Wood subfloors

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Dar1
Posts: 1
Joined: Wed May 23, 2018 6:28 am

Wood subfloors

Post by Dar1 »

I have an older home built in 1900. When refinishing the second floor floors, I have noticed wide gaps in the wood plank subfloors. I want to use the floor as my top floor.However, after staining, I find small, rock like substances coming out from in between the planks. What is Iran’s how do I fill in the gaps?

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