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How much does Home Insulation cost? 2023

Average Price
£500

How much will it cost to get Home Insulation?

Want to make your home more energy efficient? Read our handy guide to find out how much home insulation will cost, depending on the type of improvement you wish to make.

What is Home Insulation?

Home insulation uses a variety of techniques to prevent heat from escaping from your home. It is usually achieved by adding a physical barrier between your walls and the outside elements.

Home insulation can be added inside your home as well as on the outside. The aim is to make your property more energy-efficient and reduce your energy bills in the process.

How much is Home Insulation? 

If you’re thinking about getting home insulation, you’re probably wondering how much it’ll set you back. We’ve done the legwork for you and researched the average price of home insulation based on local UK professionals: 

Average cost (in total) £500
Minimum cost (in total) £200
Maximum cost (in total) £22,000

Depending on the nature of the work you undertake and the size of your property, home insulation services range from £200 to £22,000 - so the cost can vary quite a lot! 

As home insulation varies dramatically in price, your budget will naturally be a top priority. Not all home insulation techniques are expensive, and any improvements you make to your property is better than taking no action at all. 

 It’s also good to remember that home insulation will for the most part pay for itself over time in reduced energy bills. External work may also improve the property’s curb appeal, potentially increasing its value too. 

Here are some of the main factors affecting price: 

Type of insulation:

  • Cavity wall 

  • Draught proofing

  • Floor 

  • Loft 

  • Solid Wall 

 Type of insulation 

Type of insulationHighest average priceLowest average price
Cavity wall £1,500£900
Draught proofing£200£50
Floor£2,220£770
Loft Insulation£395£285
Solid wall£22,000£8,000

The advantage of home insulation is even a small spend of £200 on draught-proofing can be hugely effective. The majority of services are under the £1,000 mark, which is far cheaper than other home improvement types. 

Solid wall home insulation is the most expensive ranging between £8,000 and £22,000. However, it will offer the very best protection against heat loss overall, as every inch of your external wall space will be insulated. It’s also very beneficial against providing damp and mould in your home, especially if it’s been caused by an ineffective render.

In some cases, you may be able to recoup the costs of home insulation from government energy grants or similar schemes. 

Cavity wall insulation

Cavity wall insulation works by filling the gap between the layer of bricks with a material that prevents heat transfer. The process is relatively straightforward and requires the installer to drill a series of holes at strategic points in your external brickwork. They will then fill it with a material such as mineral wool, polystyrene beads or polyurethane foam. The average cost of cavity wall insulation is between £900 and £1,500.

Draught proofing

Have you noticed certain areas of your home feel cold to sit in? Draught proofing seeks to remove gaps where warm air is escaping within your home. It is the cheapest form of home insulation costing as little as £50 to undertake. The average saving is £60 a year from draught-proofing so it’s highly worth doing.

Floor insulation

Floor insulation adds a layer of insulating material beneath the floorboards. As heat rises, it makes sense to trap it, to stop it escaping towards your roof space. 

The cost of floor insulation ranges between £700 and £2,220. It’s also worth noting that this doesn’t include the cost of new flooring, which may be required as your carpets will need to be ripped up to access the floorboards.

Loft insulation

Approximately a quarter of the heat lost in your home is through the roof space. Loft insulation is a thick material that is placed in your roof space, either along the joists or the rafters. The lightweight yet hefty padding creates a physical barrier between the heat rising at the top of the roof. Loft insulation averages at about £300 and is fairly easy to install. 

Solid wall insulation

Older properties that aren’t able to benefit from cavity wall insulation can have solid wall insulation performed instead. The process involves applying installation boards to the external walls of your home. A base coat and a mesh is then applied over the top of the boards to ensure the entire facade is resistant to impact. Finally, a render is applied to complete the job. The benefits of rendering your home are that not only will it reduce your energy bills, but will greatly enhance the look of your property too.

Solid wall insulation ranges from £8,000 to £22,000 depending on the size of your property. While it’s the most expensive option, it’s the best way to weatherproof your home. It can also reduce any damp or mould issues that were caused by faulty or even a lack of rendering.

Is it worth getting Home Insulation? 

Absolutely, especially if your home has poor energy efficiency or generally feels cold to sit in. Any home insulation you undertake will make your home greener and reduce your energy bills in the process. In many cases, the work will pay for itself with the money you will save on heating your home. 

Invest in your property with home insulation and make your home warmer and greener in the process. Find local tradespeople to carry out the work with Bark.

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