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Boris writes

Will Bore-Care go through wood down to the joists?

I have no sub-floor. I have over 100 year-old 1-inch thick pine floorboards installed directly onto joists. If I sand the floors and apply Bora-Care to them, would Bora-Care effectively penetrate into the joists to protect them as well? Is there anything I can do to make penetration more effective?

Answer:

Since you are wanting the joists to be treated as well, we recommend spraying the Boracare directly onto them as it will not soak through the floorboards into the joists. Boracare may take time to get throughthe floorboards since the wood is very old and would not have much moisture remaining in them. The best way to be sure the Boracare penetrates correctly would be to treat on all sides and get a full coverage spray. 
 

Answer last updated on: 01/16/2021

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Bora-Care

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