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2"x6" Channel For Weekender Trailer?


Joel

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About 4 months ago I built a channel for the trailer from  2x6 and 2x4 lumber as called for in the Weekender plans.  I used brown pressure treated material thinking it would last longer. I left this laying on my galvanized trailer in the approximate location where it would latter be bolted down.

I went out today to look at completing the trailer set up and found that the galvanizing under the 2x6 was almost completely eaten away and replaced with a green powder. I scrapped the green stuff away with a wire brush. It looks like the galvanizing in the areas that had contact with the treated wood is gone!

I never heard of this problem before and thought I would warn anyone thinking of using this type of wood on their galvanized trailer.

Before I remake this channel using regular lumber, I was wondering if this set up has worked out ok for everyone or if you have come up with something better?

Thanks, Joel

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Welcome to the world of newly created pressured treated lumber.Since the scare tactics resulted in doing away with the old CCA stuff ( in use since the 30s) and resulted in the new, that's part of the price you pay. It eats metals. We've had to go to a whole new breed of screws, we now have to insulate the pressure treating from galvanized metals ( as in building construction) and it won't last as long.

Get some tar paper and put that between the metal and the wood. or coat it with roofing tar- something to insulate the metal from the wood.

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