This information reflects our best understanding of product composition in 2020.
This Common Product (CP) covers mold-resistant drywall intended for interior walls and ceilings in areas that have periodic elevated humidity. Examples include bathrooms, kitchens, laundry rooms, and utility closets. These products are not,...
This Common Product (CP) covers mold-resistant drywall intended for interior walls and ceilings in areas that have periodic elevated humidity. Examples include bathrooms, kitchens, laundry rooms, and utility closets. These products are not, however, intended for use in areas that are continuously wet such as in saunas or as tile backer for showers or tubs. Mold-resistant drywall typically has a gypsum core sandwiched between recycled paper that has been treated with a biocide. In addition to the treated paper, wax or silicones are added to the gypsum core to make it more moisture-resistant. Some products add a biocide to the core to increase mold resistance as well. Standard mold-resistant drywall panels are 1/2", and most also come in a 5/8" type X option. The latter includes typical additives, like fiberglass and vermiculite, found in type X drywall to increase panel strength and fire resistance. Many mold-resistant drywall specialty products are also available, such as 1/2" Type C panels, and high impact or high abuse panels. Such products likely contain additional additives not identified in this CP, which covers standard 1/2" panels. Some mold-resistant drywall products are wrapped in a fiberglass mat instead of treated paper. These products may be used in exterior applications before the bulding envelope is enclosed and are out of the scope of this CP. This CP addresses drywall made with flue-gas desulphurization (FGD) gypsum. There are not significant differences in the composition of finished drywall products made using different gypsum sources, but natural gypsum is preferred over FGD gypsum because the FGD drywall production process can release mercury into the environment.
This is not necessarily representative of all possible content that may be found in this product type. It includes all of the potential content identified during the research process for this Common Product profile. All Content data goes beyond the most common chemicals and materials to provide a more comprehensive representation of what may be found in specific product types. It does not necessarily include all chemicals and materials that may be used by all manufacturers and should not be used as a replacement for a specific manufacturer's product disclosure.
What are Common Products?
A Common Product profile (CP) is a list of substances that are most commonly present in a product type (vinyl composition tile, for example) as delivered to building sites in North America. The profiles are not specific to any manufacturer.
CPs are organized by chemical function. Every substance in a product performs some function - for example, it thickens a paint, or gives a carpet resistance to stains. The CPs provide the most common substance serving each function in a given product type, the hazards these substances carry into a building project, and a general description of the product type. CPs are based upon a wide range of publicly available information, including product declarations, patents, and chemical suppliers' brochures that detail the functional uses of various additives.
For those wanting more than the most common chemical for each function, Pharos subscriptions provide access to the full catalog of possible ingredients that we’ve found may be in products. Where available, these are displayed in the All Contents tab.
The GreenScreen® for Safer Chemicals is a benchmarking system to rank the safety of chemicals on a 4 point hazard scale and encourage progress toward safer alternatives. Chemicals that have undergone a full GreenScreen assessment by Licensed GreenScreen Profilers are given a Benchmark score, which is the most authoritative. Chemicals that have been assessed using an automated comparison to hazard lists are given a List Translator score, which is less authoritative. Full GreenScreen assessments trump results from List Translator scoring.
GreenScreen Scores in order from highest concern to lowest concern are: