Greenock sits on the Firth of Clyde where damp air and long wet spells are part of ordinary winter life. Condensation on glass is often a mix of how the room is heated and ventilated, how well seals still work, and whether cold surfaces invite moisture to settle.
A survey looks at where moisture appears — room corners, bathroom windows, bedrooms with curtains tight to the sill — and how air moves through the house. Failed sealed units show mist between panes; everyday condensation sits on the room side. Sorting one from the other matters before anyone recommends new glass.
We do not invent climate statistics or building-warrant rules on this page. A surveyor confirms what your property needs. For replacement options after that conversation, see double glazing in Greenock and UPVC windows.