Heritage Windows

Heritage Windows

Project Description

Heritage Style Casement Windows

Window Warehouse manufactures heritage windows including PVCu Georgian bar windows and heritage sash horn windows with style and energy efficiency at their core.

Clever design features like run through sash horns and Georgian bars help to maintain a period property-feel with the high security and efficiency of modern PVCu.

Georgian Bar and Heritage Sash Horn Windows

Our Georgian bar heritage windows are made using Halo 70mm frames in a range of heritage colours. By combining this energy efficient PVCu profile with the astragal bar detailing, windows remain sympathetic to the traditional Georgian heritage window style which is popular on both traditional and contemporary properties.

For extra traditional style, homeowners can choose to have sash horn caps added to the opening sash of their casement or sliding sash windows the rounded caps help to soften the look of the window, maintaining traditional aesthetics.

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Energy Efficiency

Haven Georgian bar and sash horn heritage windows are available up to an A Window Energy Rating, as certified by the BFRC (the British Fenestration Rating Council).

At Window Warehouse, we use Halo System 10 and Rustique profiles for chamfered and sculptured profiles which feature a 4 chambered sash for improved thermal efficiency.

The multiple chambers prevent cold air from outside conducting through the PVCu to the inside of the house and vice versa, improving energy efficiency and reducing cold spots to help save energy and reduce heating bills.

Energy Efficiency

PVCu hardware options

We offer a range of greenteQ hardware options for our heritage sash and Georgian bar heritage windows which means we can offer a ten year guarantee on the full window frame – including the hardware. Homeowners can choose from a variety of finishes to suite with their homes , from the standard colour range: White, Brown, Black, PVD Gold, Polished Chrome, Satin Chrome and Smokey Chrome to the stainless steel finishes: PVD Gold, Polished Chrome and Brushed Stainless.

All window hardware can be fully suited with door hardware for a perfect match throughout the home.


As with our full range of Halo windows, our Georgian bar windows and sash horn heritage windows have high security as standard. Our windows have twin camm, multipoint shootbolt locking, hinge bolts and claw hooks at each locking point.

Security options from Window Warehouse

Available in a great selection of colours

For added authenticity for traditional homes, our Georgian bar windows come in a variety of colour choices including: Cream, Whitewood, Irish Oak, Chartwell Green, Anthracite Grey and Black Brown.

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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.