Cement Board Siding Gaps Between Ends

Answered by Brendan ~ July 30, 2010 ~ No Comments

I bought a house with cement board siding and every single butt end has a space about a 1/2 inch. It looks as though it wasnt put up correctly, it has no caulking on ends by any trim. What can I do to fix this?

Mike ~ San Jose, California

Brendan Fowler

Short of installing new exterior trim or residing your house, I think that your best option is going to be caulking those gaps. If you try to fill gaps that size with a non-flexible crack filler, the expansion and contraction of the siding will most likely cause it to crack. If you end up trying to caulk the gaps you will probably need to caulk over the same place multiple times in order to completely fill the crack. Good luck!

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