Huber Engineered Woods

Magnesium oxide (MgO) offers simple strength and streamlined installation for a building panel with exceptional workability. MgO panels are cementitious panels that are primarily made of inorganic materials reinforced with layers of glass fiber mesh. EXACOR™ MgO panels are manufactured to provide a streamlined solution for strength, fire resistance and sound performance.

Panel Dimension 

3/4"x4'x8'

EXACOR™ underlayment panels are specifically engineered to meet the fire-rating[1], sound-rating[1] and dimensional stability requirements of most multifamily and light commercial jobsites. Made of magnesium oxide and an integrated mesh core, EXACOR underlayment panels are fire resistant[2]. In addition, EXACOR underlayment panels can offer a base for floor coverings that can eliminate the need for gypsum underlayment and the jobsite delays that may come with it.

Panel Dimensions

1/2" x 4' x 8'

1/2" x 4' x 9'

1/2" x 4" x 10"

EXACOR™ sheathing is not currently code recognized for, and therefore should not be used in, exterior walls of Type III Construction that are greater than 40 feet in height above grade[2] (NFPA 285 testing underway). EXACOR sheathing is not approved for use in Type I or Type II construction, otherwise known as high-rise construction[3].

Available panel dimensions

5/8" x 4' x 8'

5/8" x 4' x 9'

5/8" x 4' x 10'

1/2" x 4' x 8' 

1/2" x 4' x 9' 

1/2" x 4' x 10'