While an excellent foundation waterproofer, I will guess it was applied to wet wood and/or not thoroughly sealing columns in areas prone to decay. It is likely whoever began this build was aware of having improperly treated wood, so in an attempt to solve this, they applied Black-Jack™ Rubr-Coat 57. There are approximately 26 poles.ĭo you know of a contractor who can help or any possible solutions?”Īs properly pressure preservative treated wood (UC-4B rated) will outlast anyone alive on our planet ( ), it leads me to believe your columns are what is typically found at local lumber yards and big box stores and should never be used structurally in contact with ground ( ). I am now living in the building so access to the poles would be limited to the outside. I have been studying chemical treatments which may stop the rot and preserve existing wood, but am not sure how effective that would be. The poles are still salvageable and so I am hoping to find the least invasive and hopefully cost effective way of addressing this issue. My guess is all the poles are in similar condition or will be at some point.

I had a general worry about this but now I know it’s the case. The poles were coated with a rubber coating called Blackjack 57 but it appears to be failing. The rot has compromised the surface of the pole.

While recently doing some improvements to some interior posts I discovered that the nearest pole had wet rot below ground level. A couple years ago I bought an unfinished pole barn home. “I was encouraged to email you regarding my current situation. Help, My Pole Barn Home Poles Are Rotting

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