Why Choose Us as Your Window & Door Manufacturer and Supplier

Window Warehouse is your local window and door manufacturers within the Portsmouth and South East area. We offer a range of products for home improvement projects, from uPVC and aluminium windows to Composite and uPVC doors. 

Get in touch with our friendly team of experts for more information and a quote. Whether you are a homeowner looking for products and to find a local installer, or a tradesperson looking for a new supplier and manufacturer, Window Warehouse is here to help.

Bathroom with black aluminium windows

Window Warehouse for Tradespeople

Window Warehouse is a manufacturer and supplier of windows and doors throughout the South Coast, with 37 years of manufacturing experience. We offer an extensive range of products for residential and commercial building improvement projects, which we supply directly to you for installation into your customer’s homes. 

Window Warehouse for Homeowners

Window Warehouse is a double glazing supplier for installers near you, giving you access to the vast range of home improvement products we offer through your chosen installer. If you are struggling to find a reputable installer near you, we have a handy ‘Find an Installer’ tool for you to try, which gives you access to installers in your area who can help with your home improvement projects.

Find an Installer Tool for Homeowners

Our Find an Installer tool gives you access to our network of installers across the South Coast, who can then install our double glazing products into your property. The use of the Find an Installer tool allows you to enter your postcode, whereby you will then be directed to enter your details. This will then generate a list of approved installers in your local area for you to choose from.

This tool is great for homeowners who are apprehensive about choosing an installer, as our network of installers are all trusted and approved by Window Warehouse, so you can rest assured that your home improvement projects are in trustworthy hands.

Products We Offer

Window Warehouse is a window and door manufacturer that offers an extensive range of products for your own or for your customer’s home improvement projects. 


We offer a range of windows ideally suited to your or your customers’ properties. 

House with casement windows and small front garden

Casement Windows

Casement windows are a perfect option for busy households, as they are low maintenance. You can ensure your casement windows stay looking brand new for years to come with a simple wipe over from a damp cloth and some soapy water. Our casement windows also come with advanced double glazing as standard, so you can be sure that the windows you install/have installed into your home will improve the property’s energy and thermal efficiency.

Flush Sash Windows

Flush sash windows offer traditional and classic appeal combined with modern security and functionality. Flush sash windows installed by Window Warehouse approved installers offer excellent security, with a multipoint locking system around the frame for the best protection against unwanted visitors.

French Windows

French windows are a beautiful addition to any home. French windows let in an abundance of natural light and allow for good ventilation, perfect for making your or your customer’s homes as bright and airy as possible.

Fully Reversible Windows

Fully reversible windows are great for practicality and accessibility. Fully reversible windows are perfect for accessible cleaning, and can also improve the energy efficiency of your home due to being made from PVCu, so these window frames will not be affected by adverse weather or huge amounts of use.

Bow and Bay Windows

Bow and bay windows expand the space within the property, as they protrude from the home, creating a small extension space, perfect for storage or a window seat. Our bow and bay windows can also be fully customised with your choice of hardware and colour.

Tilt and Turn Windows

Tilt and turn windows add an air of modern class and practicality when installed into a home. They are thermally efficient, and easy to maintain due to their helpful tilt and turn functionality.


We also offer a variety of doors for your properties across the South Coast.

Pink DoorCo composite door supplied by Window Warehouse

Palladio Composite Doors

Palladio composite doors are made from high strength GRP monocoque, providing excellent strength and durability. They also come in a range of colours and design options, ensuring the composite door you install/have installed is specifically tailored to your taste.

DoorCo Composite Doors

DoorCo composite doors are a beautiful statement for your or your customer’s home. Creating a bespoke entranceway gives your home a wow factor it may not have previously had. We also have a DoorCo visual designer tool that you can use to bring your vision to life.

uPVC Door Range

Here at Window Warehouse, we offer a range of uPVC doors, from uPVC French doors, offering U-values as low as 1.1 W/m2K, to uPVC patio doors, which boast an easy to operate system and open your home up to the outdoors. We also offer uPVC Stable doors, perfect for family homes, where you can open the top for added ventilation and airflow, but keep the bottom closed to ensure your children are kept safe.


As your local window and door suppliers, we also offer a range of aluminium windows and doors for your home. Aluminium is an excellent alternative to uPVC or timber, as it provides a solid frame that will not crack or break, twist or warp in adverse weather conditions, and is great for energy and thermal efficiency as it will not split and cause draughts and damp within the property.

Are you searching for ‘double glazing manufacturers near me’ but don’t know where to start?

Window Warehouse is your local window and door supplier for all of your home improvement project needs. Get in touch with the team today at 023 9232 7744, or start your online quote now!

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