It reads: “Type X (Special Fire- Retardant) designates gypsum wall- board complying with this specification that provides at least one-hour fire retardant rating for boards 5/8" (16 mm) thick, or ¾-hour fire retardant rating for boards ½" (13 mm) thick, applied to a partition in single-layer nail ap- plication on each face of load-bearing wood framing members, when tested in accordance with the requirements of methods E 119.”
What is Type X drywall?
Type X drywall is made with special noncombustible fibers. It normally comes in 5/8-inch thickness and its extra thickness can also improve its soundproofing characteristics.
How much does gypsum board cost?
Gypsum Board Cost Non-discounted retail pricing for: Paper faced 1/2" thick gypsum board. 4' x 8' sheets. Quantity includes typical waste overage, material for repair and local delivery. 534 square feet: $333.39: $455.63: Gypsum Board Installation Labor, Basic Basic labor to install gypsum board with favorable site conditions.
What is fire rated gypsum?
Fire-rated gypsum board is a form of drywall that helps prevent the spread of flames across a home or business. Gypsum is approximately 21% chemically combined water, which greatly contributes to its effectiveness as a fire-resistive barrier. When gypsum drywall is exposed to fire, the water is slowly released as steam, effectively slowing heat ...
What is the fire rating for gypsum?
Type X fire rated gypsum drywall that is 5/8 -inch (15.9mm) thick and installed on each side of nominal 2-inch x 4-inch (38x89mm) wood studs spaced 16-inch (400mm) o.c. or 3-5/8 inch (610 mm) steel studs spaced 24” o.c. has a minimum fire rating for the assembly of 1 hour, which is a typical requirement for many building codes.
Is Type X gypsum fire rated?
Most Type X drywall has a one-hour fire rating. The fire rating for the 1/2-inch drywall used throughout the rest of the home is 30 minutes. As an added benefit, Type X drywall absorbs sound slightly better and is slightly stronger than conventional 3/8-inch or 1/2-inch drywall.
What is the rating for 5/8 Type X drywall?
1 hourUsing Fire-Rated Drywall The 5/8-inch, “fire-code” drywall (called Type X) increases a wall's fire rating to a minimum of 1 hour, from the 30-minute rating for standard ½-inch drywall. And it's not just thickness that makes the difference.
Is gypsum board fire rated?
Fire-rated gypsum board is a form of drywall that helps prevent the spread of flames across a home or business. Gypsum is approximately 21% chemically combined water, which greatly contributes to its effectiveness as a fire-resistive barrier.
What is the thickness and type of a gypsum board that is fire rated?
Type C gypsum board is available in 1/2-inch (12.7 mm) and 5/8-inch (15.9mm) thicknesses. Fire rated Type X Shaftliner is 1” (25.4 mm) thick and used in special Shaftwall and Area Separation Firewall assemblies.
How thick is a 2-hour fire rated wall?
A 2-hour rating can be achieved by a wall with an equivalent thickness of as little as 3 1/5 inches when expanded slag or pumice is used or 4 1/2 inches when siliceous gravel is used as the aggregate.
Are all 5/8 gypsum board fire rated?
Regular drywall has naturally occurring fire resistance due to the presence of gypsum in the core but is not fire rated. Type X drywall has special core additives that allow it to be used in fire rated designs and usually comes in 5/8” thickness.
What makes a 2 hour fire rated wall?
Double the number of Type X sheets on the wall for a simple system installed over fire-resistant fiberglass insulation; each sheet of 5/8-inch Type X drywall is rated to resist fire for one hour, so two layers will produce a two-hour firewall.
How many layers of drywall do I need for 1 hour fire rating?
Typically one layer of Type X drywall promises 45 minutes to one hour of fire protection for the building constructed with this type of material.
What makes a 1 hour fire rated wall?
More specifically, if a wall is constructed in a manner that closely resembles a tested wall which has shown to contain flames and high temperature for one hour, it is eligible to receive a 1-hour rating.
What type of gypsum board is most commonly used for fire rated partitions?
Type X (fire code) drywall board has additives to the gypsum that make it more fire-resistive than the standard board including glass fibers to control shrinkage and cracking.
Are gypsum boards fire resistant?
