Ugh. Treated lumber only ten years old. I had already applied about three applications of Cabots and thought it protected.
(This is where snow accumulates and should have known better.)
The first round of wood lattice fell apart after a few years and I replaced it with plastic.
Cabots has beautiful colors but it doesn't penetrate well or hold up in the sun.
Get it square again and tape all the tops is the plan.
I chipped out the rot with a screwdriver. Blew out the dust. Liberally coated all the insides and tops with hardener. Let it dry.
Got a first coat of filler in before the rain.
This J-B Weld product dries in only a few seconds(!) even with minimal hardener used. Have to work fast.
On the deep ends missed I'll probably have to inject a single-stage wood glue and fill them up.
