Sash Window Draught-Proofing Systems from The Classical Sash Window Company serving Surrey, Hampshire and West Sussex.

Benefits of our Draught-Proofing Systems

  • Extremely cost effective
  • Eliminates up to 98% of draughts
  • Shakes and rattles are eradicated
  • Allows smooth, easy-sliding sashes
  • Outside noise levels reduced by up to 40%
  • Reduced heating bills and lower carbon footprint

For more information, get in touch with us.

the most rewarding investment we have made

“We should have got Classical Sash Windows to service and Draught- proof our sash windows as soon as we moved in. So pleased with the work done, no draughts and no rattles. The house is so much warmer and we have turned our heating down. The team did a great job; clean and efficient and good value – probably the most rewarding investment we have made on our house so far.”

Mrs B
Hartley Wintney in Hampshire.

Draught-proofing for sash windows and doors in Surrey, Hampshire and West Sussex.

Over the course of time, old sash windows rattle and become draughty, pushing your heating bills through the roof and the heat out of your windows. Our eco-friendly sash window draught proofing systems fit discreetly into your sash windows without compromising the original charm of your beautiful (or soon-to-be beautiful) sash windows. However, they do eliminate the common problems associated with old sash windows, such as rattles and draughts. At the same time, we overhaul the window and replace old cords and fittings. We are an independent company, so we can offer a wide range of insulating products from several manufacturers, to suit every situation. We are extremely proud of our systems and our customers are amazed at the difference after they have been installed. Take a look at our gallery to see some of our completed work.


01372 451174


02392 366324


07904 160528


What’s involved in fitting our
sash window draught-proofing systems?…

The top and bottom sashes are carefully removed from the frame and planed as necessary so that they are correctly aligned and not too tight in the frame. Loose joints are fixed and old locks and fittings removed. Holes and damage are filled with two-part epoxy resin and any loose paint and debris is removed from the frame.Loose putties on the sashes are removed and replaced. Heavy duty, long lasting sash cords are fitted once the sashes are correctly balanced and calibrated and the pulleys are serviced. The sash’s top and bottom meeting rails have a slot routed out to enable the fitting of a PVC weather-strip, ensuring maximum draught proofing on the horizontal rails of the sashes.

Two new timber parting and four staff beads, with a T-carrier inserted, holds an insulating brush pile. The brush pile forms a barrier offering protection from the outside elements. The sashes hold firmly, but not too tight, while rattles and draughts are eliminated and the sashes can be opened and closed with ease.

New brass, antique brass, chrome, brushed chrome or satin nickel sash lifts, fasteners and security stops are fitted as standard. Where necessary, we can replace cracked glass, rotten sills and frame linings and sashes. If beyond repair we can replace with new matching ones.

Where we operate

We provide sash window and casement windows DRAUGHT-PROOFINGservices to customers with Sash Windows in Surrey, Hampshire and most parts of West Sussex.

For all Sash window repairs, improvements and new installations for Portsmouth, Winchester, Midhurst, Farnham, Alton, Guildford, Petersfield, Esher, Alton, Basingstoke, Midhurst, Fleet, Odiham, Surbiton, Kingston, Chichester, East Mosely, Dorking, Weybridge, Epsom, Godalming and Woking, Reigate and Redhill areas are all welcome, so please call us for a free, no obligation quotation and advice.