Rotten Roof Joists

There s lots of different methods for repairing or replacing rotten joists but the one we decided to go with was to install wall plate.

Rotten roof joists.

You can go for 6 inches if you have space. If your home has wood siding examine the siding around and beneath the windows for signs of swelling or discoloration. This part can be a little hard depending on what wood you are working with. The best thing to do is mark your joists that are to be removed.

Why i didn t choose a scarf joint joist repair a few reasons added up. It means removing quite a bit of timber that isn t rotten including the edge moulding. Pressure treated stuff won t let the water flow through the wood as well as straight regular wood. Wood rotting from the inside out compromises the structural integrity of the rafter.

Just to be safe we re going to cut the joists at least 4 inches away from the rotten spots. Rotted wood rafters in a roof are a serious issue. This will make sure that dry rot that isn t visible won t sneak up on you. Paint can hide wood rot so poke the siding with the tip of the.

Basically the idea is to cut the ends off and affix a new piece of timber to the wall. You want to cut about 6 inches past where the rot ends just to make sure no more moisture will get through. The rotten joist end is cut off and an angle cut is made to bottom of the beam to allow a new part to be bolted on a good distance from the fulcrum point.