Scabbing Floor Joists

The scabbing over will be accomplished by structurally attaching a relatively short piece of dimension lumber to one of the joists making up the difference.

Scabbing floor joists.

A 2 notch in a 2x10 could reduce the span to say a 2x8. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in. Scabbing involves taking piece of wood and fastening it over the. For illustration it is shown on the deck joist.

The damage extends from the face of the foundation wall inward 5. Some of the joists may have damage up further into the joist. Generally and roughly speaking a notch in the top of a joist will reduce the span of a joist. A day until they re level.

Jacking them up too fast may cause cracks in the walls and floors overhead. Scabbing involves taking a piece of wood and permanently affixing it on the side of the joist over the problem area. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall. Small areas of damage to floor framing can be repaired using a method called scabbing in which you will add structurally sound wood to damaged floor joists without removing the damaged joists.

Again it depends where the notch is located. Also the additional joist do not have to be sistered. Tack a beam under the sagging joists. The damage is located in the bottom third of the joist.

These problems must be addressed firsthand prior to implementing any restoration steps. The scabbing could be done inside or out deck joist or floor joist depending on the sequence of construction. 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. Floor joists lapping splicing 2013 california building code section 2308 8 table 2304 9 1 the following are general requirements for floor joist lapping and splicing based on the 2013 ca building code.

If there was water damage make sure that whatever leaky pipe or condensation issue caused the rot is fixed.