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The Daily Insight

Is all drywall fire rated

Author

William Taylor

Published Mar 01, 2026

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.

Is standard drywall fire resistant?

A standard 1/2′ drywall can offer up to half an hour of fire resistance. It is used in most common areas of the house because it has a lower cost. The real fire rated drywall has to be certified by a third party.

What type of drywall is fire rated?

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 a fire exposure.

How can you tell if a drywall is fire rated?

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.

Which walls should be fire rated?

Structural elements that brace the exterior wall but are located outside of the exterior wall or within the plane of the exterior wall shall have the minimum fire-resistance rating required in Tables 601 and 602 for the exterior wall.

Is moisture resistant drywall fire-rated?

ProRoc® Moisture Resistant is available in 12.7mm (1/2″) thickness, as well as in 15.9mm (5/8″) thickness with Type X core. The gypsum core is inherently fire-resistant and non-com- bustible, which means that ProRoc® Moisture Resistant products provide a margin of fire protection to any building system.

Are garage walls fire rated?

What about the wall between the house and garage? The wall between the house and garage is not a firewall, nor is it a fire-resistance-rated wall. The wall between a house and an attached garage does have some special requirements, however.

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.

What insulation is fireproof?

Fiberglass: Made of glass that is spun into fibers, then combined with plastic polymers, fiberglass insulation is naturally fire resistant.

Is drywall combustible material?

Gypsum board, because of its combustible facing, will not pass ASTM E136. … Therefore remember, under the Mechanical Subcode, gypsum wallboard is classified as a combustible material.

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How do I know if my wall is fire rated?

The total fire rating is determined by adding each component to reach a minimum total of 60 minutes. Fire protection rating is calculated from the flame side of the assembly and of course some assemblies have multiple flame sides. Your wood framing members are required to be not more than 16″ on center.

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.

Does my garage ceiling need to be fire rated?

In most communities, building codes require the construction of a fire-rated barrier between the garage and any living space. Attached garages must have a firewall separating the garage from the house, and if a bedroom or apartment is over the garage, a fire-rated ceiling is in order.

Do I need a fire door from my garage to my house?

1, a fire-rated door or its equivalent is required. … Other openings between the garage and residence shall be equipped with solid wood doors not less than 13/8 inches in thickness, solid or honeycomb-core steel doors not less than 13/8 inches thick, or 20-minute fire-rated doors, equipped with a self-closing device.

What is 2 hour fire rated wall?

2. 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. The “Fire Tape” product would be used as an alternative to conventional joint tape in specific systems when: 3.

Can I use regular drywall in my garage?

What Type of Drywall Should I Use for My Garage? For the majority of your garage, you can use standard 1/2 inch drywall. For the ceiling and wall abutting the house (if this is an attached garage), you should use 5/8-inch sheetrock or type X fire-rated drywall. Always check your local building codes.

Is all drywall mold resistant?

Installing moisture resistant drywall in the bathroom can help prevent growth of mold. … Regular drywall will not protect your property from water and mold damage. You will have to replace your cheap drywall if it’s exposed to moisture or mold.

Is mold resistant drywall fireproof?

In some cases, building codes will require them. The two most commonly used types of drywall after standard are: Mold/moisture resistant. Fire resistant.

How flammable is pink insulation?

Since the insulation is made from glass, fiberglass insulation is considered non-flammable and will not catch fire. … Fiberglass manufacturers can add flame-retardant adhesives and foils to kraft paper backings.

Are Pink Batts fireproof?

Pink® Batts® glass wool insulation passes combustibility tests, making it suitable for use as part of a passive fire system. An insulation product, if chosen correctly, can complement both passive fire and active fire protection to safeguard lives in the event of fire.

Is Pink Panther insulation fireproof?

FiRE RESiStANCE Fiber Glass – Owens Corning PINK Fiberglas™ is naturally non-combustible and is classified as such per ASTM E 136. Cellulose – is made from paper and other wood-based, combustible materials.

Whats better green or purple drywall?

“Green drywall (also known as greenboard) is only moisture-resistant. PURPLE®drywall, only made by National Gypsum, is superior because it offers moisture, mold and mildew resistance. In addition, many PURPLE® drywall products offer added benefits, including resistance to scratches, scuffs, dents and sound.

What color is fire resistant drywall?

We offer multiple products based on your building codes and construction requirements. Type X fire-rated drywall has a gypsum core enclosed in ivory-colored face paper. This product is used in fire assemblies from 1 hour up to 4 hours. A one-hour fire-rated assembly is the standard for many building codes.

Where is fire-rated drywall used?

A: Fire-rated products are not typically used in single-family residential construction except for garages. These products are primarily used in commercial construction (high rises, office buildings, industrial, institutional) and any space requiring an area separation wall such as a hotel or multi-family home.

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.

Can you use drywall around a fireplace?

Drywall + Fireplace = House Fire Unfortunately, this is highly flammable and is not an appropriate or safe fireplace surround. The sheetrock had to be removed and replaced with any type of non-combustible surround – stone, tile, marble, or metal.

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.

How do you determine fire rating requirements?

Fire-resistance ratings are determined by testing a mock-up structural assembly according to procedures in the American Society for Testing and Materials (ASTM) E119 Standard Test Methods for Fire Tests of Building Construction and Materials, available at The test also is known as NFPA 251, Standard …

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 can I get a 30 minute fire rating?

If you wish to keep existing doors in place because of their architectural or historical merit, these will need to be upgraded to give 30 minutes’ fire resistance. This can be achieved by the application of special fire resisting paints, papers or varnishes (intumescents).

How do you fireproof a garage wall?

You can reinforce your garage walls and ceiling by adding gypsum board to any part of the garage or ceiling that connects to the main home, which will minimize the possibility of a fire in the garage reaching the house. You should also make sure that you have a fire extinguisher and heat alarm in your garage.