Spray Foam Surveys: What Lenders and Surveyors Look For

If your home has spray foam in the roof, a lender, buyer or surveyor may ask for a specialist inspection. What the published guidance actually says, what an inspection involves, what it costs, and how to choose someone independent.

There Is No Single Lender Rule

Lender policies differ and change often. Some lenders decide case by case after a survey; others will not lend where spray foam is present. Ask your lender or a mortgage broker what report they need before you book anything.

Why Is a Spray Foam Survey Often Requested?

The RICS consumer guide on spray foam (March 2023) says the presence of spray foam "could affect a surveyor's professional opinion of value", that surveyors must follow their lender clients' instructions, and that spray foam restricts inspection of the roof space. Because the foam hides the timbers and roof covering, a standard survey often cannot say what condition they are in.

The Guidance That Actually Exists:

RICS consumer guide (March 2023): the only RICS spray foam guidance. It is a consumer guide, not survey rules; there are no RICS spray foam rules from 2024, 2025 or 2026.
PCA Sprayed Foam Insulation Inspection Protocol (March 2023): written by the Property Care Association with the RPSA and a lender and surveyor working group, for surveyors assessing pitched roofs with spray foam.
IMA Code of Practice (May 2023): the Insulation Manufacturers Association's code for installing spray foam in roofs.
Building Safety Regulator research (28 March 2024): moisture risks are low for open-cell foam applied in line with BS 5250:2021, and highest where foam is applied directly to the roof covering.

There is currently no dedicated British Standard for spray foam removal.

What a Lender or Buyer May Ask For:

An independent inspection: the RICS guide recommends expertise commercially separate from the installer and manufacturer
A report to a recognised protocol: for example, an inspection by a PCA spray foam assessor
Installation paperwork: contract, calculations, details of roof works, guarantee and product certificate (the RICS guide says to keep these)
Details of any repairs: if defects were found and put right

Survey Types Compared

Survey Type	What It Covers	Cost	With Spray Foam
RICS Level 1 (Condition Report)	Brief visual inspection with condition ratings.	Get a quote	Notes it, limited detail
RICS Level 2 (HomeBuyer Survey)	Visual inspection with condition ratings and advice on defects.	Get a quote	May recommend further inspection
RICS Level 3 (Building Survey)	The most detailed RICS Home Survey, with more detail on defects and repairs.	£630-£1,500 depending on property value	Still cannot see behind foam
Specialist Spray Foam Survey	Focused inspection of the foam, the roof covering and the roof timbers, with written findings.	£500-£700	Designed for it

Typical Costs

The HomeOwners Alliance puts a specialist spray foam survey at £500-£700 and a RICS Level 3 survey at £630-£1,500 depending on property value. Get a fixed quote and confirm what is included. Last reviewed September 2026.

What Happens During a Spray Foam Inspection?

Inspections vary with the roof and the inspector, so ask in advance what will be done. A thorough inspection usually covers the following.

Loft Access and Initial Inspection

The inspector looks at how much of the roof is covered and records the foam type and general condition.

Checks performed:

• Type of foam (open-cell or closed-cell)
• Coverage (whole roof or partial)
• Visible damage, sagging or foam coming away
• Evidence of water getting in (staining, drips)

How and Where the Foam Was Applied

The Building Safety Regulator's research found the highest moisture risk where foam is applied directly to the roof covering, and that an air and vapour control layer reduces the risk.

Lower-risk signs:

• Open-cell foam applied in line with BS 5250:2021
• Foam not stuck directly to tiles, slates or felt
• A well-maintained roof with no leaks
• Installation paperwork available

Higher-risk signs:

• Foam sprayed directly onto the roof covering
• Closed-cell foam, which is not vapour permeable
• Leaks, damp or condensation
• An old or poorly maintained roof

Looking at the Timbers

To see the timbers, an inspector may need to cut back small areas of foam. This should only happen with your permission (or the seller's, if you are buying).

What may be checked:

• Visible condition of the timber (discolouration, softness)
• Moisture readings
• Signs of fungal decay
• Photos of what was found

Ask first: what will be cut back, and who makes good afterwards.

Overall Roof Condition

The general state of the roof matters as much as the foam. The Energy Saving Trust says no insulation should be applied to a leaking roof.

