Cem Rock Extreme x4 - 4' x 8' - 1/2" Thick Admixture A built-in timer lets you

A built-in timer lets you control mixing cycles

When used with Bon's Epoxy Floor System

and no phosphates

is a difficult task for any fabricator

Cem Rock Extreme x4 - 4' x 8' - 1/2" Thick Admixture A built-in timer lets youCem Rock Extreme x4 (1 2) is a new age smooth faced multi purpose magnesium oxide (MGO) board which is highly durable non combustible board for use in applications requiring a combination of moisture and thermal resistance as well as superior performance in fire. The board will not rot and can be used as an alternative to fiber cement board, where greater dimensional stability is required. It is an ideal substrate for exterior walls, interior