Applications
· Interior wall and ceiling board
· Exterior wall and fencing board
· Exterior sheathing
· Trim materials
· Fascias[2]
· Soffits
· Shaft-liner and area separation wall board
· Tile backing (backer board) and underlayment
· Substrates for coatings and insulated systems such as direct-applied finish systems, EIFS, SIPS, Portland type stucco and synthetic stuccos.
· Purpose and use
Magnesia is widely used primarily as wallboard alternative to conventional gypsum-based drywall and plywoods. The magnesia boards can be scored and snapped, sawed, drilled, and fastened to wood or steel framing.
Magnesia boards are a good example of the advances made in construction materials to meet changes in building codes for safety and durability
· Ratings and testing:
o Fire-resistant (UL 055 and ASTM-tested and A-rated)
o Water-resistant (freeze/thaw-tested for 36 months)
o Mold/fungus/bug free (non-nutritious to mold, fungus, insects ASTM G-21)
o Impact-resistant (ASTM D-5628)
o NYC approved (MEA # 359-02-M)
o Silica/asbestos free
o STC-rated 53-54
· Can be used in the place of traditional drywall or cement boards. No special tools required.
· Hard non-absorbent surface – using fibreglass backing - with no paper.
· Can be used in applications like cement-based siding subject to using water-proof coating systems.
· Available in colors.
· Energy efficient – magnesite calcines at approx 780 Celsius, compared to over 1,400 Celsius required to form traditional Portland cement or calcium oxide, the starting material for the preparation of slaked lime or portlandite used in common mortar and plaster.
· Magnesia boards have been mentioned in articles about biologically friendly construction and risks of mold infection.
· Comparable in cost to cement board made from Portland cement, with numerous advantages over that material for wet applications.
Specification :
1220x2440x3~40mm
900x2700x3~40mm
900X2400X3~40mm
