Double glazing in St Leonards-on-Sea

Your local double glazing firm

We’re Southern Window Systems, a family-run company based in Hastings and St Leonards and trading since 1993. St Leonards-on-Sea is right next door to our showroom, so a home visit, a quick question or a repair later on is never a long trip for us.

Much of our work comes from repeat customers and recommendations. We give you a free home visit, a free survey and a no-obligation quote, with no pressure to decide on the spot.

Windows for period and modern homes

St Leonards has a lot of Victorian and Edwardian houses, from terraces to larger seafront homes, alongside flats and newer properties. Many still have bay windows, tall openings or sliding sashes, and it pays to choose replacements that keep that character.

• Vertical sliding sash windows keep the traditional look, with modern seals and locks.
• Sash horn windows look like a sliding sash but open like a casement.
• Casement windows suit almost any home and are easy to live with.
• Aluminium windows give slim frames and more glass for modern homes.

Frames come in white, colours and woodgrain finishes. If your home is listed or in a conservation area, check with Hastings Borough Council before you change your windows or front door. We can help you with planning and building work questions.

Built to last by the sea

Our uPVC windows and doors use Liniar’s 6-chambered profile, engineered in the UK and supplied through the Double Glazing Network. The chambers trap pockets of air to keep heat in, and the integrated reinforcement keeps the frames strong. All the uPVC windows we install are A-rated for energy efficiency.

The profiles are lead-free and recyclable, and they never need painting: an occasional wipe with warm soapy water is all they need. Liniar backs them with a 10-year product guarantee against warping, cracking and discolouration.

Secure from the start

Locks and hinges sit inside the frame, out of sight and out of reach. We’re Yale approved installers, so every window and door has high-security Yale locks as standard, with a 10-year Yale guarantee. Our doors are Secured by Design and PAS 24 tested.

Doors, conservatories and repairs

As well as windows, we fit composite front doors, uPVC doors, French doors and bi-fold doors, and design conservatories to suit your garden. If something already fitted needs attention, see our double glazing repairs.

We’re FENSA registered, so your new windows are registered with FENSA and you get a certificate showing they meet Building Regulations. Read more about FENSA certificates and window and door security.