Drainage

From the concrete mix to the extra insulation, Bethesda Bungalows specifies foundations to ensure efficiency from the ground up. More

CeraLine linear shower drains are sleek solutions for drainage. More

Cosella Dorken. Delta-Floraxx serves as a water retention and drainage layer for green roof systems. The sheets, installed on top of a green roof systems root barrier, feature octagon-shaped dimples that retain water during drought periods, while holes in between drain excess water to eliminate plant rotting. A Delta-Biotop fabric layer is installed on top to hold the growing medium in place and prevent clogging. 888.433.5824. www.cosella-dorken.com. More

On-site wastewater treatment could become more commonplace in single-family homes during the next few years. More

On-site wastewater treatment could become more commonplace in single-family homes during the next few years. More

The 18-inch-by-22-inch tray includes retention cups, drainage channels, and perforated domes for ventilation and evaporation More

The SlopeGrid geocellular confinement system allows for green roofs on arched or sloped roofs by controlling erosion, promoting stabilization of the planting medium, and preventing vertical wind uplift, the firm says. Installed over a waterproofing membrane and a drainage/water retention mat, the 100% recycled HDPE strips expand into a honeycomb-like grid, which is filled with soil. The grid is secured to the roof by a tendon system. 888.851.0051. More

From Iron Age Designs More

Completed in August 2007, this extensive 4-inch (102-mm) vegetated roof spans approximately 1,400 square feet (130 m2). More

Contemporary attached units boast green features such as a green roof, low-flow toilets, and attention to daylighting. More