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Process & What to Expect · How It Works

How Old Windows Are Removed & Replaced

Replacing old windows raises a fair question: what happens to the opening when the old one comes out? Here's the process.

How it works

Removing an old window and fitting a new one is routine, careful work. The aim is to take out the old unit cleanly, prepare the opening, and seat the new made-to-measure unit so it fits and seals properly.

The steps

1
The old window (steel, wood, or aluminium) is detached and removed
2
The opening is cleaned up and checked
3
The new uPVC unit, made to that opening, is positioned
4
It's fixed true, level, and square
5
Gaps are sealed against weather and dust
6
Operation is tested and edges finished

What this means for you

Because the new unit is made to the measured opening, it seats properly without major masonry work in most cases — the replacement is cleaner and quicker than people often expect.

Questions

Frequently asked

How are old windows removed and replaced?

The old unit is detached and removed, the opening cleaned and checked, then the new made-to-measure uPVC unit is seated true, fixed, sealed, and tested.

Does replacing windows need major masonry work?

In most cases no — because the new unit is made to the measured opening, it seats properly without major masonry.

Is window replacement messy?

There's some dust during removal, but it's brief and the area is cleaned afterward.

From our range

What we make

uPVC Sliding Windows

Multi-track windows that need no swing space.

uPVC Casement Windows

Side-hung sashes for full airflow and the tightest seal.

uPVC Performance Systems

Double-glazed acoustic and thermal windows.

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Related guides covering this topic from other angles — different products, applications, or contexts.

Talk to the maker, not a middleman

When you're ready to talk to a maker rather than read about it, we'll measure your openings on site, advise honestly, and quote — factory-direct from our Pannimadai works in Coimbatore.