6% with 8cm calcium silicate board, which is the most common?

I recently learned to decorate the smallpox, I understand that the general is to use keel + silicate rafts to promote the Wo drum drums to support the calcium plate. Will the current maximum number of people is 6%, or 8 PCT thickness of calcium silicate board? More

Smallpox 6 is enough, not the outer wall. You are afraid of thin with 8, of course, 8MM to more expensive

Home improvement are generally used 8%, after all, is their own place to live.

Of course, is 6 cm