For this coloured uPVC windows project in Broughton, opening checks, frame fitting and finishing are treated as one sequence. Reveal Dimensions leads the review, so we 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 coloured uPVC windows scope. We use perimeter sealing and trims around frame finish, trims, sealant colour, adjoining masonry or render and hardware, ensuring we form a continuous weather-resistant seal around the external frame perimeter and coordinate internal or external trims with reveals, frame position and adjoining finishes, with reveal dimensions kept as the lead check for this coloured uPVC windows scope. The last technical check is frame dimensions; we confirm manufacturing dimensions against the surveyed opening before the replacement frame is ordered, with reveal dimensions kept as the lead check for this coloured uPVC windows scope. This supports a coloured window finish coordinated with the surrounding external materials.