Even the story of how a green roof wound up at the project is interesting.
The city of Lake Oswego held a series of community meetings to present the preliminary designs for the Bryant Road Pump Station. Despite the fact that the initial architect did an excellent job, the plans failed to win the community's approval for aesthetics, so city had to request a new design. The subsequent architectural firm, Ankrom Moisan was asked to come up with a new concept. As part of his well thought-out building design, firm architect Mike Kapp put a green roof on it. This time, the community residents overwhelmingly approved the design.

The specifications for this project required a very durable solution, and at least a 100-year lifespan for the construction. In this scenario the green roof would offer even less headache for the maintenance policy, since it protects the roof membrane against mechanical damage and UV rays. It just requires proper maintenance, like fertilizing the vegetation and cleaning the drain devices regularly.

Mike had one concern left, and that was the green canopy beyond the roof, which would contaminate the perimeter gravel strips over time. Though it could be controlled by following proper maintenance instructions, cleaning up the drains and replacing the gravel would not match the client's low maintenance requirements for the green roof. The solution has been provided by Diadem with its drain RNH channels. These sorts of channels have an opening at the bottom, so the water can flow directly into the drainage layers, not just in line through the outlets. On top of that the grilles filter major debris from the system, and it could be removed for cleaning out the channel body.

We believed we could add value with our knowledge and products to achieve the request of the owner for a properly working pump station for the public.