Key Takeaways
- Spray foam may constitute a material fact that insurers expect to be disclosed.
- Failing to disclose material facts can affect the validity of claims — regardless of whether the claim relates to the foam.
- Insurers vary in how they treat foam — some may not adjust terms; others may impose conditions or exclusions.
- Removal plus RICS certification removes the ambiguity and restores standard insurable status.
- Always check your specific policy and contact your insurer directly — this article is not insurance advice.
Disclosure and Material Facts
In UK insurance law, policyholders are required to disclose any information that would be material to an insurer’s decision to offer cover or set the premium. A “material fact” is anything a prudent insurer would want to know — even if it does not seem obviously relevant to you.
Spray foam insulation is a modification to the fabric of your property. Depending on how it was installed — particularly if it has affected the roof’s ventilation and moisture management — it represents a change from the standard construction that your policy originally covered.
Different insurers take different positions on what constitutes a material fact. Some insurers specifically ask questions about spray foam or non-standard insulation materials on their application forms. Others do not — but this does not mean the foam is irrelevant to them.
The safest and most legally sound approach is to disclose the foam to your insurer proactively and ask how it affects your cover.
Potential Implications for Cover and Claims
If you have spray foam insulation and you make a claim — for any reason — the insurer will investigate the property during the claims process. If they discover spray foam that was not disclosed, they may:
- Investigate whether the foam constitutes a material fact that should have been disclosed
- In serious cases, question the validity of the policy from inception
This is particularly significant where the claim relates to the roof — for example, a claim for storm damage, water ingress, or structural damage. The insurer’s investigation will naturally examine the roof’s condition and construction.
This is not a certainty — insurers deal with claims pragmatically, and the vast majority of spray foam policyholders with buildings insurance will never face a claim scenario where the foam is relevant. But the risk of an undisclosed material fact affecting a claim is real and is best eliminated by upfront disclosure.
How Removal and Certificate Helps
Professional removal followed by an independent RICS-verified certificate means:
- The foam is no longer present — no question of non-disclosure relating to foam
- The roof has been certified as sound by an independent RICS surveyor — supporting the property’s insurable value
- Any lender or insurer can treat the property as standard construction
This removes ambiguity at every level — insurance, mortgages, and resale — simultaneously.
Practical Steps
Step 1 — Check your current policy. Read your buildings insurance policy documents and application form carefully. Look for questions about property modifications, insulation, non-standard construction, or material changes to the building since the policy was taken out.
Step 2 — Contact your insurer. Call or write to your insurer and ask specifically whether spray foam insulation on the roof structure is a material fact under your policy. Ask whether your current cover is affected and what, if anything, they require. Get the response in writing.
Step 3 — Shop the market if needed. If your current insurer imposes conditions, exclusions, or a premium increase, compare this with what other insurers offer. Some insurers are more experienced with spray-foam-affected properties than others.
Step 4 — Consider removal. If insurance complications add to the reasons for removal — alongside the mortgage and structural concerns — that is a meaningful factor in your decision-making.
The Bottom Line
Spray foam is a potential material fact for insurance purposes. The appropriate response is transparent disclosure to your insurer and a direct conversation about your cover. Removal and certification resolves the uncertainty permanently. Do not assume the foam is irrelevant to your insurance policy — find out.
Book an independent inspection or request a removal quote to understand and resolve your situation.
This is general information, not financial advice — please consult a qualified mortgage broker about your circumstances.
Related reading: Does spray foam devalue your house? · 7 warning signs your spray foam is causing problems · Spray foam & home mortgages — the full guide