At your request: here are the 100 products and materials readers want to know more about

Building Products, May-June, 2004 by Stephanie Herzfeld

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56 Velux. the flexible-tube skylight installs in less than two hours, claims the maker. The snap-ring assembly system eliminates extra work so the skylight can be installed in four steps. It can be used virtually anywhere in the home, including closets, hallways, and even showers. 800-888-3589. www.velux-america.com. Circle 256.

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57 Closets by Techline. Authorized Techline dealers come to your clients' homes, evaluate their closet storage needs, and then design and install custom solutions. The firm integrates components such as jewelry trays, laundry bins, shoe cubbies, pull-out valets, and islands and benches to create complete closets. 800-356-8400. www.techlineusa.com. Circle 257.

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58 International Slate. Custom-punched for installation, this slate roofing is imported from China. The slate line, which absorbs little moisture, undergoes rigorous international testing, says the firm. The slate comes in black, antique green, dark green, and desert sand. Flooring and wall cladding also are available from the company. 810-919-1285. www.internationalslate.com. Circle 258.

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59 Schluter. Ditra waterproofing membrane gives solid and stable backing to wet-area tile, claims the maker. The polyethylene product has a grid structure that prevents the transfer of substrate stresses to tiled surfaces and equalizes vapor pressure, according to the manufacturer. A number of subsurface drainage systems also are available. 800-472-4588. www.schluter.com. Circle 259.

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60 Armstrong. Wood-look WoodHaven ceiling planks are ideal for kitchens and bathrooms because they resist humidity and sagging, the firm says. The 5-inch-wide by 78-inch-long planks are constructed of MDF and are coated with a cough, durable prefinished laminate. The interlocking tongue-and-groove pieces simply attach to wood joists or wood furring strips using the clips provided. 800-233-3823. www.armstrong.com. Circle 260.

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61 California Closets. In addition to Whirlpool's Personal Valet, many closet components are available from the firm, including adjustable shelving, maxi-bins, baskets, hidden portable laundry hampers, dresser drawer hutches, islands, shoe storage shelves, and sweater bins. Custom details such as recessed lighting, granite or marble countertops, and crown molding also are available. 800-274-6754. www.caldosets.com. Circle 261.

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62 Schluter. This low-maintenance shower assembly eliminates the risk of failure due to vapor and water penetration, the maker claims. The foundation of this water-tight assembly is the Schluter Kerdi-Drain, which is designed to ensure a simple, secure connection to the bonded waterproof membranes at the top of the assembly rather than below it, thus reducing the potential for leakage, efflorescence, and fungus and bacteria growth. 800-472-4588. www.schluter.com. Circle 262.

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63 Georgia-Pacific. The firm's two mold-resistant drywall products replace paper mats with glass. Following in the footsteps of the company's DensGlass Gold, an exterior gypsum sheathing used primarily in commercial construction, DensArmor Interior Guard features a glass mat facing on the back that faces the exterior wall. DensArmor Plus Interior Guard has glass mats on both the face and the back. 800-225-6119. www.gp.com. Circle 263.