What is the difference between a C and a X drywall?
What type of drywall is used in shaft walls?
How long does a type X crack?
Where do you put fire rated drywall?
Is C drywall the same as X drywall?
Is fire resistant drywall UL certified?
Is C drywall more expensive than X drywall?
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What is the main purpose for Type X or Type C drywall?
But type X and type C drywall are both specifically designed to resist fire and thus increase safety.
What is Type C drywall used for?
CertainTeed Type C Fire Resistant drywall accepts most types of paints, textures and wall covering materials.
How can you tell if drywall is X type?
Type X drywall has special core additives that allow it to be used in fire rated designs and usually comes in 5/8” thickness. 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.
What is Type C fire rating?
A Class C or Class 3 fire rating has a flame spread rating between 76 and 200. This rating incorporates building materials like plywood, fiberboard, and hardboard siding panels.
Is Type C drywall moisture resistant?
Overview. Sheetrock® Brand Mold Tough® Panels Firecode® C (UL Type C) are 1/2 in. (12.7 mm) enhanced proprietary Type X gypsum panels that feature a noncombustible, moisture-resistant gypsum core that is encased in moisture- and mold-resistant, 100% recycled green face and brown back papers.
What are the different types of drywall?
6 Common types of drywallRegular drywall. Regular drywall, often called white board, is the most common type used in ceilings and walls in homes and commercial projects. ... Mold-resistant drywall. ... Plasterboard. ... Soundproof drywall. ... Fire-resistant drywall. ... VOC-absorbing drywall.
What type of drywall is fire-resistant?
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.
What is the fire resistance of 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 fire code X drywall?
The first fire code product is called type X drywall, which is made from gypsum that has noncombustible glass fibers. The material used for this product increases its fire rating to a minimum of an hour and is usually installed in projects such as area separation firewalls, shaft walls, and stairwell walls.
Why is Fire-Rated Drywall Important?
No matter where you’re or what you’re building, using quality fire-rated drywall is essential. Not only is it simply good practice, but it is also usually required by state codes and local building codes. When dealing with residential buildings and homes, fire rated drywall is often found in the following areas:
Is fire rated drywall required?
For commercial buildings , fire rated drywall will usually be a requirement for most of the building’s ceilings and walls for fire partitions and assemblies, a staple for safety.
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 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.
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.
Do you need a C panel in a ceiling?
So, while it is a common industry assumption that Type C panels are required in ceilings and Type X panels for walls, the use in any given application is not limited by panel Type, so long as the panel has been evaluated and approved for such use.
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.
Why is Type X drywall used?
To help reduce the extent and severity of fire damage, Type X drywall was developed with glass fibers made to reinforce the gypsum core. This strengthens the board, allowing it to last longer during a fire. The amount of time that gypsum panels maintain their physical integrity under fire conditions is crucial for allowing occupants to escape.
What is a type C panel?
Type C is designed with a higher percentage of glass fibers than Type X, allowing it to be more resistant under fire conditions. The core of Type C also contains a shrinkage-compensating additive called vermiculite, designed to extend the fire-rating even further by expanding in ...
When was fire rated drywall invented?
The development of fire-rated drywall has come a long way since its inception in the 1940s. Originally created to meet the needs of the growing urban population of the United States, today it is a common feature of homes and businesses around the world.
What is Type X drywall?
Type X drywall is made with special noncombustible fibers.
What is the thickness of drywall?
It probably is the most economic drywall type and comes in different sizes ranging in thickness from 3/8 inches to one inch. This is the most common type used and is normally available in four by eight foot panels.
What is soundproof drywall made of?
Soundproof drywall is composed of laminated drywall made with a mix of wood fibers, gypsum, and polymers increasing the STC (sound transmission class).
What is the advantage of drywall?
One important advantage that drywall offers is the presence of tapered edges on the long edges of drywall sheets that, when joined together, form a shallow recess for drywall tape and joint compound that allows for invisible finished joints. There is also an ECO board made from recycled material to create drywall that looks like concrete.
What is blue board drywall?
Blue board drywall is also known as plaster baseboard. Blue board is used for veneer plastering, and the surface paper has special absorption qualities.
Is blue board drywall good for mud?
It has a high water and mold resistance and there are fewer steps involved in veneer plastering. Blue board drywall is not made for mud, tape, or paint. It works extremely well in bathrooms or places with a lot of moisture and helps reduce noise.
Is purple drywall the same as regular drywall?
Purple drywall offers the same advantages as regular drywall, but with superior moisture- and mold-resistant characteristics.
What is fire resistant drywall?
