Landscape Architect & Specifier News

APR 2014

LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.

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What's underneath a planted roof? Well, for the new fourth- story plaza green roof deck built over the parking garage of the condominium building at 1000 Lake Shore Drive in Chicago, the architect/engineer, Wiss, Janey, Elstner and Associates, specified installation of 5,000 sq. ft. of EPS insulation (Foam Control Plus+ tapered 600 EPS) over rubberized asphalt waterproofing. EPS, or expanded polystyrene, is a rigid plastic made from petrochemicals in the form of "preexpanded polystyrene beads." EPS is used for disposable trays, bowls, plates and those to-go white plastic hinged-lid containers, plus for shipping "peanuts." For building insulation purposes, EPS comes in rigid sheets 2x8 or 4x8 known as "bead-boards." The EPS boards insulate the garage roof, provide compressive strength and create a slope for drainage. According to the building contractor for this project, Eric Dexter of Berglund Construction, the EPS large 4x8 sheets from ACH Foam Technologies sped up the construction significantly. 143 LASN Marketplace, April 2014 Decorative Water Features I n f o r m a t i o n R e q u e s t # 4 3 4 I n f o r m a t i o n R e q u e s t # 7 0 7 I n f o r m a t i o n R e q u e s t # 7 6 4 I n f o r m a t i o n R e q u e s t # 4 4 6 I n f o r m a t i o n R e q u e s t # 4 6 2 I n f o r m a t i o n R e q u e s t # 2 1 6 aCh Foam technologies' tapered Foam Control Plus+ 600 ePs insulation was specified for the foundation for the green roof plaza deck for this Chicago condominium building on Lake shore drive. Beneath the Green 135-147 MP.indd 143 3/28/14 8:51 AM

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