Kemper System America Inc. announced that it is building on its strength in liquid-applied waterproofing with the acquisition of STS Coatings Inc. (Comfort, Texas) and its four major brands to address more than waterproofing across the ‘Building Envelope.’

“Specifiers want to work with strong suppliers that can solve multiple ‘Building Envelope’ challenges, including walls and foundations, and this greatly extends our range,” says Richard Doornink, president and managing director, Kemper System America.

“These proven brands offer significant cost-performance advantages, and will continue to be available through existing and new distribution channels, including retail. Liquid-applied products are easier to transport to the jobsite, are economic to install, and have the most flexibility for application to a wide variety of surfaces.”

  1. Wall Guardian Air Barrier. This spray- or brush-applied water-based liquid air barrier system offers three benefits in one -- air barrier, water barrier, and vapor retarder. It is for use in cavity-wall constructions, including CMU/brick veneer, steel stud, insulated (continuous insulation), and insulated tilt-up construction.
  2. Roof Guardian Technologies (RGT). These liquid-applied elastomeric roof coating systems help prolong the life of roofs, including metal, smooth-surfaced BUR, polymer-modified asphalt and single-ply roof systems. The RGT line includes 12 products including two Cool Roof rated systems, and two ENERGY STAR certified systems.
  3. HeatBloc Ultra Radiant Barrier. This low-emissivity, water-based (low-e) aluminum coating is engineered for attic spaces. Applied to interior underside of the roof deck, it can block over 80 percent of radiant heat to reduce cooling requirements.
  4. GreatSeal Construction Sealants. This premium line of caulks and sealants is widely used on doors and windows, masonry, roofing and siding. All products in the GreatSeal line are 100 percent solids, with no solvents and very low VOCs, and formulated for performance even in damp, dry or cold conditions down to 40 F.

“There are obvious synergies with distribution and our existing lines, and we intend to build these in the marketplace,” Doornink said. “For example, Roof Guardian Technologies elastomeric coatings now make us competitive on many more building envelope projects with a much lower price point. In addition, HeatBloc moves us into retail, which blazes a trail for other opportunities.”

Doornink said the news is also in keeping with Kemper System America’s vision for 2020.  “We intend to continue growing through strategic acquisitions as we become far ‘More Than Waterproofing’ for our building products customers.”

Kemper System has been a global leader in cold, liquid-applied, reinforced roofing and waterproofing technology for 60 years, having invented the technology and holding the first patents. Kemper System is also a leader in solvent-free and odor-free liquid-membrane systems and provides long-term, built-to-last solutions for: white roofs, green roofs, blue roofs, new roof assemblies, existing roof recovery, metal roofs, balconies and terraces, plazas, historic restoration, gutterways, interior and industrial applications and below-grade waterproofing.

Kemper System America is a wholly owned subsidiary of Kemper System GmbH & Co. KG | Holländische Straße 32-36 | D-34246 Vellmar. Kemper System is part of the IBG group of Companies, a mid-sized industrial holding company with more than 50 sales and distribution, as well as production companies all over the world.

For more information, visit or contact Kemper System ( at, or call 1-800-541-5455.