Window performance on this ventilated window replacement installation in Kirkham depends on more than the frame profile. We start with thermal junctions and coordinate the frame perimeter with insulated reveals or cavity details to limit avoidable cold bridging, with thermal junctions kept as the lead check for this ventilated window replacement scope. gaskets is then coordinated through vent positions, frame head, room ventilation strategy, curtains or blinds and internal finish, so we check glazing and sash seals for continuous seating before final handover, with thermal junctions kept as the lead check for this ventilated window replacement scope. Before final finishing, we review trims and coordinate internal or external trims with reveals, frame position and adjoining finishes, with thermal junctions kept as the lead check for this ventilated window replacement scope. We finish with frame position and set the new frame at a position that works with the reveals, sill and external finish, supporting window ventilation incorporated without treating it as an afterthought to the frame installation, with thermal junctions kept as the lead check for this ventilated window replacement scope.