If you’re planning to sell, rent or remortgage your home, your Energy Performance Certificate (EPC) rating is more important than ever. A good rating can make your property more attractive to buyers, reduce energy bills and even improve your chances of getting a mortgage.
The problem is that if your loft has spray foam insulation, surveyors often see it as a risk, which can leave you with a lower EPC rating than you might expect.
In this blog, we’ll explain:
- What an EPC rating is and why it matters
- How insulation plays a key role in energy efficiency
- Why spray foam can actually hurt your EPC rating
- How professional removal can help restore your home’s value
What is an EPC Rating?
An Energy Performance Certificate (EPC) is an official document that assesses the energy efficiency of a property. It gives the home a rating from A (very efficient) down to G (very inefficient), with the rating based on factors such as heating, insulation and how much energy the property is likely to use.
By law, every home sold or rented in the UK needs an EPC. Buyers and tenants often use the EPC rating to compare homes, and lenders will look at EPC scores when deciding on mortgages or remortgages.
For homeowners, a higher EPC can mean:
- Lower energy bills (less heat escapes through walls, roofs and windows)
- Increased property value (efficient homes often sell faster)
- Better mortgage prospects (lenders tend to favour properties with higher EPC ratings)
The Role of Insulation in EPCs
One of the biggest factors that determines a home’s energy efficiency is heat loss through the roof. In fact, up to a quarter of a property’s heat can escape this way if it isn’t properly insulated. That’s why loft insulation plays such an important role in your EPC rating.
With traditional insulation such as mineral wool or fibreglass, it’s straightforward for an EPC assessor to check how well your home is protected. They can easily:
- Measure the insulation depth to see how effective it is.
- Check the ventilation to ensure the loft can breathe and avoid damp.
- Inspect the roof structure to confirm the timbers are sound.
If everything is in good condition, this usually helps to push your EPC rating up.
How Spray Foam affects EPC Ratings
Unlike traditional insulation, spray foam creates serious complications for EPC surveys. As spray foam is sprayed directly onto the underside of the roof, it completely covers the timbers and structure. This means the assessor can’t see what’s underneath or measure how effective the insulation really is, and often has to mark it down, which can drag your EPC rating lower than expected.
Additionally, spray foam is often associated with issues such as trapped moisture, dampness, and poor ventilation. Even if the home feels warmer, surveyors are aware of the risk and typically take a cautious approach when evaluating the property. The Royal Institution of Chartered Surveyors (RICS) has even flagged spray foam as a problem for mortgage valuations, meaning that for many homeowners, it ends up hurting EPC ratings rather than helping them.
The main reasons spray foam can lower your EPC rating are:
- Hidden roof structure: Spray foam covers timbers, so assessors can’t check them.
- Risk of damp and rot: Trapped moisture can lead to mould and timber damage.
- Negative reputation: Lenders and insurers view spray foam as high risk, resulting in lower scores.
Why Spray Foam Removal Helps EPC ratings
The good news is that spray foam problems don’t have to be permanent. Once the insulation is professionally removed, EPC surveys become far more straightforward and reliable.
Here’s how removal can help your EPC rating:
- Accurate inspections: Surveyors can properly inspect the roof timbers, ventilation, and insulation.
- Recognised insulation: After removal, you can fit traditional materials, such as mineral wool or rigid boards, that assessors accept.
- Reassured buyers and lenders: Removal removes the red flag for mortgage providers, insurers and potential buyers.
For many homeowners with spray foam insulation, removal is the most effective way to protect their EPC rating, property value and future plans to sell or remortgage.
Restore Your EPC rating with Spray Foam Removal Services
Your EPC rating has a big impact on your home’s running costs, value and ability to sell or remortgage. Spray foam may appear to be an energy-saving upgrade, but in reality, it often harms EPC ratings and raises concerns for surveyors, lenders, and insurers.
The good news is, you don’t have to live with these issues. By removing spray foam and replacing it with compliant insulation, you can improve your property’s energy efficiency.
At Remove Spray Foam, we specialise in safe and efficient foam removal, as well as roof repair and the installation of new, surveyor-approved insulation. Our team provides a professional, hassle-free service designed to protect your home and improve your EPC rating. We can also supply a Spray Foam Removal Certificate, to give buyers, lenders and surveyors peace of mind that your property is compliant and mortgage-ready.
If your EPC rating is being held back by spray foam insulation, let us help you turn things around. Contact us today for a free, no-obligation inspection and quote, and take the first step toward unlocking your home’s full energy potential.
FAQs
Does spray foam insulation lower EPC ratings?
Yes, surveyors often downgrade properties with spray foam because they cannot inspect the roof properly and are aware that it can cause damp issues.
Will removing spray foam improve my EPC rating?
Usually, yes. Once spray foam is removed, surveyors can inspect the roof and record compliant insulation, which often helps your rating. Learn more in our blog: Signs you need spray foam insulation removed from your roof?
Can I sell my house with spray foam and a low EPC?
It’s possible, but many buyers and lenders will be put off. Removal makes selling much easier, see how ‘Quick-fix’ spray foam removal can leave your home unsellable.
How can I fix spray foam problems?
The safest option is to have it professionally removed and replaced with traditional insulation that surveyors and lenders accept. Here’s how to prepare for spray foam removal.
