Replacing Rotted Roof Rafters

If you are using an extension.

Replacing rotted roof rafters.

Clamp a 1 by backing board in place and screw the new rafter to it. If the dry rot is extensive enlist a contractor to replace the rotted. How to replace rotted rafter ends on a gable roof step 1. Dry rot on the ends of gable rafters must be addressed before it spreads to the roof sheathing or rafters in the attic.

Slide one of the newly cut rafter legs into position directly next to the old rafter. Use a powder actuated nailer to attach a 2x4 cleat to a brick chimney. Use a reciprocating saw to chop out the rotted rafter. The rotten wood will come away easily.

Cut off the rotted rafter tail with a reciprocating saw. Screw a new section of rafter to the old one to reinforce the tail. The cleat helps support the new overhang. Measure the dimensions of the old rafters beneath your roofing surface.

Make sure you also pick up enough pressure treated lumber to cut new shingle molds and rafters if necessary. How to replace the rafters without removing the roof. When measuring extend the. How to replace rotted wood rafters step 1.

Remove weak spongy wood preserve and protect wood wi. In addition to wood you also have the option of choosing a material like cellular pvc fiber cement aluminum or. Remove the rotted wood with a chisel and pry bar. Measure from the end of the rafter tail to the area of good wood with a tape measure.

Place a stepladder or extension ladder under the rafter end with the most damage. Measure the length of framing wood needed with a measuring tape. This video shows from start to finish the repair of rotted endbeams on a house using the endrot system. Use your tape measure to record the distance of both rafter legs.

If the entire rafter was rotten use the length. 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. Replace rotted lookouts so you have a good nailing surface for your new soffit boards photo 7. 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.