Guarantees

There is an issue of guarantee and warranty. Green roof manufacturers provide a guarantee for the waterproofing but also provide a guarantee in terms of the green roof, specifically for plant survivability. Roofs designed for biodiversity will, generally, not be given a guarantee in regard the green roof system. Often this is worded in such a way as to suggest the roof will not be guaranteed, implying that neither the waterproofing nor the green roof will be guaranteed. In fact it is the green roof, i.e. plant survivability that is not being given a guarantee. However the wording can incline a developer or architect to be persuaded to purchase the whole system. It is important to establish what is guaranteed and what is not.

What is guaranteed?