I have got some maintenance issues. Do I need to resolve them or will the system deal with them?

In order to not hinder the efficacy of the system the property has to be kept in a dry and waterproof condition and adequately maintained. The system has not been designed to deal with maintenance problems such as broken tiles, damaged pointing, leaking gutters etc. or to stop ingress of water. Such issues should be rectified to enable the system to work effectively and at its maximum potential.