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PRODUCTS & TECHNOLOGY: Green Roof Waterproofing System

Monday, December 1, 2008

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Dow Hyperlast introduced the VERDISEAL™ Green Roof Waterproofing System, comprised of a primer, elastomeric membrane, and high-performance wear coat. The system is reported to produce a monolithic, seamless waterproofing barrier that can be easily applied to complex shapes, with adhesion to flat and horizontal surfaces, as well as combinations of levels and undulations.

 

The 2mm, 80-mils-thick membrane keeps the surface sealed, protecting against water leakage, mineral-residue leaching, garden chemicals, and oil spillages, and resisting root penetration, the company says Damage can be repaired locally, without removing the whole membrane, to minimize replacement and disposal costs.

 

The waterproofing system is supplied in liquid form, and is applied by spray or hand, without the need to use hot bitumen or reinforcing sheets or flashings. The wear coat is comprised predominantly of a polyol derived predominantly from renewable resources. The system can be applied in temperatures as low as 5 C

(41 F), and is ready for use within hours of application. The membrane is strong enough to withstand full construction traffic without the need for protection board, the company says.

 

Dow Hyperlast is a division of Dow Polyurethanes, a business group of The Dow Chemical Company.

 

More information: www.dowhyperlast.com, www.verdiseal.com.

   

Tagged categories: Green roofs; Roof gardens; Waterproofing

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