On this boarded-reveal windows project in Preston, perimeter sealing is the first installation control and we form a continuous weather-resistant seal around the external frame perimeter, with perimeter sealing kept as the lead check for this boarded-reveal windows scope. Kaizen Windows & Doors links internal making good to frame setback, board thickness, corner beads, sill finish and seal line, making sure we repair or finish internal reveals, sill zones and decoration interfaces around the new frame, with perimeter sealing kept as the lead check for this boarded-reveal windows scope. We also review frame dimensions before making good and confirm manufacturing dimensions against the surveyed opening before the replacement frame is ordered, with perimeter sealing kept as the lead check for this boarded-reveal windows scope. Finally, head interface is checked so we can coordinate the frame head with the retained lintel, cavity closure and internal reveal, helping deliver internal boards finished neatly into the new frame position, with perimeter sealing kept as the lead check for this boarded-reveal windows scope.