Kaizen Windows & Doors plans extension uPVC windows in Rhyl around details that are harder to correct after finishing. The first control is trims, and we coordinate internal or external trims with reveals, frame position and adjoining finishes, with trims kept as the lead check for this extension windows scope. We then coordinate opening survey through prepared openings, lintels, cavity closures, sill levels and external finishes and check the existing opening, frame position and surrounding finishes before final dimensions are confirmed, with trims kept as the lead check for this extension windows scope. Cill Projection is checked before closure, while frame alignment is included in final handover. We set the cill projection and end details to suit the opening and surrounding finish and check the frame for line, level and square before glazing and final tightening, keeping the installation focused on window installation aligned with the wider extension build and finish sequence, with trims kept as the lead check for this extension windows scope.