Wood – Dry Rot (?) in Exterior Trim, patch or replace

dry-rotexteriorrepairwood

There is some moderate deterioration and cracking in part of the exterior trim of my house. I believe the trim in question is cedar.

Looking for repair advice.

My thoughts were:

1) Get some epoxy wood filler (Abatron WoodEpox) and attempt the repair. My only fear here is that the decay seems to be fairly deep.

2) Attempt to find lumber of the same size. Use a multi-tool to cut out that section of trim ~ 3 feet from the corner and replace.

Are there any alternatives to what I was considering? Is it worth attempting the epoxy route?

Photos of damaged area:

Picture 1
Picture 2

Best Answer

Don’t fiddle with epoxy. You’ll want to remove those boards and see what’s happening on the other side. You’ll want to replace the boards. As mentioned in the comments - you’ll need to assess why the wood rotted. First place to look is the flashing/trim right above the rotten boards - is water getting behind it and the rotten boards? Around it? Next time it rains go have a look at the situation - is water dripping off the edge of the flashing/trim to the ground, or is it working around the flashing/trim and running down the face of the rotten boards? Water is somehow collecting somewhere it’s not supposed to be.