“Double glazed windows that are not draught
proofed will offer no more thermal protection
and insulation than single glazed sash
windows!
Sash window draught proofing London by
Mortice & Green sash window repairs
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Sash Window Draught Proofing London – Lower your heating bills and increase your comfort this winter
Are your sash windows behaving badly?
Do they rattle in the wind?
Do not put up with it for another winter, Call Mortice & Green Sash window repairs now on 020 7118 9191 We have been sash window draught proofing London for over twenty years!
Typically the draught proofing of your sash windows will always be included as part of your sash window restoration and or sash window refurbishment work. We believe that a sash window that has been refurbished but not draught proofed is a sash window that has not been refurbished at all!
Heat loss through windows and doors accounts for anywhere between 10% and 40% of total heat losses from all buildings. This is a very large problem that will affect your heating bills, but when you consider the cost implications of replacement sash windows it could take approximately 400 years to see a financial return of your investment.
This means that improving the thermal performance of your sash windows has to be given some thought. If you feel that replacement double glazed sash windows are expensive, (which they are) but you are still aiming at reducing your carbon emissions and heating costs then what are the other options and how do they compare?
It is fair to say that a draughty sash window is going to cause massive problems with home comfort and an increased heating bill.
Double glazed sash windows that are not draught proofed will offer no more thermal protection and insulation than single glazed sash windows!
By eliminating the draughts from your sash windows even if they are single glazed you will increase the performance of your original sash windows by up to 70% and the cost of sash window draught proofing is a fraction of the cost of replacement double glazed sash windows.
We offer a sash window draught proofing and overhaul service and can even retro fit replica double glazed sliding sash windows into your original box frame to further increase the insulation of your home.
Give us a call today for sash window draught Proofing London
020 7118 9191
Frequently Asked Questions
How does sash window draught proofing work?
Sash window draught proofing involves fitting a system of discrete brush pile seals and compression seals into the channels and meeting rails of your existing sash windows. The brush piles are integrated within the parting beads and staff beads that hold the sashes in place, creating a continuous seal around the perimeter of each sash that eliminates draughts without restricting the opening and closing operation of the window. The system is virtually invisible once installed and does not alter the appearance of the window.
How much does sash window draught proofing cost in London?
Sash window draught proofing typically costs from £200 to £400 per window depending on the size of the window, its current condition, and whether any preparatory work is required to the timber before the draught proofing system can be fitted. For properties with multiple windows requiring draught proofing, we offer competitive pricing for combined quotations. Mortice & Green provides free, no-obligation quotations – call 020 7118 9191 to arrange a survey.
Will draught proofing make a noticeable difference to heat retention in my London home?
Yes – sash windows are often the single largest source of heat loss in period London properties, and effective draught proofing can make a significant difference to comfort and heating bills. Original unmodified sash windows can lose as much heat through gaps as a small open fireplace. A properly installed draught proofing system eliminates the draughts at the primary points of air infiltration, around the sashes, at the meeting rail, and at the top and bottom of the frame, producing a noticeably warmer and quieter room.
Can sash windows be draught proofed without affecting how they open and close?
Yes. The brush pile draught proofing system Mortice & Green installs is specifically designed to maintain the full sliding operation of the sash windows. Both sashes should continue to open, close, and be held in any position as before. In many cases, the draught proofing installation also includes minor adjustments to the sash operation, easing stiff sashes and ensuring the weight-to-sash balance is correct, so windows often operate more smoothly after draught proofing than before.
Is sash window draught proofing permitted in conservation areas in London?
Yes. Draught proofing is carried out entirely within the existing window frame without altering the external appearance of the window in any way. It is therefore acceptable in virtually all conservation areas and on listed buildings across London, where external modifications to windows are often restricted. If you have any specific concerns about your property, Mortice & Green will advise at the survey stage.
How long does sash window draught proofing take to install?
A single sash window typically takes three to four hours to draught proof. For a full bay window of three sashes, the work takes approximately a day. We minimise disruption throughout and leave the property clean on completion. We carry all required materials and tools to complete the work in a single visit in most cases.