On Apr 8, 4:48*pm, J Burns wrote:
Four years ago I replaced the rotten threshold of my back door. *I took
a plank from a pallet, sawed and planed it to fit, caulked, applied two
coats of Thompson's sealer, and painted.

Before long, the wood was getting wet. *It soon rotted.

What's a better way to make a threshold?

I replaced my rotten window sills with redwood. That was 15 years ago.

Jimmie