5 Questions
What is a type of GWB that achieves higher wallboard density through the presence of fiber mesh embedded in the backside of the wallboard?
Abuse-Resistant GWB
What type of GWB is used to dramatically reduce sound transmission between rooms or dwelling units?
Sound Rating GWB
What type of GWB is available with various types of vinyl wall covering already applied, making it ideal for demountable partition systems?
Pre-Finished GWB
What type of GWB is designed to resist water damage and mold growth?
Moisture And Mold Resistant GWB
What type of GWB has a foil backing that provides added protection against moisture and vapor?
Foil Backed GWB
Study Notes
Types of Gypsum Wallboard (GWB)
- Fire-Rated GWB: used where fire-rated partitions or covering is required, with a core specially formulated with mineral additives to improve fire resistive quality
- Fire rating specified as 1-hour, 2-hour, 3-hour, and 4-hour, with 1-hour preventing fire and smoke from passing through the partition for at least one hour
- Most interior applications use 1-hour and 2-hour partitions
Water-Resistant GWB
- Used as backing for adhesive applied ceramic tile in moist areas, such as shower spaces
- Preferable to use Portland Cement Plaster or Glass Mesh Mortar instead of GWB where heavy-duty commercial shower-continuous wet is required
- Offers the same advantages as a traditional moisture-resistant board with added mold resistance in the core and paper
Moisture and Mold Resistant GWB
- Provides extra protection to fight against mold and mildew
- Suitable for all interior applications, including walls and ceiling or anywhere moisture and mold is a concern
Abuse-Resistant GWB
- Up to five times the impact resistance of regular wallboard
- Provides vapor barrier to prevent transmission of water vapor into exterior walls and ceiling spaces
Foil Backed GWB
- Provides vapor barrier to prevent transmission of water vapor into exterior walls and ceiling spaces
Pre-Finished GWB
- Available with various types of vinyl wall covering already applied
- Apply directly to studs or as a finish layer over gypsum board
- Ideal for most demountable partition systems
Sound Rating GWB
- Dramatically reduces sound transmission between rooms
- Used for interior wall assemblies, where sound transmission between rooms or dwelling units is a concern
Basic Components of GWB Partitions
- Framing: to which the gypsum wallboard is attached, main structure of the wall
- GWB: different types of GWB are available, gives the ultimate shape of the partition
- Trim: to cover corners and exposed edges of the frame
- Joint Treatment/Reinforcing tape: to conceal the joints and to give a finish look
This quiz covers the characteristics and specifications of fire-resistant partitions and coverings, including fire ratings and mineral additives.
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