Please take a few moments to read our Frequently Asked Questions which may benefit your enquiry about our specialist draughtsealing and window repair services, available across London.

What are the benefits of the draughtsealing perimeter system?

  • Virtually eliminates draughts
  • Eliminates rattles
  • Reduces outside noise levels
  • Increases energy efficiency which in turn reduces heating bills
  • Increases security
  • Reduces air pollution
  • Ensures that sashes can be opened and closed smoothly and with ease

How long does it take to service a window?

Typically it takes one day to install our draughtsealing perimeter system  into two sash windows.

Does the installer make a mess?

Whilst your windows are being serviced a small amount of disruption due to noise, dust and opening to the elements is unavoidable. However, great care is taken to ensure disruption is always kept to a minimum. All work is carried out from the inside and dustsheets and dust extraction equipment are used. After completion of work, the room will be vacuumed and left tidy.

How do I pay?

A deposit of 25% is required when placing an order. The balance is due on completion of the works.  Payment can be made by cheque or bank transfer.

Will my property be secure whilst the work is taking place?

Yes. At the end of each day all windows are left either completed or fully secure.

Is the draughtsealing perimeter system suitable for Listed Buildings?

Yes, our system is suitable for listed buildings and conservation areas where replacement windows are deemed unacceptable. Listed Building consent is generally not required.

Should I consider replacing my wooden windows with uPVC

Your original sash windows contribute significantly to the character of your period property, an historic building starts to lose its integrity when any part of its original fabric is replaced. The original stone, wood and glass are usually of better quality than their equivalent modern materials and once removed, these hand crafted windows are lost forever along with the appearance of your home.

By installing the draughtsealing perimeter system similar benefits such as noise reduction, draught proofing, greater performance and increased comfort levels can be achieved without the need for unnecessary replacement.

Repairing, servicing and improving your original windows is almost always a more economic option than complete replacement. Wooden windows have been refined, tried and tested over centuries of use, and remain the most environmentally friendly, versatile, energy efficient and aesthetically pleasing window frame yet to be invented by man.

Is uPVC more secure than wood?

No. A blowtorch will bend a uPVC frame; a gasket can easily be removed with a screwdriver. No insurance company across Britain will give a householder a reduction on household insurance because a house has uPVC windows. Double glazed windows may be harder to smash (true of wood or uPVC) but are the bane of fire brigades because they are difficult to get into in an emergency. Older uPVC units are particularly susceptible to security failures and less expensive units can be relatively easy to lever open and even completely remove.

At Draughtsealing we have a good range of security locks available for sash windows.

Are uPVC windows easier to maintain?

It remains a common misconception that wooden window frames are troublesome to maintain and that uPVC windows are durable and value-for-money. However, properly coated and periodically painted wooden windows will last for a hundred years or more, current generation uPVC will begin to degrade and discolour after only twenty.

Can sash windows be reinstated to my property?

Yes. Sash windows can be reinstated to your property even if the original boxes have been removed. We can stylise your window to a classic design or arrange the replication of specific detail. We will match any mouldings or beads to the originals by inspecting an existing sash window or by matching with original sash windows in similar neighboring properties. All our new windows and doors exceed the requirements of the revised document L (October 2010) of the building regulations.

Can the draughtsealing perimeter system be installed into traditional wooden casement windows and doors?

Yes. The draughtsealing perimeter System can be installed into all period timber windows and doors.


We cover all of greater London within the M25