Help!!! T&g Knotty Pine Removing Black Streaks

arnldmtman

I am in the process of a complete renovation-addition on a mountain home all the ceilings are exposed 2x8 knotty pine. I have been tarping the house but with the rain and snow there is still water getting in. The existing T&G has some sort of a verithane on it, probably applied once in the 60s. I have a problem with very black streaking on the T&G (New untreated & existing) not as much on the new as the old. I have tried wood cleaner (Home Depot brand) TSP & Clorox diluted in water, nothing works! Any subjection?
Thanks

Johnny_Zoom

Howdy!

The "very black streaking on the T&G" is a sign of water damage. Just an estimate from your description of the job, (And I VERY rarely use this word) Replace. Sorry for the bad news.

fez-head

Try Citric Acid, it sounds like tannin bleed.

acme const.

just wear a mask sand it down then refinish it

WOODMASTER

Sorry To Tell You But Once Wood Has Turned Black It Will Stay That Way It Will Need To Be Replaced

sawdusted

I've used oxilic acid crystals (deck wash) disolved in water and it has removed black streeks on oak ....good luck..
Dan

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