Avalon Hayes Valley, San Francisco

The exposed plywood substrate with solar stanchions attached to the substrate. Building owners will never have to replace their roof insulation again and building occupants will enjoy the comforts of the construction industry’s most progressive roof underlayment system, light weight insulated concrete.

Jumbo Tex paper was installed over the plywood substrate prior to application of the light weight insulating concrete. Wind screen supports are attached to the substrate to provide protection from the weather. Jumbo Tex is a weather-resistive barrier that protects buildings from problems caused by water intrusion and excessive moisture.

This is the view of the finished light weight insulated concrete pour, which consisted of 420 cubic yards of concrete. Solar supports are attached to the substrate, and the surface is sloped so it can properly drain. Now the roof is ready for membrane application.

Installation of the roof membrane is nearing completion. Cell-Crete Corporation was able to design a sloped Lightweight Insulating Concrete system that provided positive sloping around the multiple mechanical units. Cell-Crete's roof membrane system is made to last. The system can be easily dried out or patched up if needed.

The building utilized wood frame construction over a podium slab. The roof decks had solar panel attachments that posed design difficulties for cricketing with tapered polyisocyanurate roof insulation. By utilizing Cell-Crete Corporation to assist in the design, layout and installation of the LWIC roof system, Avalon Bay communities saved time on their schedule and money in their budget.

The finished project with a pedestal paver system installed on top of the light weight insulated concrete system. A recreation patio featuring an outdoor bar, lounge chairs, barbecue grills, televisions and natural gas line fed patio heaters was installed for the residents of the buildings on the roof.

Solar panels installed on supports attached to the deck after the roofing was installed. The solar panels offered an element of sustainable design for the project. The system provided a top-down fire resistant barrier in the case of combustion of any of the components on the roof.

Planter boxes and roof plants were installed with a crushed quartz decorative band along the base of the perimeter walls. By utilizing Cell-Crete Corporation to assist in the design, layout and installation of the LWIC roof system, Avalon Bay communities saved time on their schedule and money in their budget.

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