What is the fire rating of type x 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. Type X has a denser core and contains glass fibers that keep it from crumbling in the heat.

Is Type X drywall fire rated?

Surface Burning Characteristics: CertainTeed Type X Gypsum Board has a Flame Spread rating of 15 and Smoke Developed rating of 0, in accordance with ASTM E 84, (UL 723, UBC 8-1, NFPA 255, CAN/ULC-S102). “UL Classified for Fire Resistance (ANSI/UL 263, ASTM E119) and listed under UL File No.

What is Type X fire rating?

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 added benefits, Type X absorbs sound slightly better and is slightly stronger than conventional 3/8-inch or 1/2-inch drywall.

Is Type X drywall considered combustible?

Type X gypsum board is defined by ASTM C1396 and generally requires a fire-resistance rating of not less than one hour for 5⁄8” thick boards or 45 minutes for ½” boards. … For other gypsum boards including Type X, although they are all non-combustible, shrinking occurs when exposed to a flame or heat.

What class fire rating is drywall?

A: Both drywall Type X and Type C are approved for use in a 60-minute rated design. The wall systems they are approved for are different, however. Type C fire-rated drywall has more glass fiber reinforcement and other ingredients in the gypsum core that makes its fire-resistive properties superior to Type X.

How can you tell if a drywall is fire rated?

Type X drywall products will have a UL/ULC Marking printed on the back of each board identifying it as a fire-resistance rated board.

How do I know if my drywall is fire rated?

Fire rated drywall is typically found on attached garage walls and ceilings that are adjacent to the main living area of the home. For commercial buildings, fire rated gypsum drywall is specified for most of the building walls and ceilings to meet building code requirements for fire partitions and assemblies.

What is the fire resistance rating of 5/8 drywall?

5/8 in. x 4 ft. x 8 ft. Firecode Core (Type X) Drywall Panel is rated 4.7 out of 5 by 59.

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.

How many layers of drywall do I need for a 2 hour rating?

Gypsum Board: Two (2) hour rated walls have two (2) layers of 5/8″ Type ‘X’ gypsum wallboard panels on each side of the steel studs.

Is all drywall fire resistant?

Although all drywall is fire resistant to a degree, type-X and type-C drywall are designed specifically to be used in fire-rated assemblies. These products help to contain fire in the area of its origin much better than regular drywall.

What is considered a non combustible wall?

Non-combustible materials are building materials that do not burn or ignite when subjected to expected levels of fire or heat. Examples of non-combustible materials include brick masonry, concrete blocks, hardy backer board, calcium silicate board, cement board, metal, and certain types of glass.

Is gypsum board fire resistant?

When gypsum drywall is exposed to fire, the water is slowly released as steam, effectively slowing heat transmission. … Fire-rated gypsum drywall is more fire-resistant because it contains glass fiber reinforcement and other additives within its specially formulated gypsum core to help it hold up longer to fire exposure.

What is the fire rating of 3/4 drywall?

USG Sheetrock® Brand Ultracode® Core Gypsum Panels can achieve a two-hour fire rating with single-layer construction when used with mineral wool insulation in steel framed walls.

What makes a 1 hour fire rated wall?

According to the Engineered Wood Association, a one-hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures, and support its full load, for at least one hour after the fire begins.

Is purple drywall fire rated?

The PURPLE family of products delivers innovative performance that goes well beyond what’s possible with standard drywall. While all gypsum-based drywall is naturally fire-resistant, the PURPLE family of products is unique because it also resists moisture, mold and mildew.

How thick is a 1 hour fire rated wall?

The most common fire rated drywall is known as type X, which is 5/8 inches thick, placed on each side of 2 by 4 or 2 by 6 inch wood studs and has a minimum fire rating of 1 hour.

How do you do a 30 minute fire resistant ceiling?

If the ceiling is plasterboarded, then 12.5mm thick boards are required to give 30 minutes’ fire resistance. You may have to provide an additional skim coat or additional plasterboard to the ceiling.

What is a 45 minute fire rating?

The IBC limits the use of 45-minute glazing to 25% of the wall area because it blocks smoke and flames but not radiant heat. Additionally, it must meet ANSI Z97. 1 and CPSC 16 CFR 1201 Cat. I or II impact safety requirements when used in doors, sidelites and other hazardous locations.

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. For cored units, the equivalent wall thickness is calculated by multiplying the percent solid by the wall thickness.

What is the fire rating of 1/2 Type C drywall?

