Draughts are one of the biggest sources of heat loss in a building. In a typical period property (one with no modern insulation measures applied), we estimate that draughts cause approximately 30% of total heat loss.
Most property owners know where draughts come from and where they are worst because they can feel them! Windows, doors and chimneys will normally be responsible for most draughts. Mitchell & Dickinson can help you identify your draught sources and improve your building’s thermal performance.
How does draught proofing work?
The draughtiness of a building is determined by the amount of air that can pass through the external fabric – walls, roof, floor, windows and doors. This is called air permeability. Most listed and period buildings are permeable, ie they were not designed to be completely sealed from the external environment. However, the important factor is not the permeability itself but the rate at which air passes through the building.
Draught proofing is a process that involves sealing gaps and openings around and in windows and doors to prevent cold air from entering and warm air from escaping. This is achieved by fitting draught strips and other products to improve thermal performance. This helps create a more comfortable and energy-efficient internal environment.
How effective is draught proofing?
Different products and levels of expertise will achieve varying levels of effectiveness. Mitchell & Dickinson use durable and long-lasting materials suited to the fabric of your home and apply our superior craftsmanship to fit them. We estimate that our full draught proofing service will reduce draughts by approximately 70% in a typical period building. We don’t aim for a 100% reduction as traditional buildings need a certain amount of background ventilation so they can ‘breathe’, meaning that moisture does not get trapped.
Why is some ventilation important in period properties?
Ventilation is crucial in period properties to maintain structural integrity, prevent damp and mould, and ensure a healthy living environment. Proper airflow helps control moisture levels, reducing the risk of condensation, rot, and decay in building materials like wood. It also removes stale air and indoor pollutants, improving air quality and overall comfort. By facilitating the escape of warm air and the entry of cooler air, ventilation aids in temperature regulation, potentially lowering energy costs.
In addition to preserving the original architectural features and finishes, effective ventilation supports the longevity and safety of period properties. For homeowners, ensuring good ventilation means safeguarding their investment and creating a more comfortable and healthier living space.
How easy is it to draught proof a period property?
Draught proofing is a versatile solution that can be applied to various types of windows and doors, including sash windows, casement windows and timber doors. Mitchell & Dickinson offers tailored draught proofing options to suit different architectural styles and materials. Leaded windows and stone mullions present particular challenges but in most cases, we can reduce draughts using our CosyGlazing secondary glazing system.
What makes Mitchell & Dickinson’s draught proofing different?
While some draught proofing solutions, especially DIY products, are applied to surfaces of windows and doors, Mitchell & Dickinson’s draught proofing solutions are designed to be discreet and preserve the aesthetic appeal of your windows and doors. Our solutions are practically invisible!
Our range uses durable rubber window and door seals fitted into elegant timber beading, routed-in door brushes and concealed-brush beading for sash windows. It looks attractive, unobtrusive and, most importantly, does the job. Our goal is to enhance energy efficiency without compromising the visual charm of your property.
How long will it take to draught proof my period property and how much does it cost?
The installation time for draught proofing varies depending on the size of the project and the number of windows and doors being treated. Our experienced teams work efficiently to minimise disruption, and we’ll provide a timeframe during the consultation process.
The cost of draught proofing depends on factors such as the size of your property, the number of windows and doors, and the extent of draught proofing required. Remember investing in energy efficiency measures should save you money in the long term as you won’t have to use as much energy to keep your home warm.
For a personalised quote, please contact Mitchell & Dickinson for a consultation.
