maddmaxum69

has anyone refinished oak stained and poly finish exterior wood garage doors didnt know to use liquid strippers or sand any help thanks

Brushslingers

Not sure if you said -

Has anyone refinished stained oak doors with a poly finish, this is exterior, and didn't know how to use strippers?

Or -

Has anyone refinished stained oak doors with a poly finish, this is exterior, and didn't have to use strippers?

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Benn

Teetorbilt

I've done a lot of wood entry doors. I'd strip with something like http://kwickkleen.com/ , a bio-friendly stripper. Bleach (if required), seal (if required, probably not on oak), sand as required, stain (if required) and start stacking on a quality MARINE varnish (oil and not the stuff that they sell at the box stores).

Reduce the first 2 coats by about 20-25% for penetration and then go to the appropriate brushing/spraying thinner. Sand or steel wool lightly between each coat. 5 coats total will get you quite a few years of protection.

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