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Gerhrke and Associates, Inc. began representing high performance roofing and waterproofing manufacturers in the commercial construction market in 2001. Allen Gehrke has been representing and promoting roofing and waterproofing products since 1993. He has been associated with American Hydrotech since 1993. Currently Gehrke and Associates represent American Hydrotech, Polyguard and Situra.
The recognized leader in the development, production and distribution of premium waterproofing and roofing products.
Polyguard has evolved into a Single Source manufacturer of Integrated Building Envelope materials.
SITURA is a globally recognized leading supplier of Waterproof Expansion Joints for roofing and waterproofing applications.
St. Paul Cathedral - St. Paul, Minnesota
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