ALPES aluminum windows and doors UK

ALPES builds its system windows and doors mostly for projects that sit in hot, coastal, villa markets — Saudi Arabia, Dubai, the wider Middle East, and Australia. A project in the United Kingdom is a different climate zone, a different set of building regulations, and a different set of buyer expectations. The product does not change. The priority order of the specification must. This guide re-sorts the ALPES catalogue for a UK brief so the conversation starts in the right place.

The UK is a heating-dominated climate — and that re-sorts the spec

In the Gulf, the fight is solar gain and salt. In the United Kingdom, the dominant load is keeping heat in through a long, mild, wet heating season, resisting wind-driven rain from shifting directions, and stopping condensation forming on the inside faces of the frame. Overheating is now a genuine factor on large south- and west-facing glazing under Part O, but it is a second-order problem next to the whole-window U-value. So the first move for a UK brief is to stop leading with the things that win in Dubai and start leading with the things that win in Leeds.

What the UK climate attacks, and what your specification must say

When ALPES is not the right answer — said plainly

Honesty is cheaper than a rejected submittal. These are the cases where the catalogue alone will not close the job:

Glass before frame — and solar control second

For a UK heating-dominated home, the insulating glass unit does more of the thermal work than the frame. Specify a low-emissivity coat, an inert-gas-filled cavity — ALPES publishes 24A and 27A cavities — and a warm-edge spacer. Solar control matters mainly on large south- and west-facing elevations where Part O overheating applies; there, an external shading strategy is often cheaper than upgrading the glass. State the U-value you require for the whole window, not for the glass alone, because the frame and the spacer are part of that number.

The numbers a UK submittal will ask for — and who actually holds them

Exposure zones across the UK

Who signs what — the compliance honesty section

The UK frameworks are real and worth naming: Approved Document L for energy, Document Q with PAS 24 for security on new dwellings in England, UKCA or CE marking (CE is accepted in Great Britain indefinitely, while Northern Ireland follows the EU CE route), BS 6375 for product performance, the BFRC Window Energy Rating scheme, Part O for overheating, Part F for ventilation and trickle vents, Part M for access, and Part B for fire egress. ALPES supplies the materials, section drawings, test reports and a declaration. It is not the certificate holder for your building. A certificate attaches to a tested configuration and to an applicant — it does not travel with the series name. Your installer or main contractor is usually the first responder when something needs to be answered on site.

The ALPES products that fit a UK brief

For UK homes the inward-opening tilt and turn windows are the workhorse for weather and security, and the side-press sliding window is built by an aluminium sliding window manufacturer that leads with a thermal break rather than a track. The sliding doors that suit UK patios and large openings come from china sliding door manufacturers who run the same system logic.

Honest note: the sliding families have no published whole-unit K value, so treat the Uw as project-specific. The K values 1.3, 1.6 and 1.7 are system values for those named series, not for the sliding families, and not NFRC figures.

Ten questions to put in your RFQ — with red-flag answers

Frequently asked questions

Do ALPES windows meet UK building regulations?

The products use the same physics the regulations care about — thermal break, low-E glass, multipoint locking. But meeting a regulation is a project-level task: the factory supplies evidence and a declaration; your UK installer or specifier confirms compliance for the actual configuration.

Is CE or UKCA marking needed for Great Britain?

CE marking is accepted in Great Britain indefinitely alongside UKCA. Northern Ireland follows the EU CE route. The factory can draw the relevant declaration; importer details must appear on the product.

Will a passive-grade frame solve condensation?

A low-K frame with a warm-edge spacer keeps the inner glass edge warmer, which removes most condensation risk. It does not ｒｅｐｌａｃｅ ventilation; moisture from cooking and bathing still needs a path out.

Are sliding windows as warm as casements in the UK?

A side-press sliding window closes the gap with compression sealing, but a hinged casement still gives the tightest perimeter seal. ALPES does not publish a whole-unit K for the sliding families, so ask for your project Uw rather than comparing brochure numbers.

Can I get a PAS 24 certificate?

Only for the exact tested configuration. If your size, glass and hardware differ, the certificate does not cover it; plan testing or rely on factory evidence plus your installer's UK certification.

What about Scotland and Northern Ireland?

Scotland uses its own Building Standards (energy and security sections), and Northern Ireland follows the EU CE route with its own technical booklets. The product logic is the same; the paperwork route differs, so name the jurisdiction in your enquiry.

Short version

• UK is heating-dominated: lead with U-value, warm-edge glass and drainage, not solar control.
• State whole-window Uw, not glass Ug; sliding families have no published K.
• Document Q and PAS 24 apply to new dwellings in England; certificates are configuration-specific.
• CE is accepted in Great Britain indefinitely; the factory draws the declaration, your importer is named on the product.
• ALPES supplies evidence and drawings; it is not the certificate holder for your building.
• Put the ten RFQ questions in writing before you order.