What actually happens during a sale when foam is found
The foam is rarely spotted by the buyer. It is usually picked up by the buyer's surveyor, who notes its presence and recommends further investigation by a specialist.
That note lands with the buyer's solicitor and, if there is a mortgage, with the lender. From that point the sale waits on paperwork rather than on people.
What follows is predictable. The buyer asks what type of foam it is, when it was fitted, who fitted it, and what condition the roof timbers are in. Very few sellers can answer any of those questions.
Silence is where sales stall. Not because the foam has been judged defective, but because nobody has produced evidence either way.
Disclosure, the property information form and your agent
Sellers complete a property information form as part of the conveyancing process. Answers given on it must not be false or misleading, and the alterations and works questions are where foam commonly becomes relevant.
Estate agents sit under a separate expectation. Under consumer protection rules, material information about a property — information a buyer would need to make a decision — is expected to be disclosed rather than withheld until a survey turns it up.
In practice this means the foam will come out. The choice available to a seller is whether it comes out on their terms, with documentation, or on the surveyor's terms, without.
This page is general information, not legal or conveyancing advice. Your conveyancer should advise you on your disclosure obligations and how to complete the property information form for your sale.
Why finding out before marketing beats finding out mid-sale
Before marketing, information is neutral. You have time, no buyer waiting, and no deadline forcing a decision.
Mid-sale, the same information arrives as a problem attached to a chain. Every week of delay increases the chance the buyer walks or reduces their offer.
- Before marketing: you choose whether to act, price accordingly, or do nothing.
- Mid-sale: the buyer sets the agenda and the timetable.
- Before marketing: quotes for any work can be obtained calmly and compared.
- Mid-sale: the first quote received tends to become the number under negotiation.
What a seller can do proactively
Gather the paperwork first. The original contract, the installer's name, any guarantee document and the year of installation answer several buyer questions at no cost.
If you are not certain the loft contains spray foam at all, start with identifying what is in the loft. Identification is the prior step to everything else on this page.
Then get the condition documented independently, before the buyer's surveyor does it for you. An independent record of foam type, timber condition, ventilation and moisture readings answers the questions that would otherwise stall the transaction.
Resist the urge to commission removal pre-emptively. Whether removal is warranted is a separate question, covered in should I remove spray foam insulation.
What no inspection can do for a sale
An inspection documents facts about a roof void. It does not commit a lender to lend, direct a surveyor's opinion, or promise that a particular buyer will proceed.
Anyone telling a seller that a report will make a sale go through is telling them something they cannot know. What evidence does is remove uncertainty as a bargaining chip.
If you are the buyer
The same transaction looks entirely different from the other side of it. If you are considering a purchase rather than a sale, read should I buy a house with spray foam insulation.
Where to start
Reports are delivered within 48–72 hours of the visit as standard, with a 48-hour turnaround available for an additional £50. Inspections carried out in line with PCA guidance.
Before you market
Pre-Sale Loft Inspection
£275 fixed — the loft documented ahead of buyer and surveyor questions.
Pre-Sale Loft Inspection — £275Foam already queried
Spray Foam Inspection
£295 fixed — foam type, timber condition and calibrated moisture readings.
Spray Foam Inspection — £295