A few installation mistakes quietly ruin good windows. Here's what to avoid — and what good fitting looks like.
Most installation failures come from rushing — a window not quite level, gaps not fully sealed, fixings too few. Done to a standard, none of these happen; done carelessly, they show up as leaks and stiff operation within months.
Seating windows out of true, sealing gaps incompletely, under-fixing, not testing hardware, and forcing ill-fitting units. All come from rushing.
Use fitters who work to a standard — seating true, sealing fully, fixing correctly, and testing — rather than rushing the job.
Often within months, as leaks, drafts, or stiff operation — which is why careful fitting matters.
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