Does anyone know if I can use Thompsons waterproofer/tinted wood protector on new wood doors? My home is cedar shake and I'd like a natural looking finish on the porch doors?. they will never get wet as they are protected by a 4' porch.:)

If they are outdoor doors yes you can use the Thompson's. Your doors will get outside humidity and moisture anyway and will get wet when the wind blows hard in a storm.

I agree with the above post, but I think you need to reapply every few months for the first year and then as needed from then on.

No matter what you use the weather and sun will work on it and turn it bad from the bottom up.

The best thing to use to prevent discoloring is marine varnish, used on boats.

Good luck

Roger