Gyproc® FireStop Board comprises of gypsum compound mixed with fiberglass and micro silica in core, faced with pink colored paper and is designed for systems with fire resistance of up to 1 - 3 hours.
Does gypsum catch fire?
#1: Win Fire-Resistance With Gypsum One of the advantages is the heat-resistant property of this material. It has a non-combustible core that contains chemically combined water (in calcium sulfate).
Is gypsum board considered non combustible?
The paper facing or other facing type on gypsum board has flame spread indices that vary but are less than 50, since the ASTM standard for gypsum board requires a flame spread index of 25 or less. Thus, gypsum board products are considered noncombustible materials per the IBC.
What makes drywall fire rated?
The gypsum used to make drywall is a naturally occurring mineral composed of calcium sulfate dehydrate and water. The presence of water in gypsum contributes greatly to drywall's natural fire resistance.
What is a tough rock fireguard?
Noncombustible (as described and tested in accordance with ASTM E136) ToughRock® Fireguard X® Gypsum Board is designed for use in interior drywall applications for wall and ceiling construction in assemblies with a designated fire-resistant rating. 1 Its dimensionally stable gypsum core is reinforced with glass fibers, increasing its strength and fire resistance. 5/8″ (15.9 mm) ToughRock Fireguard X is UL-classified Type X and has a flame-spread rating of 15 and smoke developed 0 when tested in accordance with ASTM E84.
Can gypsum be installed horizontally?
Answer. While gypsum boards are stronger in one direction, they may be installed either vertically or horizontally on both wood and steel studs. If the boards are to be used in a fire rated assembly, then use the board orientation that is stated in your specific rated assembly.
Can gypsum board get wet?
Answer. According to the Gypsum Association publication GA-231, gypsum board should not be allowed to get wet; it should be covered if stored outside. However, there are situations where the board could get wet during transportation/storage or when installed in-place.
Is there a fire rating on a gypsum board?
There is not a fire rating on an individual board. The fire rating is based on an entire assembly (studs, board, fasteners, etc.) being tested together. Please consult the Gypsum Association GA-600 Fire Design Manual or UL Fire Resistance Directory for specifics on a particular fire-rated assembly. For additional information concerning fire ratings and fire safety, go to www.buildgp.com/safetyinfo.
What is a 5/8" gypsum wallboard?
Type X gypsum wallboard, 5/8" in thickness ("5/8" type X wallboard"), is manufactured for use as one component of an assembly/system (such as a wall) where a fire resistance rating is required in a residential, commercial, or other structure by an applicable building code.
What is 5/8" gypsum?
5/8" Type X gypsum wallboard, 5/8" in thickness, is currently manufactured in accordance with ASTM Standard C 36/1396. One section of ASTM C 36/1396 requires type X gypsum wallboard to meet specific requirements when tested using the test method defined in an ASTM Standard, the E 119 test, Standard Test Method for Fire Tests of Building Construction and Materials. Additionally, all gypsum wallboard manufacturers in the United States subscribe to an independent third party certification and labeling service such as UL to ensure product consistency and quality.
What is gold bond gypsum board?
Gold Bond® Fire-Shield® Gypsum Board panels consist of a fire-resistant gypsum core encased in heavy natural-finish, 100% recycled paper on the face and back sides.
What is the shape of a long edge panel?
Long edges of the panels are tapered or square.
Can gypsum board be cut?
Gypsum board is easily cut for quick installation, permitting painting or other decoration, and the installation of metal or wood trim almost immediately.
Where should gypsum board be stored?
Gypsum board must be stored in an area that protects it from adverse weather conditions, condensation, and other forms of moisture. Job site conditions that can expose gypsum board to water or moisture must be avoided.
What is a firebloc type X?
FIREBLOC Type X wallboard is used as a covering material for interior walls and ceilings in residential and commercial applications that often require specific fire rated assemblies. It is designed for direct attachment by screws, nails or adhesive to wood or metal framing and even existing surfaces. With joints covered, FIREBLOC Type X gypsum wallboard will resist the passage of smoke. For additional information on smoke barriers, refer to Gypsum Association publication, "Building and Inspecting Smoke Barriers" (GA-618).
How to store gypsum board?
