When a commercial building needs both a new roof and solar panels, most owners end up dealing with two contractors and two separate warranties. That leaves a grey area exactly where the two meet: the fixings, penetrations and seals between the roof and the array.
From today, when Cornerstone fits your new roof and installs your solar system, both are covered by a single combined 30-year warranty.
Why roof and solar belong together
A solar array is designed to generate for decades, so it needs a roof that will last at least as long underneath it. Fitting new panels to a tired roof is a false economy: if the roof needs work in a few years, the array has to come off again, with all the cost and downtime that brings.
Because our roofing and renewable energy teams sit in the same group, we can replace the roof and install the array in one coordinated programme. That is something we have already delivered for clients such as Booker Watford and Booker Newton Abbott.
What the 30-year warranty means for you
- One warranty, one provider. The roof and the solar system are covered together for 30 years, so there is no question of who is responsible if an issue ever arises.
- One coordinated programme. Our teams plan the roof and the array as a single job, sharing access and scaffolding rather than mobilising twice.
- One point of contact. One team to call for the whole life of the roof and the array.
Two contractors means two warranties and a gap in the middle. One team doing both means one warranty, and nothing falls between the cracks.
Who it is for
The combined warranty suits any business planning solar on a roof that is ageing, leaking or due for replacement, from factories and warehouses to farms and retail sites. It applies when Cornerstone fits the roof and installs the solar system.
More from the project
Get in touch
If your roof is due for attention and you are thinking about solar, tell us about your building or call 0800 011 9758. We will survey the roof, model your solar savings and talk you through the full warranty terms.
Power your business with solar.
Our renewables team designs, installs and maintains commercial solar, storage and EV charging across the North West and the UK.