Complete Range of Doors from Window Warehouse

Our dedicated door factory in Portsmouth manufacturers a bigger range of doors so you can give your customer more choice.

High security multipoint locking is standard and our doors are tested to PAS 24. We’re specialist in wide span bifold and sliding doors which are assembled and tested in our dedicated door jig – so its delivered to you right first time, ready for fitting.

Aluminium bifold doors from window warehouse, Portsmouth

Aluminium Bi-fold Doors

Our hugely popular aluminium bi-fold doors offer your customers more options with a range of opening configurations and a big choice of RAL colour finishes including dual colour.

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Aluminium Sliding Doors

Aluminium sliding doors give your customers an uninterrupted view out when the doors are closed. Lift & slide operation makes opening and closing even the largest doors almost effortless.

Suited to Bifold Doors

Imagine Bi-folding Doors

Imagine Bifolding Doors from VEKA Halo are versatile and stylish. The flush sash design combines smooth operation with high security locking. There’s also a wide range of colour options for your customers to choose from.

Palladio door

Palladio Monocoque Entrance Doors

Since Window Warehouse launched the unique Palladio Composite Door in the UK it’s become the entrance door homeowners choose – Palladio offers different styles, exclusive decorative glass and the best performance.

Sliding Patio Doors from Window Warehouse Portsmouth

Sliding Patio Doors

We manufacture Halo PVCu inline sliding patio doors in both fully sculptured or chamfered profile energy efficient frames. Attractive, easy to use, and highly durable, our sliding patio doors feature stainless steel tracking and fully reinforced frames.

French Doors from Window Warehouse, Portsmouth

French Doors

Made from Halo fully reinforced PVCu frames, you can offer customers our high security French Doors in a choice of FlushSash, fully sculptured or chamfered frames. All fully suited to our windows in a wide range of colour options.

Residential Doors from Window Warehouse

Residential Doors

Whatever style, glass or panel design your customers choose, every Halo PVCu Residential Door we make comes with multi-point locking and Guardian hinge protection as standard.

Individually inspected doors from window warehouse, Portsmouth

We assemble every bifold door and wide span sliding door we make in our purpose built test jig

We carry out a rigorous pre-delivery checking procedure, so when we deliver your door you know it’s ready for fitting and works fine.

All Window Warehouse doors are fitted with high security locking as standard. Our PVCu door range feature greenteQ hardware guaranteed for 10 years and we fit the best Guardian Hinge Protection System. Every door supplied for new build projects are Document Q Building Regulation compliant.

Like the look of our range of doors?

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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 BS6375 and PAS 24, 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 9001:2008 Quality Assurance and CENSolutions CMS Mark (CMS 6023W): Factory Production Control System compliance to EN 14351-1:2006.
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.