HardieBacker 0.42 in. x 3 ft. x 5 ft. Cement Backerboard

Perfect for a diy outdoor chalkboard! It already got rained on during Hurricane Hilary and it held up.

As pictures show, this product - at least as far as I am concerned - is NOT a simple score and snap product! Scored very well! but snapped in elsewhere ruining the entire board! The score line did not weaken it one iota! All their directions say is - “snap upward along score line”, so what gives? I guess about the only way to use this stuff is with circular saw and appropriate blade, respirators, and dealing with enormous dust residue - PIA!

I purchased about 300 of these hardie backer boards for a condo in la, sound engineer required me to install double of these, they were great a light enough to carry and move around, easy to cut and place on the floor, I anchored some down with concrete screws and didn't break good material.

Choice of the pros. Easy to score and snap

my favorite cement board. It would be perfect if they add a mark line for each 8" it will make screwing the boards in little faster.

Easier to use than Wonderboard. Goes down faster and easier modify and fit in tight spaces.

the backer board is fine. I used my rotozip to cut it with a diamond blade. easy to cut and handle. I have never had much luck cutting this stuff with a razor knife.

Easy to cut and trim. Textures nicely. Used cement boards instead of sheet rock on walls!

Much stronger than drywall and the 2 different sizes of 1/4" & 1/2" make it easy to fit your shower.

I've used this product in dozens of bathrooms, behind tub and shower walls but this time, I decided to use it on something totally different. I installed below a few bay windows on an old house, where there had previously been some of that old-fashioned criss-cross, wooden lattice. I took the lattice down because the varmints kept crawling behind there to keep warm at night. They also had a habit of tearing it apart as a way of saying "Than you" for the free nights lodging. So, I decided to use concrete backerboard instead and I painted this boards a flat black with BEHR brand exterior paint. This would not only send out a "No Vacancy" message but it would keep the cold off of the floors in the bay windows in the winter months. This was a very simply and inexpensive fix.