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Join Date: Oct 2006
Location: Chester County, PA
Re: Sealer for Hemlock
Well, I would just try any high grade polyurithane. Are the holes in any other wood surfaces or just the hemlock? Any evidence of dust, dead bug bodies, cacoons, b roken off insect wings? This sounds like Carpenter Ants. If so you need to act aggressively and call in a profesional exterminator. They can hollow out the interior of a floor and you will not know it until you step on it and end up in the basement.
Good night Chesty, wherever you are......