A Ludowici roof is crafted to last for centuries and your underlayment should be just as durable. Ludowici Pro 70 Underlayment provides superior roof deck coverage versus traditional felt underlayment. It does not curl or scuff and its rubberized asphalt content provides a more pliable membrane, proving itself to be less susceptible to damage during installation and saving on installation time by laying smoother. Ludowici Pro 70 does not decompose like felt, providing a much more stable and long lasting underlayment for your new Ludowici roof. TECHNICAL DETAILS Modifier: SBS Rubberized Asphalt Reinforcement: Fiberglass Mat (Asbestos-Free) Breaking Strength: MD 78 lb./in. ASTM D226, CD 57 lb./in. Moisture Content: less than .4% ASTM D226 Weight Per Roll: 68 lbs. Dimensions: 39 3/4" w x 32' 6" l Coverage Per Roll: 1 square Rolls Per Pallet: 36 © Ludowici Roof Tile, Inc. All Rights Reserved. APPROVALS & CERTIFICATIONS Exceeds ASTM D226 Physical Requirements Meets Class 1 Vapor Retarder as defined in the 2012/2015 International Building Code as tested per ASTM E 96 IAPMO ESR ER-487

LUDOWICI PRO 70 UNDERLAYMENTUSAGE: Underlayment Base Waterproof base for torch down APP, SBS & BUR system APPLICATION: Mechanically Attached Secure with 1" head nails / staples shall not be used *Meets Class I Vapor Retarder as defined by the IBC ADDITIONAL INFORMATION LEED Recycled Content: 0% Production Location: Fresno, California U.S.A. Physical properties shown are nominal, subject to normal tolerances of manufacturing and testing. Ludowici Roof Tile reserves the right to improve and change its products at any time without prior notice or advise.