Remove the rotted wood with a chisel and pry bar.
How to repair rotted roof rafters.
Cut away rotten or damaged rafters.
Use cardboard or plastic baffles opening photo to keep your insulation from blocking the airflow.
Measure the dimensions of the old rafters beneath your roofing surface.
Discard the wood in a garbage bin as you work to.
If the entire rafter was rotten use the.
The rotten wood will come away easily.
Examine the condition of the rafter the thick beam running the length of the overhang.
Use your tape measure to record the distance of both rafter legs.
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.
Assuming it s in good shape you can leave it in place and install the new materials around it.
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.
Cut a piece of 1 by pressure treated lumber that is longer than the replacement board by 4 to 6 inches.
How to replace rotted wood rafters.
Insert a strip vent or other vents in the new soffit to ventilate the attic and roof.
How to replace the rafters without removing the roof.
Cut a replacement board from 2 by pressure treated lumber that is the same size and width as the rafter tail you just cut using a circular saw.
Cut off the rotted rafter tail with a reciprocating saw.
Cut the last soffit board to fit then cover the sawn edge with the trim strip.
Measure the length of framing wood needed with a measuring tape.
Use galvanized finish nails to fasten the soffit boards.