Allan Brothers products are treated with preservative after all machining. This is applied by means of a double vacuum process in accordance with BS5589:1989 (or BS8417:2003) and NHBC recommendations. Such treatment enables us to offer a 30 year warranty against rot or fungal decay. The coatings used as standard are water based in accordance with the company’s environmental policy.

Our extended  coatings warranty may be available on System 2000+ windows that are fully finished in our factory. Please ask for further details.