Window performance on this front-elevation replacement installation in Egremont depends on more than the frame profile. We start with sill level and coordinate the frame base with the internal sill or window board and the external weathering detail, with sill level kept as the lead check for this front-elevation replacement scope. drainage paths is then coordinated through opening sizes, frame alignment, sill levels, external finish and internal reveals, so we keep designed frame drainage routes clear through installation and external finishing, with sill level kept as the lead check for this front-elevation replacement scope. Before final finishing, we review locking points and align sash locking points and keeps so the window closes evenly around the frame, with sill level kept as the lead check for this front-elevation replacement scope. We finish with external making good and finish external reveals, render or masonry interfaces around the installed frame, supporting a more consistent front elevation with each frame aligned to the wider window package, with sill level kept as the lead check for this front-elevation replacement scope.