|Forum topic by JSThoreau||posted 08-04-2016 02:21 PM||487 views||0 times favorited||2 replies|
08-04-2016 02:21 PM
I just finished sanding down and finishing a T & G exterior ceiling with helmsman spar urethane, and the homeowner was curious about how often she needs to plan on reapplying, and also how to maintain it.
The ceiling is over an open outdoor patio area, and is a finished and shingled roof above, so it does not get any direct weather contact. I don’t imagine it would need to be reapplied regularly, not anytime sooner than every several years. I have heard even poly floors with regular foot traffic can go for five years or more without needing reapplication. Am I on the right track advising her along these lines?
She wanted it finished because it appeared to be raw knotty pine t & g (when I got up there to clean and sand it, it appeared there was a very thin layer of something, whether that was linseed oil or some such), and had been weathered, and discolored with dark moldy-like patches throughout, along with a lot of cracking, and shrinking. She wanted something on there that would help prevent that weathering and cracking from getting worse.
Also, is any maintenance necessary? I imagine the air is responsible for depositing the mold and weathering (the worst of the weathering was on roughly the north side), and so is it worth having someone come and wipe down with a damp rag once a year or some such gesture?
Thanks for any help!
Jacob, Portland Oregon