Originally Posted By: dakkon
i built a cedar pergola last year, i treated it with Thompson water sealer, but need to stain it this year.....

Ken, I think the point is that stain needs to sink into the wood to work correctly. If dakkon put Thompson's Water Seal on the wood last year, the stain won't absorb into the wood this year the way it should.

The TSP might be a way of removing the Thompson's so the stain can absorb into the wood!
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::