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How much does draught proofing cost?

Fed up living in a draughty house? Curious to find out how much draught proofing costs? Keep reading to learn more about the benefits of draught proofing, how to do it, and how much it'll set you back.

If you’re looking for information on draught proofing cost, you’re in the right place.

We know how uncomfortable cold breezes can make your living space. From cold air filtering down the chimney to gaps around windows, doors, and skirting boards; uncontrolled cold air entering your home will make it harder to keep the place warm.

The good news is, draught proofing is one of the most cost-effective ways to save money on your energy bills. It’ll also keep your home a more comfortable temperature and will lower your carbon footprint too.

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Draught proofing cost breakdown

So what’s the average cost of draught proofing your home? Here, we outline the cost of draught proofing the most common areas of the home where cold air finds its way in.

Cost of provided itemUnitAverage cost (excl. VAT)
Window (applying strips or caulk/sealant)Per window£50
Door (stormguard seal on external door, plus letterbox and keyhole draught excluders)Per door£100
Chimney draught excluderPer chimney£50
Chimney pot coverPer chimney£150
Floorboards & skirting board (applying caulk or filler to gaps)For 3 average-sized rooms£100
Loft hatch (applying strips around the edges)Per loft hatch£50
Pipework (filler applied to radiator pipework gaps)£50
Old extractor fans (new brickwork on exterior and plaster finish internally)Per extractor fan£400
Cracks in the walls (ready mixed mortar for small cracks)£100

Our costs are ballpark averages – get a local tradesperson to quote now

There are different ways to draught proof your home, as shown in the table above. Each of these will have a part to play in saving you money on your energy bills.

For example, draught proofing your windows and doors and blocking up cracks in the floorboards and skirting could save you around £44/year on your energy bills.

How much does it cost to draught proof your windows?

Draughty windows are typically remedied with weatherstripping and/or caulk to seal any gaps or cracks. Draught proofing this area typically costs in the region of £50 per window.

Related content: How to stop draughts around windows

What does it cost to draught proof doors?

A stormguard seal can be used on an external door, alongside letterbox and keyhole draught excluders. This will help to limit the flow of cold air coming in and the heat from escaping. You’re looking at roughly £100 per door for this job.

Tip: Close doors to rooms that you don’t normally heat and place a cushion draught excluder at the bottom of the door to stop the cold air from entering the rest of the house.

How much does it cost to draught proof a chimney?

There are two main ways to draught proof a chimney that’s not in use:

  • Fit a chimney pot cover, costing in the region of £150
  • Install a chimney draught excluder inside the flue, costing around £50 per chimney

Draught proofing your floorboards and skirting boards

Floorboards look the part, but original floorboards in particular can let unwanted cold air in.

One method of draught proofing floorboards and skirting is to apply a flexible filler or caulk to any gaps. For three average-sized rooms, this will cost around £100.

Tip: Lay a large, thick rug to add an additional layer of insulation to your wood flooring.

A large rug on wooden floorboards to help with draught proofing

How much does it cost to draught proof a loft hatch?

Warm air rises and can easily be consumed by a drafty loft space via gaps around the loft hatch. This can be fixed by applying strips around the edges of the loft hatch at a cost of around £50.

What does it cost to draught proof pipework?

If you’ve noticed gaps around the pipework to your radiators, this is another area that needs draught proofing. Silicone filler can be applied to these gaps, costing around £50 to do. Larger gaps will require an expanding polyurethane foam.

Draught proofing old extractor fans

An old extractor fan left idle will let cold air flow into your home so it’s often worth removing it. To take out an old extractor fan, replace the exterior hole with new brickwork, and apply a plaster finish internally will cost in the region of £400.

How much does it cost to remedy cracks in walls?

Small cracks in the walls of your home will contribute to the amount of cold air that finds its way in. Fill these with ready mixed mortar (costing around £100).

Tip: Larger cracks that are long and can fit fingers in may indicate a serious issue that should be investigated by a structural engineer.

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The draught-proofing mistake to avoid

It’s important to remember that your home needs a certain amount of ventilation to help reduce condensation and damp.

Ventilation (controlled air flow) and draughts (uncontrolled) are two different things.

While draughts allow cold air to freely flow into your home and warm air to escape, ventilation allows fresh air in when needed.

Examples of ventilation in your home include extractor fans, airbricks, wall vents, and trickle vents (in windows). These should not be blocked up, especially in rooms where moisture is produced, such as kitchens and bathrooms.

In summary

Draught-free homes are more comfortable at lower temperatures, meaning you won’t need to turn the thermostat up so high. So as well as creating a warm and snug environment, draught proofing could save you money on your energy bills too.

You can retrofit a house with draught proofing measures. This could set you back around £180.

To find a draught proofing expert in your local area, simply add your postcode to the search box below. All our members are checked and approved by us, so you know you’re getting the real deal.

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Working with professional estimators, we collate cost estimates for the common home improvement and repair jobs in the UK.

All the costs are estimates only. For accurate costs for your particular requirements, you are encouraged to reach out to professional tradespeople to receive a quote for your job.

Our estimators are Chartered Members (MRICS) of the Royal Institution of Chartered Surveyors and Members of the Chartered Institute of Building (MCIOB). See full disclaimer.

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