Drainage with buffer Q40 / Q40-C
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Urbanscape® Drainage with buffer Q40 / Q40-C Description Urbanscape® Drainage with buffer Q40 / Q40-C is a drainage and reservoir board (40 mm height) made from recycled polystyrene with excellent load-bearing capacity specifically designed for green roofs. The panels are perforated on one side to allow installation with the holes on the upper side for water retention. It is designed for flat and sloped green-roof systems with a slope of up to 20°. The drainage is made of high-quality plastic to ensure that the system is lighter and more compact in comparison with regular drainage layers. It complies with the FLL Guidelines for the Planning, Execution and Upkeep of Green-Roof Sites. Application Urbanscape® Drainage with buffer Q40 ensures the buffering of water in dry periods and rapid drainage of water in wet periods. Urbanscape® Drainage with buffer Q40-C is designed in such a way that it provides low runoff coefficient C. Both drainage types aerate the root system of the plants. Installation • Panels are perforated on one side, to allow water retention. Install the panels with the holes on top. • Cover the total roof area with the panels. • Cut out material where drain baskets must be installed. • For safety reasons and protection of the roofing membrane use a hook cutter for cutting the drainage panels. Do not use a sharp blade cutter or knife. • Urbanscape® Drainage with buffer Q40-C must always be placed above the Urbanscape® Geotextile 300-REC (500-REC). • Above the drainage Q40-C place a filter layer - Urbanscape® Geotextile 110 with an overlap of 10 cm Storage: UV resistant, after installation shall be covered

Technical Properties of Urbanscape® Drainage board Q40 & Q40-C Property Height Drainage with buffer Q40 Drainage with buffer Q40-C Rain water retention capacity Pallet weight Water flow capacity Compressive strength empty Compressive strength filled - by compression - 8 % C value ** * water flow under the sheet, σ = 20 kPa 0.05 ** build-up installation with Green Roll 40.4 cm substrate & Sedum-mix blanket *** wooden pallet not included (25 kg) Urbanscape® Green Roof System Benefits Complete solution Efficient installation High water absorption High thermal performance High acoustic...