Case Study

Barrel Roof Solution

TerraGen’s ability to custom design projects helped overcome a site-specific challenge, a barrel roof, by preventing roof penetrations.

The Challenge

A school board in Ontario, Canada had a portfolio of elementary schools that wanted to install solar. The schools had many different roof sections and roof types, which required varying designs. Several of the schools had barrel roof sections which were required to be utilized to meet the desired photovoltaic capacity. Many of the domed roofs were over gymnasiums, so it was important to minimize the quantity of mechanical attachments.

The Solution

TerraGen was able to offer a custom solution. This helped to maximize the number of panels, while significantly reducing the mechanical anchors.

On the curved roof section, TerraGen designed a zero degree system to follow the curve. The base rails on the roof and ballasting the system for uplift allowed for a minimal quantity of anchors.

TerraGen strategically designed roof contact points through the base rails and custom designed splices. These helped absorb the angular changes between rows while maintaining the rigid structure. A TerraGen rep was on site during installation for training and direction, which resulted in a faster and more efficient installation.

The Result

TerraGen’s ability customize individual project needs helped overcome the site-specific challenge, which would have otherwise required thousands of roof penetrations. The school board was able to achieve their solar production requirements and foster a positive environment in the community.