Polytrol - Colour restorer for dull or faded surfaces | Owatrol Direct
. boat gelcoats, tarnished metals, faded stone, tiles, paint, plastics and fibreglass (GRP). . Reviving the colour of faded garage doors. Restrictions. DO NOT use Polytrol on white surfaces, it will not work as Polytrol is .. How to revive a composite front door · How to clean untreated wood cladding and restore its colour.