Is Sash Window Draught Proofing Worth It?

Learn how sash window draught proofing works, its benefits, costs and how it improves comfort in period homes.
Sash Window Draught Proofing

Short Answer

Yes, draughts are the biggest source of heat loss in many period homes and sash window draught proofing is one of the most effective ways to improve comfort and reduce heat loss in period homes without replacing original windows.

Why Are Sash Windows So Draughty?

Traditional sash windows were designed with small gaps to allow movement and ventilation.

Over time:

  • timber shrinks
  • cords wear
  • frames loosen
  • gaps increase

This allows cold air to enter the property and warm air to escape.


What Is Sash Window Draught Proofing?

Draught proofing involves sealing unwanted gaps around sash windows while still allowing the windows to operate normally and allowing for passive ventilation.

Mitchell & Dickinson achieve this by using discreet brush beading installed to all key points within the window’s construction.


What Are the Benefits?

Improved Comfort
Reduced draughts make rooms feel warmer and more comfortable.

Lower Heat Loss
Preventing uncontrolled airflow helps improve thermal efficiency.

Better Window Operation
If draught proofing is carried out with restoration this can often improve how smoothly windows open and close. See our guide on restoring original sash windows for more info.

Preservation of Original Features
Mitchell & Dickinson’s unobtrusive draught proofing improves performance without replacing historic windows.


Does Draught Proofing Replace Secondary Glazing?

Not necessarily.

Draught proofing and secondary glazing often work best together.

Draught proofing helps control airflow, while secondary glazing improves insulation and acoustic performance.

Is Draught Proofing Suitable for Listed Buildings?

Yes. if carried out sympathetically it preserves the original windows and can be discreet, draught proofing is often suitable for listed and conservation properties. Our sash window restoration specialists can advise you of the best solution for your listed property.


How Much Difference Does Draught Proofing Make?

Many homeowners notice:

  • fewer cold spots
  • improved comfort
  • reduced rattling
  • less external noise


The impact is often immediate, particularly in older sash windows.


Specialist Sash Window Draught Proofing

Mitchell & Dickinson specialise in draught proofing sash windows in period and listed homes.

Our approach is designed to:

  • preserve original joinery
  • improve comfort
  • reduce heat loss
  • maintain smooth operation


FAQs

Does draught proofing stop sash windows rattling?
Yes, professional draught proofing can help reduce rattling and movement.

Can draught proofing reduce heating bills?
Reducing heat loss may help improve energy efficiency and reduce heating costs.

Is draught proofing visible?
Most professional systems such as Mitchell & Dickinson’s are designed to be discreet and unobtrusive.