Floor Joist Repair Sistering

Essentially sliding a whole member beside it and nail the heck out of it from both sides with a lot of nails.

Floor joist repair sistering.

When the sagging joists are level apply a generous bead of construction adhesive to the existing joist. Sister joist correcting a problem joist is an easy repair and is usually accomplished by fastening a new joist next to a damaged floor joist doubling the thickness of the framing member. Apply a bead of construction adhesive in an s pattern along the length of a joist. Driving 16d common nails in old hard wood is difficult.

Rather than reinstall your joists you can create second or sister joists alongside the first. But it s usually best to run the sister joist over the entire span. The easiest way to repair a compromised joist is to firmly attach another board of equal or larger size to the questionable joint. These problems must be addressed firsthand prior to implementing any restoration steps.

If there was water damage make sure that whatever leaky pipe or condensation issue caused the rot is fixed. This is referred to as sistering the plan was to sister a new joist next to the old one. Step 1 evaluate your situation. Most often floor joists need to be sistered because of two problems either water damage which leads to rot or termite damage that crumbled the joist.

This board is called a sister board and the whole process is. If the new sister bears on wood at least 1 5 on each end then you re good to go. Then attach the sister joist using three 16d common nails driven every 16 in. The adhesive strengthens the bond between the existing.

Before you begin floor joist repair you should examine and evaluate your current situation. The most common way joists are repaired is to sister it up. Sistering joists if your home s structure needs some additional support the best solution may be to double down on the joists meaning we will add sistering joists to the structure.