Calcium silicate board surface smooth it? Waterproof? Can I use this board to do the outdoor door?
Calcium silicate board processing generally there are two, according to the customer requirements for flatness can be divided into sanding and not sanding. Sanding is the correction of flatness. So that there is no problem flatness.
Calcium silicate board is the biggest characteristic of waterproof fire, stable performance. Using the calcium silicate board to do the outdoor door is already a mature technology
Yes, no problem, you can use this board to do outdoor door
