Aluminium Windows

Aluminium Windows

Project Description

Slimline Aluminium Windows

Every Window Warehouse slimline aluminium window is made with accuracy in our dedicated aluminium factory in Portsmouth and delivered on time to meet your delivery needs.

As an AluK fabricator, Window Warehouse offers expert advice for demanding commercial projects or domestic installations.

Window Warehouse

Our high specification aluminium window is available in any RAL powder coated finish and optional dual colour frames. It features a unique gasket design which makes the window very easy to glaze. The Casement and Tilt & Turn windows have slimmer frames to create narrow sightlines for a bigger glass area and feature internal beading for security.

  • Designed for faster installation
  • Visually Slim System for a maximum glazed area
  • Unique gaskets make glazing easy
  • Matching aluminium windows and entrance doors that are fully integrated
  • High thermal performance
  • Top and side hung and tilt & turn applications
  • Glazing options from 24mm to 45mm triple glazed units
  • Chambered or ovolo aesthetics
  • Sills, add-ons, curtain wall insert and coupler sections are available

Superb weather protection is provided with an innovative baffled drainage system to stop wind noise.

Looking for a quote or to place an order? Contact us today on 023 9232 7744.

Like the look of our Aluminium Windows?

Get in contact today for free, no obligation quote.

Energy Efficiency

Window Warehouse aluminium windows are more thermally efficient to achieve high energy ratings reducing your customers heating bills and achieving higher standards required by many commercial specifications. Choose CE Marked glazed aluminium windows and achieve higher thermal performance with our warm edge double glazed units. Our warm edge spacer can reduce window u-values by up to 0.2W/m²K and can also reduce the effects of noise pollution by up to 2dB.

Window Warehouse

Aluminium Window Security and Hardware


With a full range of locking systems and security-focused hardware, aluminium windows from Window Warehouse are protected with claw hooks at every locking point and multipoint shoot bolts.

Security options from Window Warehouse

Available in a great selection of colours

Aluminium window colour samples

There is a huge choice of over 400 colour options including gloss, matt, metallic, anodised and the stunning PWF wood finish. The Qualicoat surface finish is maintenance free and scratch resistant.

Window Warehouse
ALuk window systems window technical datasheet

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Download an order form here.


About Us

Malcolm Cake started Window Warehouse in 1986 and over 30 years later we are still serving some of our original customers. We are one of Halo’s longest standing trade fabricators and manufacture in Portsmouth.


We test our products to PAS 24 standards, meeting the latest Document Q Building Regulation requirements for new buildings.

Independent Network

Since 1996 over 230,000 homeowners have chosen a Network VEKA approved installer to fit their windows, doors or conservatory. Now developed into the Independent Network, Window Warehouse is an Approved Trade Fabricator so talk to us about our outstanding installer support.


Our team is on hand to give you all the support you need. Our experts can give you technical and installation advice and offer we professional marketing and business support with our exclusive Haven retail brand promoted across Hampshire and the South Coast.

Quality First

Our windows and doors are manufactured to ISO 9001 : 2015 Quality Assurance and CENSolutions CMS Mark (CMS 6023W): Factory Production Control System compliance to EN 14351-1:2006. All our products also hold the CE Marking certification.
Halo from Window Warehouse

Halo Installer Scheme

Powerful marketing support and exclusive sales leads in your area are two advantages of the free-to-join Halo Approved Installer Scheme. As one of the longest standing Halo Trade Fabricator partners Window Warehouse.