The polyurethane foam is applied in a single step. Both parts of the adhesive are ready to use from the container – no mixing required – and are applied simultaneously in a 1:1 ratio through a static mix tip. It is applied in continuous ribbons or beads spaced 4, 6 or 12 inches apart, depending on the project and code requirements. There is no overspray, and it cures in minutes.
Helix Low-Rise Adhesive contains no volatile organic compounds (VOCs), chlorofluorocarbons (CFCs) or hydro chlorofluorocarbons (HCFCs).
It does not require mechanical fasteners, maintaining a puncture-free vapor retarder, preventing thermal bridging and protecting the structural integrity of the roof deck.
The bond created by Helix Low-Rise Adhesive provides wind uplift resistance, allowing it to be used on buildings in higher wind zones. In addition, it provides hail resistance when used as an adhesive for fleece-backed membranes.
Helix Low-Rise Adhesive comes in cartridge twin-pack tubes or two-tank sets. Both include one container of each of the adhesive’s two components – Part A and Part B. Cartridge twin-packs cover approximately 200-600 square feet of roof and tank sets cover approximately 1,000-3,000 square feet of roof, depending on bead spacing.
The cartridges fit most dispensing guns currently available on the market. Tank sets come with a Helix Gun Assembly (25-foot dual-hose with attached spray gun), petroleum packet, wrench, and 10 Tank Static Mix Tips. Contractors need not purchase specialty pumps or spray rigs. No external power source is required to run application equipment.
The DEXcell brand family includes three products:
1. DEXcell brand Glass Mat Roof Board
2. DEXcell brand FA Glass Mat Roof Board (for fully adhered membrane systems)
3. DEXcell brand Cement Roof Board (a lightweight cement board for the roofing industry that will withstand prolonged exposure to moisture)
National Gypsum’s new DEXcell family has gone through rigorous third-party testing and carry a number of approvals and meet various industry standards to resist mold and provide a fire barrier for commercial structures, such as schools, hospitals and hotels.
DEXcell Glass Mat Roof Board and DEXcell FA Glass Mat Roof Board are mold resistant gypsum boards designed for use as a coverboard and/or thermal barrier in commercial roofing applications. Both are produced in 1/4-, 1/2- and 5/8-inch thicknesses and 4-foot wide in 4- and 8-foot lengths. These products score and cut easily and are specially coated on the front, back and sides for easy handling.
DEXcell Glass Mat Roof Board is ideally suited for mechanically fastened roof systems and has coated fiberglass facers with an enhanced gypsum core.
DEXcell FA Glass Mat Roof Board is designed for fully adhered roof systems, and is manufactured with heavy-duty coated fiberglass facers with an enhanced gypsum core.
DEXcell brand Cement Roof Board is a lightweight moisture- and mold-resistant cement board designed for use as a cover board and/or thermal barrier in all commercial roofing applications. It provides a fire barrier and a thermal barrier. These boards are manufactured of Portland cement, lightweight aggregate and glass mesh that provide an exceptionally hard, durable surface. It is produced in 7/16-inch thickness and 4-feet wide in 4- and 8-foot lengths.