How To Repair Rotted Roof Joist Ends

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How to repair rotted roof joist ends.

If you are using an extension ladder ask your helper to. Short videos and slideshow documenting our attempt at replacing rotten joists and flooring in a kitchen of a house we are currently renovating. Make sure your screws are big enough aim for twice the board s width. Cut the rotten spot out.

The rotten end of the beam joist is cut off. The basics of the process are as follows. How to replace rotted rafter ends on a gable roof. There are a number of ways to repair structural timber.

They have the advantage that joists are extended back into or onto the original bearing. Removing termite damaged rafters and starter boards. Basically the idea is to cut the ends off and affix a new piece of timber to the wall. The easiest way to repair joist ends is to fit joist repair plates.

Lock them in place with screws. This part can be a little hard depending on what wood you are working with. The new end is then fitted with the bars going in to slot. These come as a pair of l shaped metal plates complete with screws and instructions.

A new joist end is drilled to so two or more steel bars can be glued resined in. 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. Place a stepladder or extension ladder under the rafter end with the most damage. Measure from the end of the rafter tail to the area of good wood with a tape measure.

Inspect and assess the damaged section of timber and determine where it needs to be cut to prop the timber along it s length using suitably sturdy props such as acro props once supported cut off the damaged end leaving only solid un damaged timber now. You want to cut about 6 inches past where the rot ends just to make sure no more moisture will get through. Remove an area of the roof shingles from the edge of the roof to the upper line of the overhang using a 16 inch nail bar and hammer to pull the roofing nails. Pressure treated stuff won t let the water flow through the wood as well as straight regular wood.

A vertical slot is machined in the joist. Cut out the section of the roofing.