Olympic Stain Sealer vs Minwax Helmsman

starplexMarch 5, 2013

Last year we had our porch remodeled. The ceiling is Pine Bead board. When new last year I stained the ceiling with Minwax Polyshade, which turned out great. However, the ceiling gets mildew on it from time to time (southern humidity). At this point which would be the better option, to coat with Helsman Spar Urethane as an outdoor protector to combat the mildew, or apply something like a Stain Sealer (Olympic, Cabot, etc) that is meant for Decks and fences that resists mildew?

I really don't want to strip the original stain as the concrete floor has SunDek on it & I don't want to risk damaging the floor coating with a stain stripper on the ceiling.

Any advice is appreciated.

Thank you for reporting this comment. Undo

I may be mistaken but I do believe that Polyshades is an interior only product which may be partially why your having this issue. If your going to recoat I would use a Spar Varnish personally.

    Bookmark   March 5, 2013 at 12:53PM
Thank you for reporting this comment. Undo

A touchy situation. ANYTHING you put on that ceiling now will still have the mildew, eventually, unless you can remove all of what is there.
Spar urethane or varnish would be my vote, but that mildew is tenacious stuff.
Good luck.

    Bookmark   March 13, 2013 at 8:48PM
Sign Up to comment
More Discussions
What is the best composite?
I have been reading this forum for awhile as we are...
Please recommend finish product for reclaimed redwood deck
We are installing a redwood deck in our new build and...
Venting a wood column to prevent rot
I have purchased some old wood columns that are stave...
My aging parents need new front and back steps leading...
What to Expect from Your Premium Decking Contractor
You’ve decided to hire a decking contractor. Congratulations!...
Design Builders, Inc.
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™