Type C drywall is known as the more durable version of Type X—there are more glass fibers in this product as well as more vermiculite components, giving it a fire resistance of 2-4 hours. You can find this product at your local drywall and insulation store in 1/2” and 5/8” thickness.

What is a 2hr fire wall?

The SANCTUARY Two-Hour Firewall is constructed of two opposing and offset studded walls. Studs on each wall are set to standard 16 inches on center distance. When offset, the actual distance between opposing studs is 8 inches on center, creating an 8-inch cavity into which Greenfiber FRM Insulation is spray-applied.

How do you install fireproof drywall?

How to Firetape Drywall : Drywall Help – YouTube

How do you Fireproof an existing wall?

One of the most effective ways to add fire resistance to the exterior surface of a wall is to replace relatively flammable exterior wall treatments, such as vinyl or wood siding, with fire-resistant materials, such as brick, concrete or stucco.

Is fire rated drywall combustible?

The Building Subcode is concerned with the performance of a material under the conditions during a fire, while the Mechanical Subcode is concerned with performance during exposure to a constant high-heat source. Therefore remember, under the Mechanical Subcode, gypsum wallboard is classified as a combustible material.

Does drywall act as a fire barrier?

Drywall is relatively fireproof, but manufacturing processes such as adding glass fibers can increase the resistance. Drywall is relatively fire resistant. It’s composed of gypsum pressed between two sheets of thick paper. Gypsum is a soft mineral that by itself is not flammable.

At what temperature does drywall combust?

Originally Answered: What temperature does a drywall burn? Drywall is gypsum sandwiched between paper. Paper ignites at 451 degrees Fahrenheit.

Is Gyprock considered combustible?

Gyprock Party Wall Systems are ideal for use to provide fire separation between attached dwellings. Gyprock also has a broad range of non-combustible products that are suited for use with wall and ceiling systems in bushfire prone areas.

Is non-combustible the same as fire rated?

If something is non-combustible it will not burn under real-world conditions. It’s a simple, unambiguous quality. Fire-retardant materials, on the other hand, will contribute to a fire once the chemicals added to inhibit ignition have been overcome. The degree to which something is fire retardant is harder to quantify.

What is the most commonly used fire resistant material for interior walls?

What is the most commonly used fire-resistant material for interior walls? Gypsum board, also known as drywall, is the most commonly used fire-resistant interior finish. Type X gypsum board is treated with additives to improve its fire-resistance property, making it a popular choice.

When should you use 5/8 drywall?

5/8″ Sheetrock vs 1/2″ Sheetrock (Drywall) – YouTube

Do ceilings have to be 5/8 drywall?

When installed on ceilings, 5/8-inch-thick panels are less susceptible to sagging between the joists than 1/2-inch panels. Adding popcorn texture or another type of heavy surfacing material can add to the weight problem, making 5/8-inch drywall a better choice for ceilings.

What are the 3 main classifications of fire rated walls?

They include, Fire partition, Fire barriers, and Firewalls. IBC advocates that the different fire-resistance designs need to be constructed as per the separating space area. Each fire-resistant wall bears a unique fire-resistance rating rule, so choose the one that best suits your building occupancy or use.

What is the fire rating of 15mm FireLine board?

This 15mm fireboard plasterboard is one of the products within our plasterboard range that is certified to BES 6001 achieving a rating of ‘Very Good’.

What UL 263?

ANSI/UL 263, the Standard for Safety of Fire Tests of Building Construction Materials, and ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, were developed to simulate a building fire.

What is the difference between green board and PURPLE board?

What’s the difference between PURPLE drywall and traditional green drywall? Traditional green drywall (also known as greenboard) is only moisture-resistant. … PURPLE drywall stands up to what standard drywall can’t, including moisture, mold, mildew, scratches, scuffs, dents and sound.

What is green drywall?

Green board is a general term for drywall that can withstand high moisture or humidity. Although it is being phased out in modern construction, you might still come across it or need it for a project around the house. Green board is easier to install and less expensive than cement board alternatives.

Is durock better than sheetrock?

Mold resistant drywall is exactly as it states. It’s mold resistant. It is made just like regular drywall except that is had more fiberglass in it and the paper has less organic product in it.

What is required for 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. Put two sheets together on one side or use one sheet on each side of a wall.

What is the fire rating on 5/8 Type X gypsum board?

ToughRock® Fireguard X Gypsum Board

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.

What makes a 1 hour fire rated wall?

According to the Engineered Wood Association, a one-hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures, and support its full load, for at least one hour after the fire begins.