Sealtite Group Ltd - Home of Sealtite Windows & Qi Glass

Architectural Glazing Specialists since 1986


From tender phase through to construction phase Sealtite's Technical Team will help you to deliver your project successfully, using the right quality products cost effectively.


Sealtite was born to manufacture! With 30 years' experience of making windows, doors and curtain walling we know how to produce quality products.


Our installers, supervisors and project managers are specifically trained to ensure that our end product reflects our commitment to quality and safety.

Sealtite Products

Fenestration experts

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Established in 1986, Sealtite Group is a manufacturer, supplier and installer of windows, doors, conservatories, roof lights, heavy duty doors, curtain walling & window walling, in aluminium and PVC, for new builds and refurbishments. It also offers structural glazing and bespoke glass work.

Sealtite Group introduce stunning Glass products throughout London and the South East of England using only the best quality products available as well as offering Sapa Building Systems, Metal Technology & Jack Aluminium Doors.

Sealtite Group consists of two businesses:

Sealtite Windows - Windows, doors, heavy duty doors, curtain walling & window walling

Qi Glass - For all your structural glazing from canopies and balustrades to bespoke glass work available to commercial/ architectural projects.

Awarded its ISO 9001:2000 rating in 1994, Sealtite has maintained this status over the years as a testament to its commitment to the industry. Sealtite Group is fully CE compliant and is a member of Constructionline and CHAS.

We work in; Addington, Addiscombe, Anerley, Balham, Banstead, Barnes, Battersea, Bayswater, Beckenham, Beddington, Belgravia, Bermondsey, Bexley, Bickley, Biggin Hill, Blackheath, Brixton, Brockley, Bromley, Camberwell, Camden, Carshalton, Caterham, Catford, Charlton, Cheam, Chelsea, Chislehurst, Clapham, Colliers Wood, Coulsdon, Covent Garden, Crofton Park, Croydon, Crystal Palace, Dulwich, Ealing, Earl's Court, Earlsfield, Eden Park, Elephant and Castle, Elmers End, Eltham, Farnborough, Forest Hill, Fulham, Gipsy Hill, Greenwich, Grove Park, Hackney, Hammersmith, Hampton, Hamsey Green, Haringey, Hayes, Herne Hill, Holborn, Holland Park, Islington, Kenley, Kennington, Kensington, Kent, Keston, Kew, Kingston upon Thames, Kingswood, Knightsbridge, Ladywell, Lambeth, Lee Green, Lewisham, Limpsfield, London Bridge, Maida Vale, Marylebone, Mayfair, Merton, Mitcham, Morden, Mortlake, Mottingham, New Addington, New Cross, New Malden, Newham, Norbiton, Norbury, Norwood, Notting Hill, Nunhead, Orpington, Oxted, Paddington, Parsons Green, Peckham, Penge, Petts Wood, Pimlico, Pollards Hill, Purley, Putney, Raynes Park, Richmond, Roehampton, Rotherhithe, Sanderstead, SE London, Selhurst, Selsdon, Sheen, Shepherd's Bush, Shirley, Shortlands, Southfields, Southwark, St John's Wood, Stockwell, Streatham, Surbiton, Surrey Quays, Surrey, Sussex, Sutton, SW London, Sydenham, Teddington, Thornton Heath, Tooting, Tower Hamlets, Tulse Hill, Twickenham, Vauxhall, Waddon, Wallington, Walworth, Wandsworth, Warlingham, Waterloo, West End, West Wickham, Westcombe Park, Westminster, Whyteleafe, Wimbledon, Woldingham, Woodside, Woolwich, Worcester Park and many more, contact us to discuss your next project.