We recommend that all uPVC, GRP, ABS or aluminium windows, doors and roof frames are cleaned with mild, soapy water after the initial installation, then every three months to remove grime and atmospheric deposits. 

In coastal or industrial areas this should be carried out every month. 

Stubborn stains on white uPVC can be cleaned with a non-abrasive uPVC cream cleaner.

Power washers, especially on conservatory roofs should never be used and care always taken not to disturb sealants and gaskets.