Type X Gypsum Board Roofing

15 9 mm type x gypsum board over the en tire roof area.

Type x gypsum board roofing. Glass fibers are added to the board to help it retard fire. Regular drywall has naturally occurring fire resistance due to the presence of gypsum in the core but is not fire rated. The thickness of this drywall is 5 8 inch including all layers. Certainteed type x board features a specially formulated core providing fire resistance ratings when used in tested assemblies.

Type x drywall has special core additives that allow it to be used in fire rated designs and usually comes in 5 8 thickness. Since test furnaces are subject to variation due to individual. Its industry name is type x drywall. R values 28 tested in accordance with astm c518 spannings.

Also because it is denser than normal gypsum and paper drywall it takes longer for the fire to degrade it. 1 4 dens deck roof board. Certainteed type x fire resistant drywall is an interior gypsum board consisting of a solid set fire resistive type x gypsum core enclosed in ivory colored face paper and a strong liner back paper. Since 1965 georgia pacific gypsum has been committed to developing the highest quality gypsum building products in the industry.

In construction the r value is the measurement of a material s capacity to resist heat flow from one side to the other. Apply the gypsum board perpendicular to and on top of roof trusses or rafters prior to the installation of combus tible roof sheathing. Fireproof drywall is the pejorative term. Both regular and type x gypsum board are covered under the astm c 1396 gypsum board standard specification.

Fire rated type x drywall basics. Densdeck roof boards can replace any generic type x gypsum board in any roof assembly in the ul fire resistance directory under the prefix. Our versatile toughrock gypsum boards are ideal for a wide range of commercial and residential interior applications and our dens family of high performance fiberglass mat faced gypsum products offer exceptional strength and superior moisture mold and fire. Gypsum board s ystems are tested based on the.

Shown to withstand delamination deterioration warping and job site damage far more effectively than paper faced gypsum board and other conventional roofing products such as wood fiberboard and perlite certified by ul for use as a fire barrier over combustible and noncombustible decks in accordance with the ansi ul 790 and ulc s114 test standard. 1 4 spans flute widths up to 2 5 8. Each type of roof board is uniquely designed to help protect your roof when used as a fire barrier thermal barrier coverboard recoverboard or parapet wall. Type x gypsum wallboard 5 8 in thickness 5 8 type x.

In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation. Securock roof boards are a portfolio of high performance roof boards to meet the needs of your low slope commercial roofing project.