Broader roof checks:

• Slipped, cracked or missing tiles
• Condition of any felt or membrane
• Chimney and flashing
• Valleys, gutters and downpipes
• Signs of structural movement or sagging

The Report

A written report with photographs and clear recommendations.

A useful report includes:

• A clear summary of findings and risk
• Whether it follows a recognised protocol, such as the PCA's
• Photos of the foam, roof covering and any exposed timbers
• Moisture readings and where they were taken
• Recommendations (monitor, repair or remove) with reasons
• The inspector's details, membership and independence

What the Findings Can Mean

Low Risk Found

The Property Care Association's consumer guide says removal may not be needed where the risk is low. Keep the report with your property documents. A lender will still make its own decision.

Issues to Put Right

For example a roof leak, localised timber damage, or a moisture control problem. The fix depends on the finding, so get written quotes and ask whether a re-inspection will be needed afterwards.

Removal Recommended

For example where foam stuck to the roof covering is causing damage, or decay is widespread. The HomeOwners Alliance says removal is likely to cost thousands of pounds and may mean replacing the roof. See our removal cost guide.

How to Find a Qualified Spray Foam Surveyor

Not Every Surveyor Specialises in Spray Foam

Ask about experience with spray foam roofs and check what your lender needs before you book. The Property Care Association has no in-house surveyors and has warned about people posing as PCA surveyors.

What to Check:

PCA spray foam assessor: the Property Care Association has a membership category for spray foam assessors. Search the PCA Find a Specialist page.
RICS-regulated surveyor or firm: if you want a RICS survey, check the firm on RICS Find a Surveyor.
Independence: the RICS guide recommends expertise commercially separate from the installer and manufacturer. Ask whether the inspector also sells removal or repairs.
Professional indemnity insurance: ask for details before you book.
What your lender needs: ask your lender or broker which kind of report they will accept, so you do not pay for the wrong one.

Questions to Ask Before Booking:

1. "How much experience do you have inspecting spray foam roofs?"
2. "Do you follow the PCA Sprayed Foam Insulation Inspection Protocol?"
3. "Are you independent of the installer, the manufacturer and any removal contractor?"
4. "Will you need to cut back any foam to see the timbers, and who makes good?"
5. "What equipment will you use, and what will the report include?"
6. "Is the price fixed, and what exactly does it include?"
7. "When will I receive the report?"
8. "If you find problems, will the report say what needs doing and why?"

Red Flags:

✗An inspector who also sells removal and says it is always needed
✗Cold callers claiming to be from the PCA or a government scheme
✗Claims of "new RICS rules" that require removal (there are none)
✗Pressure to book removal before you have an independent report
✗Unwilling to confirm membership or insurance details

If the Survey Finds Problems: Your Options

Which route makes sense depends on what was found, whether you own the home or are buying it, and what your lender needs.

Option 1: Remove the Spray Foam

Removal, timber repairs, any roof covering work, and re-insulation. Checkatrade's July 2026 guide gives removal from about £40/m², more for closed-cell foam, before repairs and re-insulation.

Removal does not guarantee a mortgage: each lender decides for itself, so check first and keep all the paperwork.

Learn more: Spray Foam Removal Process →

Option 2: Targeted Repairs

Fix the specific problems found, such as a leak or damaged timbers, and ask whether a re-inspection is needed afterwards. Get written quotes and confirm with your lender that this will be enough.

Option 3: Speak to a Mortgage Broker

Lender policies differ. A broker can tell you which lenders may consider the property and what evidence they need.

Learn more: Spray Foam and Lenders →

Option 4: If You Are Buying

Ask the seller for the installation paperwork and any existing reports, discuss the findings with your conveyancer, and decide whether to renegotiate, ask for work to be done first, or walk away.

Option 5: If the Foam Was Badly Installed

There is no government funding for removal. The government's position, summarised by the House of Commons Library, is that remediation goes through the installer first, then any insurance-backed guarantee, then TrustMark if the installer was TrustMark-registered (see the TrustMark complaints process).

For anything beyond that, get independent advice, for example from the Citizens Advice consumer helpline on 0808 223 1133.

Sources

Last reviewed September 2026.

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