Draught proofing can help keep your home warmer and reduce wasted heat.
However, not every flow of air is a draught. Your home also needs ventilation to remove moisture and keep the air fresh.
So, the aim is simple: stop unwanted gaps, but keep the ventilation you need.
What Is a Draught?
A draught is unwanted air moving into or out of your home.
You may feel one around:
- windows
- doors
- floorboards
- loft hatches
- pipework
- letterboxes
- unused chimneys
Warm air can escape through these gaps. At the same time, cold air can enter.
So, your heating may need to work harder to keep the home warm.
Draughts and Ventilation Are Different
Draughts are usually unwanted.
Ventilation is needed.
Good ventilation helps remove:
- moisture
- smells
- cooking fumes
- stale air
- indoor pollutants
So, making a home completely airtight without thinking about ventilation can cause problems.
Instead, control where air enters and leaves.
Start With Windows
First, check around your windows.
Look for gaps between parts that should close tightly.
You may be able to use suitable draught-proofing strips around opening windows.
However, don’t seal parts that are meant to provide ventilation.
For example, some windows have trickle vents. These are small vents designed to let fresh air into the room.
So, don’t treat a trickle vent as a draught that needs to be blocked.
Learn more: Windows, Doors and Floors →
Check Your Doors
Next, check outside doors.
Look around:
- the sides
- the top
- the bottom
- the letterbox
- the keyhole
If you can feel unwanted cold air, suitable seals may help.
However, make sure the door can still open, close and lock properly.
Also, don’t block any vent that is there for a reason.
Check the Loft Hatch
A poorly fitting loft hatch can let warm air escape into the loft.
So, check that the hatch closes properly.
Draught seals around the edge may help.
Also, the hatch itself can often be insulated.
Learn more: Insulation and Heat Loss →
Check Floors and Skirting Boards
Older suspended timber floors can have small gaps between floorboards or around skirting boards.
These can sometimes cause noticeable draughts.
Suitable gap fillers may help.
However, suspended timber floors often need air to flow underneath them.
So, don’t block outside air bricks or other vents that help keep the space below the floor dry.
What About Chimneys?
An open chimney can allow air to move in and out of a room.
If a chimney is no longer used, there may be ways to reduce this airflow.
However, don’t simply seal it without checking what ventilation is needed.
Unused chimneys can still need some airflow to help manage moisture.
Also, never block a flue that is used by a working fire, stove, boiler or other fuel-burning appliance.
Pipes and Cables
Small gaps can sometimes be found where pipes or cables pass through walls or floors.
So, check these areas too.
Some gaps can be sealed.
However, the right material depends on where the gap is and what passes through it.
Take extra care around:
- hot pipes
- electrical cables
- boilers
- flues
- fires and stoves
If you are unsure, get suitable advice.
Why Does Ventilation Matter?
Everyday life adds moisture to your home.
For example:
- cooking
- showering
- bathing
- drying clothes
- breathing
If that moisture cannot escape, it can build up inside.
Then you may see more condensation.
Over time, this can also increase the risk of damp and mould.
So, ventilation is an important part of keeping a home healthy.
Use Extractor Fans
Kitchens and bathrooms can produce a lot of moisture.
So, extractor fans can be very useful.
Use them when cooking, showering or bathing.
Also, let them run for as long as needed afterwards.
This helps remove moisture before it spreads through the home.
Use Trickle Vents
Some windows have trickle vents.
These allow a small amount of air to enter even when the window is closed.
So, they can help provide steady background ventilation.
Don’t block them simply because you can feel cooler air nearby.
They are designed to let air move.
Opening Windows Can Help
Opening windows can also bring fresh air into the home.
However, leaving a window slightly open for a long time can also lose heat.
Instead, opening windows more fully for a shorter time can sometimes be useful when you need extra ventilation.
For example, this may help after cooking or showering.
However, your home’s ventilation needs will depend on how it is built and used.
Watch for Condensation
Condensation forms when moist air meets a cold surface.
You may notice it on:
- windows
- outside walls
- cold corners
- behind furniture
A little condensation does not always mean there is a serious problem.
However, regular or heavy condensation is worth looking into.
The cause may involve:
- too much moisture
- too little ventilation
- cold surfaces
- poor insulation
- a mix of these
So, don’t assume ventilation alone is always the answer.
Don’t Make Cold Walls Worse
Furniture placed tightly against a cold outside wall can reduce air