Draughts are a major cause of heat loss in UK homes, leading to discomfort and unnecessarily high energy bills. Addressing these unwanted air currents is one of the most cost-effective ways to make your home warmer and more energy-efficient. This guide will help you understand what draughts are, how to find them, and practical steps you can take to tackle them.
Draught-proofing your home is a smart way to reduce energy waste and improve comfort. Fuse Energy helps you manage your energy usage with clear pricing and in-app data, making it easier to see the impact of your efficiency efforts. Click here to switch to Fuse Energy today.
A draught is an unwelcome current of cold air entering your home through unintended gaps and cracks in the building's fabric. These uncontrolled air movements can make your home feel chilly, even when the heating is on, and significantly contribute to heat loss.
Understanding the impact on comfort and energy bills
Draughts can account for a significant percentage of heat loss in a home, potentially between 15% and 25% of total heat loss, particularly in older or poorly insulated properties. This means a portion of your heating bill is literally disappearing into thin air. The average UK home uses around 2,500 kWh of electricity and 9,500 kWh of gas per year. Losing a fifth of your heated air through draughts can quickly add up, increasing your energy consumption and, consequently, your bills. Simple draught-proofing measures can pay for themselves within a year through reduced energy bills.
Draught vs draft: clarifying the terms
In the context of airflow in a home, the correct British English spelling is draught. While "draft" is commonly used in American English for the same meaning, and also refers to other concepts like a preliminary version of a document or a type of beer, for the purpose of keeping your home warm and energy-efficient in the UK, we'll consistently use draught.
Identifying the source of a draught is the first crucial step towards effective draught-proofing. You don't need specialist equipment; often, your own senses are enough.
The "candle test" and other simple detection methods
One of the simplest ways to find a draught is to use a lit candle or an incense stick. Hold it near suspected gaps - if the flame flickers or the smoke is drawn in a particular direction, you've found a draught. You can also dampen the back of your hand and move it around potential problem areas; if it feels cold, there's likely a draught. On a blustery day, you might simply feel the cold air with your hands. Looking for visible light filtering through gaps can also indicate a draught.
Common culprits: windows, doors, and letterboxes
The most obvious places to check for draughts are around windows and doors. Cold air often seeps in through gaps around frames, under doors, and even through keyholes and letterboxes. Older windows, especially, can be significant sources of heat loss.
Hidden sources: floorboards, loft hatches, and pipework
Draughts aren't always obvious. Hidden sources can include gaps between floorboards and skirting boards, unsealed pipework where it enters or exits walls, around loft hatches, and even through unused chimneys. Electrical fittings in walls and ceilings, and gaps behind beams, can also be culprits.
Many draught-proofing solutions are DIY-friendly and cost-effective, offering immediate improvements to your home's comfort and energy efficiency.
Sealing gaps around windows and doors
For windows and doors, self-adhesive foam strips or brush strips are excellent choices. Apply them around the edges of window sashes and door frames to create a seal. For gaps under doors, a simple door snake or brush draught excluder can make a big difference. Keyhole covers and letterbox brushes can also prevent cold air from entering.
Tackling floorboards and skirting boards
Gaps in floorboards and between skirting boards and the floor can be sealed with a flexible filler, such as decorators' caulk. For larger gaps, consider using a timber filler or a specialised draught-proofing strip designed for floors.
Insulating loft hatches and pipework
Loft hatches can be a major source of heat loss. Seal the edges with foam strips and consider adding insulation to the top of the hatch itself. Where pipes enter or exit walls, use a suitable sealant or expanding foam to fill any gaps.
Chimney and extractor fan solutions
If you have an unused chimney, a chimney balloon or cap can prevent a significant amount of heat loss. For active chimneys, ensure the damper is closed when not in use. While extractor fans in kitchens and bathrooms are essential for ventilation, ensure they are not creating excessive draughts when not in use. Consider models with automatic shutters.
Beyond just comfort, a draught-free home offers several advantages that contribute to a better living environment.
Increased comfort and warmth
Eliminating draughts means your home will feel consistently warmer, without cold spots or sudden chills. This allows your heating system to work more efficiently, maintaining a comfortable temperature without constantly battling incoming cold air.
Reduced energy consumption and bills
By preventing warm air from escaping and cold air from entering, draught-proofing directly reduces the amount of energy needed to heat your home. This leads to lower energy consumption and, in turn, smaller energy bills. Simple measures can save households between £55 and £120 per year.
A healthier living environment
While some ventilation is necessary, uncontrolled draughts can bring in dust and allergens. Effective draught-proofing, combined with controlled ventilation (like extractor fans), helps maintain better indoor air quality and can reduce the risk of damp and mould by regulating air movement more effectively.
While many draught-proofing tasks are suitable for DIY, some situations may warrant professional help.
Assessing the scale of the problem
If your home is particularly old, large, or you suspect significant structural issues, a professional energy audit can pinpoint all sources of heat loss, including less obvious draughts. They can provide a comprehensive plan for improvement.
Finding reputable professionals
For more complex issues, such as draughts around sash windows in period properties or extensive gaps that require specialist materials, engaging a professional can ensure the work is done effectively and to a high standard. Look for professionals with experience in older properties or specific types of draught-proofing.
Long-term benefits of expert solutions
Professional draught-proofing can offer more durable and effective solutions, especially for hard-to-reach areas or intricate architectural features. While there's an upfront cost, the long-term benefits of a warmer home and sustained energy savings can outweigh the initial investment.
Taking control of your home's energy efficiency, like through effective draught-proofing, can make a real difference to your comfort and your bills. Fuse Energy is committed to making energy management clear and simple, with transparent pricing and 24/7 human customer support. Switching to Fuse is quick and easy, helping you take charge of your energy usage from day one. Click here to get started. You can also learn more about our mission to make energy abundant and affordable by clicking here.