Gypsum board must be stored off the ground and under protective cover. Sufficient risers must be used to assure support for the entire length of the wallboard to prevent sagging.
What is gypsum core?
The fire-resistant gypsum core is encased in 100% recycled natural-finish paper on the face side and sturdy liner paper on the back side. The face paper is folded around the long edges to reinforce and protect the core, with the ends being square-cut and finished smooth.
Is gypsum board always flat?
Gypsum board shall always be stacked flat - NEVER on edge or end. Gypsum board stacked on edge or end is unstable and presents a serious hazard should it accidentally topple. Gypsum board should be placed so weight is evenly distributed and the floor is not overloaded. Applicable Standards. Manufacturing.
Can you order special lengths of gypsum?
Special lengths or edges may be available on special order. Consult your American Gypsum sales representative for details.
Can you use gypsum board for mold?
Gypsum board that has visible mold growth must not be used . For additional information, refer to Gypsum Association publication," Guidelines for the Prevention of Mold Growth on Gypsum Wallboard " (GA-238). Gypsum board must be stored off the ground and under protective cover.
What Is Fire-Rated Type X Drywall?
Fireproof drywall is the common term; its industry name is Type X drywall. The thickness of this drywall is 5/8-inch, including all layers.
How thick is fire rated drywall?
Drywall typically comes in 1/4-inch, 3/8-inch, and 1/2-inch thicknesses. Type X drywall is 5/8 inches thick. In addition to the usual gypsum found in regular drywall, fire-rated drywall contains glass fibers to form a super-tough core. The gypsum and fiberglass are packed tighter and denser than with regular drywall.
What is USG drywall?
USG is the manufacturer of Sheetrock Brand Firecode C Gypsum Panels. USG makes the point that ASTM (American Society For Testing and Materials) testing of fire-rated drywall requires that entire "assembly/systems" be tested, not just the drywall. 1 .
How long does a 1/2 inch drywall wall last?
If a conventional 1/2-inch thick sheet of drywall will stand up to 30 minutes of fire, then the added 1/8-inch found in the Type X drywall, along with its other properties, will double your margin of safety to 60 minutes. For this reason, fire-rated drywall is sometimes called one-hour fire wallboard.
How much more does fire rated drywall cost?
Fire-rated drywall costs more than the regular drywall. As a rule of thumb, you can count on it costing about 10 percent to 20 percent more than conventional drywall of the closest possible thickness.
How long does it take for drywall to fire?
Most Type X drywall has a one-hour fire rating. The fire rating for the 1/2-inch drywall used throughout the rest of the home is 30 minutes.
Can fire rated drywall be installed throughout the house?
If you want fire-rated drywall to be installed throughout your house, you would need to request this with the contractor, as this is not normally done.
What is fire resistance in gypsum?
Fire resistance, defined as the property of a building assembly to withstand fire or give protection from it, is first the ability of a building to maintain structural integrity and stability despite exposure to a flame. In applications, like wall and floor-ceiling assemblies, fire resistance serves as a barrier to flame spread, providing temporary refuge and time to escape.
What is a type C board?
During this time, USG invented an enhanced proprietary Type X board, commonly referred to as USG “Type C.” As with the Type X panels, the core of Type C contains glass fibers, only in a much higher percent by weight. In addition to the greater amount of glass fiber, the core of these panels also includes proprietary modifiers which provide greater fire-resistive qualities. It is for this reason that Type C board became synonymous with ceiling applications, while Type X became the standard for walls—and it’s been that way for more than 50 years.
How many fires were reported in 2014?
From 2014-2018 there were more than 493k structure fires that were reported to local fire departments in the United States. 1 Beyond just active protection, these structures also employ passive protection, such as gypsum panels, to restrict the transfer of heat and fire in the event of an emergency.
Is a fire resistant board a type X?
As there is no formal industry definition for special fire-resistant board beyond “Type X,” there are no qualifications as to the performance differences between Type X and enhanced proprietary Type X boards. While enhanced proprietary Type X panels (including Type C) have been evaluated and are approved in more challenging constructions due to their superior fire-resistive qualities, these panels are still, by definition, a Type X, having met the ASTM C1396 minimum requirements as fire-resistant.