Rotted Roof Rafters

The rotten wood will come away easily.

Rotted roof rafters.

Water seeps into your roofing system in many different ways. 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. Clamp a 1 by backing board in place and screw the new rafter to it. 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.

How to replace the rafters without removing the roof. Remove the rotted wood with a chisel and pry bar. Discard the wood in a garbage bin as you work to. If the dry rot is extensive enlist a contractor to replace the rotted.

Assuming it s in good shape you can leave it in place and install the new materials around it. Examine the condition of the rafter the thick beam running the length of the overhang. If the entire rafter was rotten use the. Measure the dimensions of the old rafters beneath your roofing surface.

Use a reciprocating saw to chop out the rotted rafter. Measure the length of framing wood needed with a measuring tape. If it shows signs of rotting water damage or other wear you ll need to chop it out using a reciprocating saw. Use a powder actuated nailer to attach a 2x4 cleat to a brick chimney.

Cut a replacement piece from pressure treated lumber. Cut away rotten or damaged rafters. How to replace rotted wood rafters. Slide one of the newly cut rafter legs into position directly next to the old rafter.

Dry rot on the ends of gable rafters must be addressed before it spreads to the roof sheathing or rafters in the attic.