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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71 Georgia-Pacific. Manufactured with plywood backed by aluminum foil, GP radiant barrier roof sheathing reflects up to 97 percent of the sun's radiant heat, the firm says. The 4-foot-by-8-foot panels can lower attic temperatures by as much as 30 degrees. Less heat is transferred into the living space through the ceiling so indoor temperatures stay cool, the firm says, while the cooling system's efficiency can be increased. 800-284-5347. www.gp.com. Circle 271.

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72 Watts Radiant. SunTouch electric radiant floorwarming mats are the UL-listed solution for use under existing wood subfloors, says the firm. The mats feature woven-in heating elements and are available in many lengths. They are installed between floor joists within an inch of the subfloor underside. The firm's radiant heat mats can be used in both kitchen and bath applications. 888-432-8932. www.suntouch.net. Circle 272.

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73 DuPont. Tyvek FlexWrap flashing tape for window sills and custom shapes is an elastic material made with polyolefin film and a highly adhesive, self-sealing butyl. The product features backing that peels off and adheres to keep water out. It is wrapped into the sill rough opening before the window is installed, making one-step, seamless protection possible. 800-448-9835. www.tyvek.com. Circle 273.

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74 Wirsbo. The Quik Trak system features wood panels attached to aluminum heat transfer sheets that can be installed over plywood subfloors. Grooves down the center of the panels hold tubing. The 1/2-inch-thick panel profile adds hardly any floor height, making it ideal for remodeling applications, says the firm. 800-321-4739. www.wirsbo.com. Circle 274.

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75 Richelieu. The 20-watt recessed halogen fixture is designed for installation in kitchen cabinets and displays. It features an ultra-polished aluminum reflector bulb and requires a depth of only 5/8 inch. The 20-watt unit also is available as a surface-mounted fixture. The firm offers more than 30,000 products for furniture, woodworking, and kitchen cabinet hardware applications. 800-619-5446. www.richelieu.com. Circle 275.

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76 Pyrolave. Enameled volcanic lavastone is impact-and scratch-resistant and available in a variety of colors. It can be used both indoors and outdoors for applications such as countertops, floors, walls, and decorative motifs. This French product is available in pale shades, earthtones, and bright colors. 919-788-8953. www.pyrolave.com. Circle 276.

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77 Diamond Spas. Custom stainless steel stairways are an addition to the firm's extensive product line. Stairways are available in varying sizes and can accommodate more than a 180-degree rotation. The firm also manufactures stainless steel kitchen sinks and copper tubs and sinks for the bathroom. 800-951-7727. www.diamondspas.com. Circle 277.

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78 Increte Systems. Paver Sealer is a clear coating that protects all types of surfaces, including decorative concrete, from soil, grease, oil, acid, and alkali, according to the firm. In addition to sealing the surface so it's non-porous, the formula also imparts a natural wet look and inhibits harmful UV rays from discoloring the surface. The sealer is non-yellowing and will not peel, chip, or flake, says the maker. 800-752-4626. www.increte.com. Circle 278.