Replacing Rotted Roof Rafters

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

Replacing rotted roof rafters.

Replace rotted lookouts so you have a good nailing surface for your new soffit boards photo 7. Measure the length of framing wood needed with a measuring tape. Remove weak spongy wood preserve and protect wood wi. Install new 2x4 lookouts to replace rotted ones or screw a new one to the old one if it s mostly sound.

Clamp a 1 by backing board in place and screw the new rafter to it. The rotten wood will come away easily. Make sure you also pick up enough pressure treated lumber to cut new shingle molds and rafters if necessary. Cut a replacement piece from pressure treated lumber.

In addition to wood you also have the option of choosing a material like cellular pvc fiber cement aluminum or. Cut off the rotted rafter tail with a reciprocating saw. How to replace rotted rafter ends on a gable roof step 1. Screw a new section of rafter to the old one to reinforce the tail.

Discard the wood in a. Dry rot on the ends of gable rafters must be addressed before it spreads to the roof sheathing or rafters in the attic. Make the new section twice as long as the rafter tail. Cut a piece of 1 by pressure treated lumber that is longer than the replacement board by 4 to 6 inches.

If you are using an extension. The cleat helps support the new overhang. This video shows from start to finish the repair of rotted endbeams on a house using the endrot system. Remove the rotted wood with a chisel and pry bar.

How to replace rotted wood rafters step 1. How to replace the rafters without removing the roof. Measure from the end of the rafter tail to the area of good wood with a tape measure. Slide one of the newly cut rafter legs into position directly next to the old rafter.

If the entire rafter was rotten use the length. Use your tape measure to record the distance of both rafter legs. When measuring extend the. Use a powder actuated nailer to attach a 2x4 cleat to a brick chimney.

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.