3 Week Delivery On Our Engineered Bi-Fold Doors
Bifold Doors - Choose From
Aluminium or Imagine PVCu
Exclusive designs, unique monocoque high strength structure & double seal protected - see the video here
Palladio - The Different
Composite Door
Expert advice and specification support for your project
Commercial Windows and Doors
Your partner for Halo PVCu windows and doors
30 Years Supplying The Trade

New Leka Solid Conservatory Roof - Lightweight & Easy to Install

Replacement Tile or Slate Finish Conservatory Roof

Please click here and simply log in to use our online quoting and ordering service.


PVCu Windows from Window Warehouse, Portsmouth

High security Halo PVCu Windows & Doors made from System 10 bevelled or Rustique sculptured frames in a big range of colours



Palladio is the different composite door – unique high security monocoque construction, exclusive styles you can’t get anywhere else and double seal protection


Aluminium bifold doors from Window Warehouse, Portsmouth

We test every Aluminium Bi-folding Door, Sliding Door and VEKA Imagine Bi-fold Door we make and deliver it to you right first time.


Commercial Windows

We are specialists in making aluminium or PVCu windows and doors for commercial projects. Talk to us for expert advice and specification support.

Manufacturer of windows, doors and conservatories to
  • trade
  • installers
  • industry

Window Warehouse...

Pioneering Service, Quality & Security

We’ve been manufacturing bespoke windows and doors direct to the trade for 30 years. In that time we’ve become known for supporting customers with exceptional levels of service and support. We think you can’t beat personal service when it comes to helping you get the job done.

Window Warehouse manufactures a huge range of PVCu and aluminium windows & doors, composite doors and bi-fold and sliding patio doors. Whether it’s for residential or commercial properties, we’re always looking to new products to help our customers increase sales.

All our windows and doors are fitted with high security locking as standard. And we work hard to ensure we provide the highest standards of quality…but don’t take our word for it – take a look at what our customers say about us below.

30 Years Supporting the Trade

Don't just take our word for it...

Window Warehouse is an absolute breath of fresh air and we will now be placing all of our window and door business with them.

Martyn RainerThermaspec UK Ltd

We have been loyal to Window Warehouse Ltd. for over 20 years thanks to consistently raising the quality of their products and services to remain as forerunners in the trade manufacturing industry.

Stuart McLoughlinDesigner Windows


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.

Network VEKA

Since 1996 over 230,000 homeowners have chosen a Network VEKA member to installer their windows, doors or conservatory. Window Warehouse is a Network VEKA Approved Trade Fabricator so talk to us about joining this outstanding installer network.


Our team is on hand to give you all the support you need. Our experts can give you technical and installation advice and we offer 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 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.

Window Warehouse Blog

Easy Tiled Conservatory Roof Replacements with Leka

Tiled conservatory roof replacements are made easy for window installers on the South Coast with Leka. Leka is supplied ready-to-fit... read more

Fit a New Conservatory Roof in 2-3 Days

Supplied ready-to-fit by Window Warehouse, Leka, the genuinely lightweight tiled, solid conservatory roof system is the perfect replacement for... read more

Seven Reasons to Choose Windows from Window Warehouse

PVCu & Aluminium Windows for the Trade At Window Warehouse, we’ve been manufacturing the best selection of PVCu and aluminium... read more

Coloured Frames Delivered in 5-7 Days

Window Warehouse is offering 5-7 day delivery on the seven most popular Halo PVCu window and door colours to... read more