Floor Joist Problem

If you have improper holes and notches from alterations and running service lines this can be the source of weakened joists.

Floor joist problem.

The method used to fix the problem depends on the reason the joist is sagging and the number of joists. How much repairing floor joists should cost. A dip or slope in the floor could indicate one or more saggy joists beneath the subfloor. But larger is not always better when builders are constructing a home or adding a room addition.

If only a few joists are rotted primarily at the bottom they can be repaired using a process known as sistering after the rot is cleaned away and the timber treated to prevent more problems a new joist is laid beside the old one and fastened to it. Average costs and comments from costhelper s team of professional journalists and community of users. Material exposure like all wood materials i joists are susceptible to moisture. These problems can be just about anything but extreme problems can lead to something as dramatic as your floor caving in.

If your floor joists have been cut improperly to install pipes wiring or hvac ducts this could be causing your floor to slope. Common sense tells you that large floor joists can carry more load and spacing joists closer together also increases the load bearing capacity of a floor. If problem areas can be identified ahead of time the joist placement and spacing can be adjusted prior to installation avoiding improper field notches that can affect the joists structural integrity. There shouldn t be any cuts or penetrations in the middle third of the joist or at the bottom of the joist either.

The extra two inches of vertical distance when a floor is framed with 2 x 10 joists rather than 2 x 12s can be quite important for example. That s going to be more expensive to fix.