Window performance on this dual-colour windows installation in Albrighton depends on more than the frame profile. We start with reveal dimensions and check internal and external reveal depths so trims, plaster and handle clearances can be coordinated, with reveal dimensions kept as the lead check for this dual-colour windows scope. perimeter sealing is then coordinated through internal finish, external finish, trims, sealant colours and adjoining decoration, so we form a continuous weather-resistant seal around the external frame perimeter, with reveal dimensions kept as the lead check for this dual-colour windows scope. Before final finishing, we review trims and coordinate internal or external trims with reveals, frame position and adjoining finishes, with reveal dimensions kept as the lead check for this dual-colour windows scope. We finish with frame dimensions and confirm manufacturing dimensions against the surveyed opening before the replacement frame is ordered, supporting frame finishes coordinated separately to the interior and exterior appearance, with reveal dimensions kept as the lead check for this dual-colour windows scope.