Welcome to the website of the Box Sash Draught Proofing Company, Greenwich
Part of the Meridian Box Sash Windows Group
Your First Choice for Box Sash Windows in Greenwich
The company has been trading for over 20 years and undertakes all aspects of new joinery and box sash window restoration and draught-proofing.
The Box Sash Draught Proofing Company is fully insured, Fensa registered, The Guild of Master Craftsmen, and Members of QA – insurance back guarantee.
The Box Sash Draught Proofing Company, London, operates as part of the Meridian Box Sash Windows group, which means you get all the benefits of working with an established, specialist company. Every project we undertake is backed by the same guarantees and quality workmanship standards that Meridian Box Sash Windows is known for. Whether you are restoring original sash windows or commissioning new traditional joinery, you can trust in our company’s decades of experience serving Greenwich homeowners.
Sash windows and traditional doors are the defining features of many period homes in Greenwich. It’s such a shame when homeowners replace these beautiful original windows with cheaper modern white plastic frames, especially when restoration can bring them back to their former glory.
One of the key advantages of sash windows is their natural ventilation system. By opening both the top and bottom sashes equally, warm air escapes from the top of the room while cool air enters below, providing efficient cooling during warm weather without relying on air conditioning.
If you are in Southeast London and looking to restore your period property’s original character, we specialise in sympathetic restoration of sash windows and traditional doors.
Traditional Wooden and Double-Glazed Sash Windows
Our traditional wooden windows and doors are hand-manufactured from high-quality hardwood or BC Pine (premium softwood). We can also work with a range of other hardwoods and softwoods to meet your specific requirements.
Standard Construction:
Most units are constructed from softwood with traditional single glazing, preserving the authentic look and feel of period properties.
Double Glazing Options:
While double-glazed sashes are available, we recommend careful consideration before retrofitting double-glazing to original sash windows. Many homeowners mistakenly replace single-glazed sashes with top-hung casements when adding double glazing, an approach that compromises the building’s period character. We can advise on the most sympathetic solution for your Southeast London property.
Normally, the time taken for sash window renovation or major repair is 2 to 4 windows per day, but then the time may vary depending on the extent of the repairs, with full restoration taking considerably longer.
All our frames are made in hardwood and spray-finished in our own joinery workshop.
100% Customer Satisfaction.
We cover Dartford, Sidcup, Bexleyheath, Southwark, Orpington, Croydon, Bromley, Sutton, Erith, Greenwich, Epson, Blackheath, Westcombe Park, Lee Green, Brockley, Hither Green, Ladywell, Forest Hill, Sydenham, Crystal Palace and Beckenham.









