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| Glass drill bit
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Used to drill holes in ceramic tile or glass, this drill bit is either diamond or carbide tipped. |
| Glass felt
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In the manufacturing of roofing materials - a sheet comprised of bonded glass fibers prior to being saturated with bitumen; also short for asphalt or coal tar saturated fiberglass felt membrane. |
| Glass mesh mortar
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Unit 1Ú2 inch thick sheets of hard material composed of cement and fiberglass, which is used as a backing for ceramic tile or as an underlayment in showers, wherever a moisture barrier is needed, because it is waterproof. Cement board is installed much like drywall; the 3 x 5 foot sheets are cut to size and fastened using drywall screws. Joints are sealed with drywall joint tape and thinset mortar or the tile adhesive. Wonder Board and Durock are the two most well-known brands, with wonder board being used generically. It is also called cement board. |
| Glass mosaic tiles
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Tiles made of glass, usually in sizes not over 2 inches square and 1/4 inch thick and mounted on sheets of paper. Sheets are usually 12" x 12". |
| Glass pliers
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Also called glazier's pliers, they have either rubber faced jaws or jaws made of plastic to hold the section of glass to be removed. |
| Glass-base
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Roll roofing product built on a fiberglass base sheet constructed with a heavyweight tamko fiberglass mat, coated with weathering-grade asphalt. Used as a base sheet in select tamko modified asphalt and fiberglass roofing systems and as an alternate for tamko type 43 coated base sheet in any tamko specification. Hot-asphalt applied or mechanically fastened. |
| Glass-seal
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3-Tab self-sealing fiberglass shingles with a traditional square-tab design. A thick layer of weathering-grade asphalt gives them extra waterproofing protection. They are u.L. Class a fire rated and backed by a 20-year limited warranty. Algae-resistant granules optional. |
| Glauber's salt
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A salt, sodium sulfate decahydrate, that melts at 90 degrees Fahrenheit; a component of eutectic salts that can be used for storing heat. |
| Glaucous
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Plant surface which is covered with a bluish-gray bloom. |
| Glaze
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A term used to describe several types of finishing materials. (1) A glazing putty is of creamy consistency and is applied to fill imperfections in the surface. (2) A glazing stain is a pigmented stain applied over a stained, filled, or painted surface to soften or blend the original color without obscuring it. (3) A glaze coat is a clear finish applied over previously coated surfaces to create a gloss finish. |
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