I'm currently having Hardie Board installed on my house, and the crew has done a good job caulking around the trim. However, I noticed they didn't caulk the seams where two boards meet. These seams really stand out, and I'm wondering if it's a regular practice to caulk these areas. Not only would it make them less noticeable, but I feel like it could also help prevent water from getting in. What do you all think?
2 Answers
According to the installation guidelines, it's typically recommended not to caulk those seams. There's a specific flashing designed for those butt joints that does the job better. Caulking might actually void the warranty, so it's worth considering that before making any changes.
I did a bit of research when I faced this same issue a while back, and a lot of folks suggested that caulking those seams isn’t a great idea. That said, I went ahead and caulked mine since I thought it looked better. So far, I’ve had no problems, but I do have house wrap underneath which probably helps prevent any moisture issues.
Interesting! Glad to hear it worked out for you.
Thanks for the info! I'll look into that flashing.