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Home Insulation Costs in Scotland 2023 – Spray Foam Insulation Cost Scotland

home insulation cost scotland


As energy bills in Scotland continue to rise, insulating your home has become increasingly important. It is crucial to find ways to lower energy costs and improve energy efficiency. Home insulation offers an effective solution to achieve these goals. In this comprehensive guide, we will delve into the costs associated with spray foam insulation, factors that influence pricing, and the available grants that can help homeowners reduce the overall expenses.

How Much Does Spray Foam Insulation Cost in Scotland?

The cost of spray foam insulation can vary depending on several factors, such as the size and type of your home, as well as the existing insulation. Spray foam insulation is generally more expensive compared to other insulation types and can range from £1,400 to £10,000. However, it offers exceptional thermal performance, often three times better than fibreglass insulation.

Factors Affecting Spray Foam Insulation Costs

Several factors can influence the cost of spray foam insulation:

  1. Material: The choice of insulation material significantly impacts the total cost. Spray foam insulation is a high-quality material that comes at a higher price compared to traditional fibreglass insulation. However, its superior thermal performance justifies the higher cost.
  2. Insulation Method: The installation method also affects the overall cost. While fibreglass insulation can often be a do-it-yourself (DIY) project, saving you the expense of hiring a professional, spray foam insulation requires specialised application techniques. It is essential to hire a professional for spray foam insulation to ensure proper installation. Attempting a DIY approach with spray foam insulation can result in damage, unpleasant odours, and ineffective insulation.
  3. Grants: There are various national and local grants available to assist homeowners in reducing the cost of spray foam insulation. It is advisable to explore potential grants in your area. Examples include the Warmer Homes Scotland scheme from Home Energy Scotland, which offers free insulation, heating and renewables for lower-income residents,  home insulation grants are available for loft, cavity wall, external wall insulation, roof insulation, internal wall insulation, underfloor insulation and room in roof insulation to residents in Scotland.

Benefits of Home Insulation

Investing in home insulation can yield significant benefits, especially if you can allocate funds to insulate specific areas of your home. Consider the following advantages:

  1. Loft Insulation: Insulating your loft can reduce heat loss by up to 50% and save you approximately £255 per year. Although the cost to insulate a loft in a three-bedroom semi-detached home with spray foam insulation is around £3,588, the insulation can last 80 to 100 years, making it a wise long-term investment.
  2. Cavity Wall Insulation: Cavity wall insulation, with an average cost of £1,200 for a three-bedroom semi-detached home, can save you approximately £285 per year. In this case, you would recoup your investment in just over four years, making it a financially sensible decision. However, it is important to be aware of common issues related to cavity wall insulation before proceeding with the installation.

Most Affordable Insulation Type

Pipe insulation is the least expensive type of insulation available, although it offers relatively minimal benefits. Insulating your pipes can save you approximately £3 per year, but the cost to cover all required pipes averages around £25, making it a worthwhile investment.

Cost-Effective Insulation Tips

If you’re looking to improve energy efficiency without breaking the bank, consider the following cost-effective tips for insulating your home:

  1. Draught-Proofing: Identify areas where heat can escape, such as pipework, windows, doors, and loft hatches. Use draught excluders, which cost around £10, to seal these gaps and save up to £50 per year on energy bills.
  2. Furniture Arrangement: Ensure that sofas and armchairs are not blocking radiators, as this restricts the circulation of hot air and reduces their effectiveness. Moving furniture away from radiators can make your rooms feel warmer.
  3. Carpet Underlay: Up to 15% of heat loss in a home occurs through the floor. Installing carpet underlay, which costs £3-8 per square metre, can help reduce this heat loss and save you up to £75 per year.

Government Grants for Insulation

Yes, there are several national grants available to help homeowners reduce the cost of insulation:

  1. Energy Company Obligation (ECO4): Residents in England may be eligible for grants towards loft insulation and cavity wall insulation, depending on certain requirements.
  2. Warmer Homes Scotland: This scheme provides grants for loft insulation, including spray foam insulation, and cavity wall insulation to residents in Scotland.
  3. Nest: Homeowners in Wales can access grants for loft and cavity wall insulation through the Nest scheme. However, spray foam insulation is currently not available under this program.

In addition to these national grants, there may be local grants specific to your area. For example, the York Home Upgrade Grant and the London Warmer Homes scheme offer funding for various home improvements, including insulation, with grant amounts ranging from £5,000 to £25,000.

Will Home Insulation Become More Affordable in the Future?

While it is challenging to predict the exact affordability of home insulation in the future, it is clear that prices must continue to decrease for the UK to achieve its net-zero emissions goals. With a significant number of older homes lacking proper insulation, there is a pressing need for improvement.

The removal of VAT on home insulation in April 2022 was a positive step in reducing costs. However, the UK still has work to do to make insulation more accessible for households facing financial constraints.


Although the removal of VAT on home insulation has helped alleviate costs, there is still room for improvement in making insulation more affordable for all. Currently, spray foam insulation is a highly efficient option with excellent thermal properties and a lifespan of 80 to 100 years. If you are considering spray foam insulation, you can fill out a simple form to receive bespoke quotes from trusted suppliers.

In the meantime, homeowners can explore cost-effective measures such as draught-proofing, rearranging furniture, and using pipe insulation to improve energy efficiency without incurring significant expenses. Additionally, national and local grants are available to help reduce insulation costs and make energy-efficient homes more accessible to all.

If you enjoyed this post, here is a more general post about insulation costs in 2023. Enjoy!

Author Avatar
Craig Maxwell
Craig Maxwell is an experienced professional with over 10 years of expertise in the field of insulation. Throughout his career, he has honed his skills and acquired in-depth knowledge in all aspects of insulation, specializing in both traditional and modern insulation techniques. Craig's passion for creating energy-efficient and comfortable living spaces has driven him to become a trusted expert in the industry.

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