Question about coosa

[Peter M.]

Does coosa board have to be glassed over for example for new deck or does just the seams need to be taped

[LilRichard]

Needs to be glassed.

[71flatback]

I've used it to make a box to put a vhf in on the shrimp boat. I glassed the surfaces and left the edges exsposed. It doesn't absorb water but if your not careful it will chip. i wouldn't use it on a floor without it being glassed

[Seadog]

Take care if you cut the stuff.  

The dust feels like you stuck your hand in a bucket of needles.