Modern PVC-U casement windows on a British home

Window system

aluplast

Mainstream, with bonded-glazing and slim-sightline options in the wider portfolio.

Overview

About aluplast

aluplast

aluplast tends to reach homeowners through the fabricator rather than through consumer advertising. That does not make it a lesser system — it simply means fewer people recognise the name.

If it appears on a quotation, the useful questions are the same as for any system: which range, what appearance, what glass and hardware.

Ownership: German PVC-U systems company supplying UK fabricators.

Systems / Ranges

Ranges within this system

Casement ranges

Standard replacement window ranges available through UK fabricators.

Appearance

External and internal appearance

Standard casement external appearance in the UK ranges most commonly fabricated; some European ranges offer slimmer sightlines and bonded glazing, but UK availability varies by fabricator.

Window / door types

Products available in this system

  • Casement windows

Colour options

Colour and finish

White as standard; foiled and painted options depend on the individual fabricator's offer.

Glazing capability

What it can glaze

Designed for standard double- and triple-glazed sealed units; specifics depend on which range your fabricator offers.

Thermal performance

Thermal performance

We do not have a verified UK whole-window U-value to quote for aluplast ranges; ask your installer for the figure that applies to the specific range and glass they have quoted.

Security

Security

Multi-point locking is standard on the ranges typically fabricated in the UK. Confirm any specific security standard on the installer's own paperwork.

Best suited to

Typical applications

  • Cost-aware replacement projects
  • Installers with an established aluplast fabricator relationship

Things to consider

Strengths and things to consider

Strengths

  • Established European systems company with UK fabrication support
  • Often competitively priced because it carries less consumer brand premium

Things to consider

  • Lower consumer recognition, which can make comparison feel harder
  • Range availability depends heavily on which fabricator your installer uses

Before you sign

Questions to ask an installer

  • 01Which aluplast range is quoted, and who fabricates it?
  • 02Is a flush or slim-sightline option available through this supplier?

The Glazora view

Do not dismiss a system because you have not heard of it. Judge the specification in front of you, not the amount the brand spends on advertising.

See how aluplast compares directly against another system, or get a quotation based on your own property.

Source / last verified

Where this information comes from

Source: Manufacturer published system literature and trade/fabricator-facing brochures in general circulation.

Last verified: Structure reviewed February 2025 — figures below are qualitative pending direct manufacturer confirmation.

Still needs verification against manufacturer literature:

  • Which specific ranges are available through UK fabricators
  • Frame depth and sightline figures
  • Any specific U-value