Octave Resolution Services

šŸ“ž 24/7 Crisis Support

Is My Spray Foam Making My Home Unmortgageable?

Last updated: May 2026

If you're reading this, you've probably just been told by a mortgage lender or surveyor that your spray foam insulation is a problem. You're not aloneā€”thousands of UK homeowners are discovering that what was sold as an "energy-saving upgrade" has made their homes impossible to sell or remortgage.

This guide explains exactly what's happening, why lenders are refusing mortgages, and what you can do about it.

āš ļø The Short Answer

Yes, spray foam insulation can make your home unmortgageable. Many UK lenders now refuse to approve mortgages on properties with spray foam in the roof space, particularly if it's closed-cell foam or if there's evidence of moisture problems.

Why Are Lenders Refusing Mortgages?

Mortgage lenders have three main concerns about spray foam insulation:

1. Trapped Moisture and Rot

Spray foam creates an airtight seal in your roof space. While this sounds good for insulation, it means moisture has nowhere to go. Traditional roofs "breathe"ā€”air circulates, and moisture evaporates. With spray foam, moisture gets trapped, leading to:

2. Inability to Inspect the Roof

When a surveyor inspects a property for a mortgage, they need to see the condition of the roof timbers. Spray foam covers everything, making it impossible to check for:

Lenders won't approve a mortgage if they can't verify the roof is sound.

3. Removal Costs

If the foam needs to be removed, it's expensive and destructive:

Lenders see this as a significant financial risk.

Which Lenders Are Refusing Mortgages?

As of 2026, many major UK lenders have policies against spray foam:

šŸ’” Important Note

Lender policies change frequently. Even if one lender approves, others may not. This severely limits your buyer pool if you're trying to sell.

What About "Properly Installed" Spray Foam?

You might have been told your spray foam was "properly installed" with adequate ventilation. Unfortunately:

The problem is that lenders don't care if it was installed correctly. They see spray foam as a risk, period.

Real-World Consequences

Here's what homeowners are experiencing:

Unable to Sell

Buyers can't get mortgages, so your property is effectively unsellable to anyone who needs financing (which is most buyers).

Unable to Remortgage

When your fixed-rate deal ends, you're stuck with your current lender's standard variable rateā€”often significantly higher.

Property Devaluation

Properties with spray foam are worth less. Some are worthless until the foam is removed.

Removal Costs

If you want to sell or remortgage, you'll likely need to pay Ā£10,000-Ā£30,000+ to remove the foam.

Health Impacts

Trapped moisture leads to mold, which can cause respiratory problems and other health issues.

What Can You Do?

1. Get a Specialist Survey

Some lenders will consider a property if a specialist surveyor confirms:

However, this is expensive (Ā£500-Ā£1,500) and doesn't guarantee approval.

2. Hold the Contractor Accountable

If you were mis-sold spray foam insulation, you may be entitled to:

This is where professional resolution letters make a difference.

šŸ“ Why Professional Letters Work

Contractors often ignore homeowner complaints. A professionally written resolution letter:

This forces contractors to take your complaint seriously.

3. Consider Removal

If you need to sell or remortgage soon, removal may be your only option. Costs vary based on:

Get multiple quotes from specialists, not general builders.

4. Explore Alternative Lenders

Some specialist lenders may consider properties with spray foam, but expect:

Legal Grounds for Complaints

If you were mis-sold spray foam, you likely have grounds for complaint under:

Consumer Rights Act 2015

Services must be performed with reasonable care and skill. If the contractor:

...they breached the Act.

Consumer Protection from Unfair Trading Regulations 2008

If the contractor:

...this is a criminal offense.

Section 75 (If Financed)

If you paid for the spray foam with a credit card or finance agreement, your lender is jointly liable for breaches of contract.

What a Resolution Letter Should Include

An effective complaint letter must:

  1. Document the mortgage refusal: Include lender letters and surveyor reports
  2. Cite specific laws: Consumer Rights Act, Consumer Protection Regulations
  3. Quantify financial harm: Removal costs, property devaluation, higher mortgage rates
  4. Demand specific remedies: Removal, refund, compensation
  5. Set deadlines: 14 days to respond, escalation to FOS if ignored
  6. Include evidence: Photos, contracts, correspondence, lender letters

Get Expert Help with Your Spray Foam Complaint

Our professional resolution letters have helped hundreds of homeowners hold contractors accountable for spray foam mis-selling.

We specialize in mortgage crisis cases and know exactly what lenders need to see.

Check Your Eligibility

Frequently Asked Questions

Can I just sell to a cash buyer?

Yes, but cash buyers know you're desperate and will offer significantly below market valueā€”often 20-40% less.

Will removing the foam solve the problem?

Usually, yes. But removal is expensive, and you may discover roof damage underneath that needs repair.

Is all spray foam bad?

No, but lenders don't distinguish. Even properly installed, breathable foam can cause mortgage refusals.

Can I sue the contractor?

Possibly, but litigation is expensive and slow. A formal complaint letter is faster and often more effective.

What if the contractor has gone out of business?

If you paid with credit or finance, claim against the lender under Section 75. If cash, check if they had insurance.

Take Action Now

If spray foam is affecting your mortgage or property value, don't wait. The longer you delay, the more financial harm you suffer.

A professionally written resolution letter is your first step toward holding the contractor accountable and recovering your losses.

Start your case assessment now ā†’