Loading...
HomeMy WebLinkAboutFile Documents.612 W Main St.0266.2017 (3).ARBKMetShield® High-Temp Underlayment ©2013 Drexel Metals, Inc. All rights reserved. MetShield® is a registered trademark of Drexel Metals, Inc. DensDeck® is a registered trademark of Georgia-Pacific. ENERGY STAR name and logo are registered U.S. marks and are owned by the U.S. government. CAV-GRIP is a trademark of Carlisle Coatings & Waterproofing Incorporated. Warranty statements mentioned are outlines: complete Limited Warranty information is available on request. No other warranty expressed or implied is applicable. 1234 Gardiner Lane, Louisville, KY 40213 888-321-9630 toll-free • 502-690-6174 fax w w w . d r e x e l m e t a l s . c o m Replace water-damaged sheathing and sweep roof deck thoroughly. Priming: Priming is not required on clean, dry wood, metal or most polyisocyanurate surfaces. Masonry and exterior gypsum boards (such as DensDeck®) should be primed using an appropriate primer or adhesive. Some rigid insulation boards with porous or dusty surfaces may require priming to promote initial adhesion. Priming is required on all substrates when air or substrate temperatures are below 40°F (4.4°C). Adhesives such as CCW-702, CCW- 702WB, CAV-GRIP™ and CCW-AWP are approved for use with Drexel MetShield. Refer to your local building codes to determine acceptable product for use in your region. Selection of roof deck or insulation substrate and/or use of a primer or adhesive are the responsibility of the architect, specifi er or roofing contractor to determine based on the roof assembly and environmental conditions. Valleys, hips and ridges: Cut MetShield roofing underlayment into manageable lengths. Align over the center of the valley, hip or ridge. Remove release film. Press the middle of the membrane first before working toward the edges. For open valleys, cover MetShield roofing underlayment with metal valley liners. Eaves and rakes: Cut MetShield underlayment into 10-15' pieces. Remove 2-3' of release film and align the edge of the membrane, sticky side down, so it overhangs the drip edge by 3/8" (10 mm). Continue to remove release film and press as you move across the roof. Use a hand roller and/ or hand pressure to press into place. Overlap end laps a minimum of 6". MetShield roofing underlayment should reach a point 2' inside the interior wall line. Local codes may require additional courses. If additional courses are required, the top lap must be at least 3-1/2". Drip edges: At the rake edge, apply MetShield underlayment first and place drip edge on top. At the eave, apply drip edge first and place MetShield underlayment on top of the drip edge so that it overhangs drip edge by 3/8" (10 mm). For standard installation details, follow the MetShield detail drawings. For non-standard installation instructions, contact your local Drexel Metals representative. Metal roof underlayment: Under water-shedding metal roof systems or low-slope metal roofs with a minimum 1/2" slope, start at the low point and apply MetShield over the full surface of the roof deck. Review the metal roofing manufacturer’s instructions for limitations and precautions. Beginning at the eaves, apply underlayment from the low point to the high point of the roof, running the roll horizontally. Limitations • MetShield should be installed when air, roof deck and membrane temperatures are at or above 40°F (4.4°C). • MetShield should not be left exposed to sunlight for more than 120 days. • MetShield membrane should not be folded over the roof edge unless protected by a gutter or other flashing materials. • The primary roof system must be ventilated to prevent excessive moisture build-up in the interior structure. • Use caution during the installation of the membrane as it may become slippery when wet or covered with frost. • MetShield must not to be used in contact with flexible PVC material. • MetShield not approved for use in foam set tile applications. Physical Properties Surface Black/White Engineered Polyolefin Composite Film with Factory-applied Anti-skid Coating Membrane Rubberized Asphalt Product Characteristic Units Results Roll Length feet 66 Roll Weight lbs 55 Roll Size sq/ft 198 Roll Width inches 36 Typical Performance Properties Test Method Results Thickness ASTM D1970 40 mils Low Temperature Flexibility ASTM D1970 -45°F Adhesion to Plywood at 75°F ASTM D1970 35 lbs/ft Lap Seam Adhesion at 75°F ASTM D1970 21 lbs/ft Sealability Around Nail ASTM D1970 Pass Slip Resistance ASTM D1970 Pass Thermal Stability ASTM D1970 Pass Moisture Vapor Permeance ASTM D1970 0.02 perms Water Absorption ASTM D1970 0.5% Tensile Strength Machine Direction ASTM D412 250 psi Tensile Strength Transverse Direction ASTM D412 1390 psi Elongation at Break Machine Direction ASTM D412 250% Elongation at Break Transverse Direction ASTM D412 170% Packaging Information Boxes (rolls) per pallet 25 Product Specifications 10/19/2017