CertainTeed Type C fire resistant drywall is an interior gypsum board consisting of a solid set, fire-resistive, Type C gypsum core enclosed in ivory-colored face paper and a strong liner back paper. CertainTeed Type C board features a specially formulated Type X core providing superior fire performance when used in specific fire-rated Type C assemblies. Long edges are slightly tapered, allowing joints to be reinforced and concealed with joint tape and joint compound. CertainTeed Type C fire resistant drywall is available in a variety of lengths and widths.
What is certaineed type C?
CertainTeed Type C Fire Resistant drywall accepts most types of paints, textures and wall covering materials. The surface shall be primed and sealed with a full-bodied latex primer before applying a final decorative material. This will equalize the suction between the joint compounds and the paper surface. For best painting results, all surfaces, including joint compound, should be clean, dust-free and not glossy. If glossy paints are used, a thin skim coat of compound over the entire surface, Level 5 finish, is recommended to reduce highlighting or joint photographing. This method is also recommended for areas of critical sidelighting of natural or artificial light sources. A sealer application under wallpaper or other wall coverings is also recommended so the board surface will not be damaged if the covering is subsequently removed during redecorating. Joint treatment must be thoroughly dry before proceeding with primer-sealer application and final decoration. Applicable Standards and References ASTM C840 GA0216 GA-214 Consult the GA-600 Fire Resistance Design Manual or UL Fire Resistance Directory, Volume 1 for specific information regarding the construction of fire resistance rated assemblies.
Does CertainTeed gypsum affect air quality?
Although LEED rating systems do not currently address emissions for all building materials and their effects on indoor air quality, finished Certain Teed gypsum board products have no reportable VOCs and will not affect indoor air quality.
What is the difference between a C and a X drywall?
Type C drywall is the improved version of the x type. This fire-rated drywall type is available in 1/2” and 5/8” thicknesses and its gypsum core still consists of glass fibers. The difference with this type of drywall is that it contains more glass fibers than its x type counterpart and also additional vermiculite components. These extra qualities make it even more resistant to fire since it will slow its spread by 2-4 hours.
What type of drywall is used in shaft walls?
Please note that there is a type X Shaftliner drywall type with even greater fire rating qualities but this one is installed in shaft walls, stairwell enclosures, and area separation firewalls.
How long does a type X crack?
As for out two contestants, type X kept strong for 57 minutes before it started cracking whereas type C lasted for a little over two hours without failing at the end.
Where do you put fire rated drywall?
Drywall companies install fire rated boards around boilers and on walls separating the garage and the house. That’s because the fire rated boards are more expensive than the standard ones and the rest of the structure and things inside the house are not always fire resistant either. There are differences between the type x and type c drywall.
Is C drywall the same as X drywall?
There are differences between the type x and type c drywall. Although the type c drywall comes in thinner boards and that makes installation easier to drywall contractors, this type of board is not recommended for all applications. Type C drywall is only 10% more expensive than type X drywall. Yet, the two types shouldn’t be used interchangeably.
Is fire resistant drywall UL certified?
The good news is that fire- resistant drywall hit s the market once it is certified by a third party. And the even better news is that the designations of UL point out the best applications of each drywall type.
Is C drywall more expensive than X drywall?
Type C drywall is only 10% more expensive than type X drywall. Yet, the two types shouldn’t be used interchangeably. One of the most important distinctions between the two fire-rated drywall types is that type C performs better when it is installed horizontally.
Fire-Rated Construction and The Benefits of Gypsum Board
Building Up Post-War America
- World War II, the most devastating and widespread war in modern history, devilishly fueled the American economy. Advancements in aviation, electronics, and medicine took off faster than could have ever been imagined. Ultimately, it created a new world at home, with the country wanting to return to the safety of living the American dream—getting married, buying a house, a…
The Introduction of Type X Board
- With the growing population, increasing the fire resistance of gypsum panels in the event of a fire was the primary concern of manufacturers during the 1950s. 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, …
Understanding Industry Gypsum Panel Type Definitions
- To this day, industry stakeholders desire clarification on where Type X and Type C panels can, and should, be used. This begins with an understanding of the different panel Types as defined by the industry. ASTM C1396, Standard Specification for Gypsum Board,categorizes gypsum board into only two groups: regular and special fire-resistant (Type X)....
Advancements in Lightweight Gypsum Board in Fire-Rated Construction
- Contractor demand for products that improve productivity and save money, especially as skilled labor and costs skyrocket, has been the driving force for greater innovations. The introduction of ultralightweight panels has been one of the most significant advancements in construction efficiencies since USG commercialized gypsum panels in 1917 under the namesake “Sheetrock…
in Conclusion…
- Building design presents countless challenges, and USG has been designing and testing fire-resistance assemblies for use in commercial and residential construction for over 100 years. When it comes to fire protection, USG established most of the fire testing procedures currently used by UL and has developed approximately 75% of all original UL wall and floor- and roof-ceili…