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Material comparison

Flush windows in uPVC, timber, aluminium and alu-clad - compared

The outside line can look similar in a photograph. Ownership, maintenance, interior finish and whole-house cost can be very different - compare material families before you pick a brand.

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One table

Start with what actually changes

Whole-house figures belong on an itemised written quote after photos and rough sizes - not generic tiers.

MaterialMaintenanceOften best for
uPVC flushLow routine upkeep; clean and inspectValue-led replacement and broad system choice
TimberFactory finish with stated re-coating intervalsAuthentic material, restoration and timber interiors
AluminiumPowder coat; clean and inspectSlim frames, large panes and modern elevations
Alu-clad timberTimber inside; aluminium weather face outsideTimber in the room with less external redecoration

A sensible shortlist

Tell us what cannot be compromised

If maintenance leads, start with uPVC or aluminium. If the inside must be real timber, compare timber with alu-clad. If planning controls the elevation, settle that before the brand.

This page compares material families. Final decisions use a named system, verified technical sheet and property-specific survey.

Flush casement windows

Material routes

Where to go next

Material comparison FAQs

Questions

Before you shortlist a material family.

Flush material FAQs.

01Which material is cheapest?

uPVC flush is usually the lowest starting point on a whole-house schedule. Opening count, glass and access change the order - we quote each route honestly.

02Can all four look flush outside?

Yes, depending on the named system. Frame depth, joints and visible detailing still differ - compare samples, not renders alone.

03Which works in a conservation area?

There is no automatic answer. Planning requirements and visible elevation detail come first.

04Can I mix materials on one project?

Yes, but colour, sightlines and interfaces need coordinating rather than assuming they match.

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