The History and Innovation of Weather-Resistant Substrates
Extended Exposure Meets Its Match
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Warren Barber
Warren Barber is product manager of National Gypsum’s eXP Brand specialty systems. He joined National Gypsum Company in 2012. Involved with the development, sales and marketing of construction materials for more than 25 years, Warren has conducted architectural and contractor training throughout North America, the Caribbean, Mexico, UAE and Qatar. He is co-author of an ASTM White Paper (published in 2016): “Use of Glass Mat Gypsum Sheathing As A Substrate For Exterior Insulation And Finish Systems (EIFS).” He can be reached at warrenb@nationalgypsum.com.
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