor.

If you re concerned about the structural integrity of sagging cracked or twisted joists in your house first call in a structural engineer to inspect the floor and recommend strengthening measures that ll take out the sags and bring the framing up to code search online or for engineers structural in the yellow pages. Two four by six wood beams of 8 to 10 feet each as straight as you can find them. A dip or slope in the floor could indicate one or more saggy joists beneath the subfloor. Place a screw jack found at any hardware store between the 2x8 on the floor of your attic and the sagging truss where the 2x4 is attached.

A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too. I have floor trusses in my basement ceiling that are sagging and the floor above is dropping as well there is no support beam across the center of the basement under the trusses. Assuming the joists are in good condition the solution to both sagging and bounciness problems is to reinforce the floor.