Rotted Roof Rafters

Measure the dimensions of the old rafters beneath your roofing surface.

Rotted roof rafters. If the dry rot is extensive enlist a contractor to replace the rotted. Use a powder actuated nailer to attach a 2x4 cleat to a brick chimney. Clamp a 1 by backing board in place and screw the new rafter to it. Examine the condition of the rafter the thick beam running the length of the overhang.

The rotten wood will come away easily. Cut a replacement piece from pressure treated lumber. How to replace rotted wood rafters. Measure the length of framing wood needed with a measuring tape.

Assuming it s in good shape you can leave it in place and install the new materials around it. Things you ll need pry bar reciprocating saw circular saw 2 by pressure treated lumber 1 by pressure treated lumber wood clamps screws screwdriver primer paintbrush paint oil based primer automotive body repair putty putty knife. Water seeps into your roofing system in many different ways. Slide one of the newly cut rafter legs into position directly next to the old rafter.

Things you ll need stepladder or extension ladder helper tape measure 2 by 6 inch boards salt treated circular saw speed square reciprocating saw drill with 1 2 inch bit 1 2 inch wooden dowels wood glue hammer. Use your tape measure to record the distance of both rafter legs. How to replace the rafters without removing the roof. Use a reciprocating saw to chop out the rotted rafter.

Dry rot on the ends of gable rafters must be addressed before it spreads to the roof sheathing or rafters in the attic. The cleat helps support the new overhang. If the entire rafter was rotten use the. Since roof decking is made from wood and wood composites it is particularly susceptible to rotting and water damage when continuously exposed to sustained or excess moisture.

If it shows signs of rotting water damage or other wear you ll need to chop it out using a reciprocating saw.