Spray Foam Insulation Surveys in London
Buying or selling a home with foam insulation? Many UK lenders now refuse mortgages on properties with it unless a spray foam insulation survey is carried out by a qualified, independent expert. At Drysolve Surveying, we provide spray foam insulation surveys in London, offering homeowners, buyers, and professionals clear, trusted advice to avoid costly delays and damp-related damage.
All inspections are performed by Michael, a fully qualified, independent surveyor with over 10 years of experience and certifications including CSRT and CSSW.
What Is a Spray Foam Insulation Survey?
A spray foam insulation survey is a professional inspection of insulation applied within loft spaces, roof voids, or cavity walls. The goal is to assess whether spray foam has caused any hidden structural or ventilation issues, and whether it poses a risk to timber, air flow, or mortgage viability.
This type of insulation is common in loft conversions and retrofitted homes. But when installed improperly - or in the wrong context—it can cause significant problems that go unnoticed without specialist inspection.
Issues We Commonly Find During Spray Foam Insulation Surveys
Through our extensive work across the area, we routinely uncover risks that aren’t visible during general inspections or standard homebuyer reports.
Mortgage Rejections
Many mortgage lenders will reject properties with spray foam unless a report is provided by an independent, qualified surveyor. Without it, sales fall through or are delayed.
Hidden Timber Decay
Spray foam can trap moisture against roof timbers, leading to rot, fungal decay, and infestation. These problems often remain hidden until major structural work is required. In some cases, we recommend pairing your spray foam check with a full timber survey for complete clarity.
Condensation and Mould
Blocked ventilation in roof spaces due to foam leads to trapped humidity, condensation, and black mould. This often mirrors issues found during a condensation survey, but requires specific treatment linked to insulation.
Safety Hazards
In some properties, foam has been applied over wiring or fire-sensitive areas, creating unapproved and potentially dangerous conditions.
What Our Spray Foam Insulation Survey Involves
We provide thorough, non-invasive inspections backed by years of technical training and fieldwork across homes in boroughs such as Islington, Southwark, and Clapham.
External and Internal Evaluation
We review the type of foam (open-cell or closed-cell), where it’s been applied, and how it affects airflow, access, and structural visibility.
Moisture and Timber Testing
Using damp meters, thermal cameras, and probes, we check for excess moisture, timber softness, and ventilation gaps. This builds a complete picture of risk.
Mortgage-Ready Reporting
You’ll receive a detailed, photographic report that includes:
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Spray foam type and coverage
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Moisture and humidity readings
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Structural risks and defects
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Recommendations for removal or mitigation
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Lender-compliant formatting
We regularly work with buyers needing both a foam assessment and a pre-purchase survey before contracts are signed
When to Book a Spray Foam Insulation Survey
If you’re unsure whether now is the right time to arrange a spray foam insulation survey in London, here are the most common situations where homeowners, buyers, or sellers benefit from one:
You’re buying or selling a property
If the loft has spray foam insulation, a lender may delay or refuse financing unless a qualified survey is provided. Getting ahead of this ensures smoother negotiations and avoids last-minute surprises.
You’re applying for a mortgage or remortgage
Mortgage lenders across the UK are increasingly cautious with spray foam, and many request an independent survey before agreeing terms. We help ensure your property meets their inspection requirements.
You’ve noticed damp, mould, or poor ventilation in the loft
Trapped humidity could be a sign that the insulation is affecting airflow. In these cases, you might benefit from combining your foam survey with a condensation survey, especially if you're seeing black mould or condensation on ceilings.
Not sure which option is right? We’ll talk you through what to expect during your inspection and what type of report will be most useful for your situation.
Why Clients Choose Drysolve for Spray Foam Surveys in London
Unlike many firms, Drysolve does not sell or install insulation. This means our advice is always based on your property’s needs—not sales targets. We offer:
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Over 10 years’ experience with spray foam and structural diagnostics
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CSRT and CSSW qualifications, recognised by lenders
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100% independent, transparent reporting
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Local knowledge of the diverse property stock
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Lender and solicitor-ready documentation
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Our clients trust us for straightforward answers, especially when timelines and transactions are on the line.
Frequently asked questions
Address
30 Dukes Place
London
EC3A 7LP
Phone
07951 930704
