After spray foam removal: is there a 'removal certificate', and what should you get?

No; this guide found no official proof-of-removal document (claims we checked). None of the six Building Safety Regulator and DLUHC spray foam publications (March 2024 to December 2025) deals with removal or what happens if the foam is removed^[1]. The RICS consumer guide says nothing about lending after removal^[9]. One later-life lender's criteria for removed foam ask for a roof report and building control sign-off, not a "removal certificate"^[4].

What a removal firm hands over at the end is its own account of its own work. Keep it, but do not treat it as independent. In one ombudsman decision, the lender was entitled to doubt the independence of a report from a firm that went on to remove the foam and charge for it^[3].

The PCA's removal-contractor membership, announced on 27–28 August 2026 according to trade-press reports, is described as a benchmark and "not to regulate the market", with a consultation from September 2026^[7]. Before that, PCA members did not offer removal^[10]. Whoever removes the foam, the evidence below still matters. If the foam is still in place, start with do you need to remove spray foam?

Ask for these before the final payment, while the job is fresh:

• an itemised invoice with the address, dates, the roof areas treated and the method used;
• a written method statement;
• dated before-and-after photographs of each roof slope, the eaves and around any tank, flue or cables;
• how the waste was taken away, and by which registered waste carrier; GOV.UK guidance says construction waste moves through a registered carrier^[11];
• any moisture readings taken, with where each was taken;
• a note of anything found: damaged membrane or felt, broken battens or tiles, signs of past leaks;
• the reason given for removal, in writing.

Keep all of it with your original installation paperwork (spray foam paperwork).

These items matter because they are what was missing in real disputes. In one ombudsman decision there were no photographs, moisture readings or report from the removal firm, which gave no reason for removing the foam; the ombudsman said he would need photographs or expert evidence, which removal made unlikely to be available^[2]. In another, the ombudsman expected at least something from an independent source^[12].

Paperwork alone does not prove the work was done. Citizens Advice reports a homeowner who paid a trader to remove foam; a specialist surveyor later found none had been removed^[13]. See spray foam removal scams.

Four things: whether the foam and its residue have gone, the condition of the timbers, the condition of the underlay and roof covering, and whether the loft can ventilate again.

• Foam and residue. Look for foam left in the eaves, around the tank, behind cables and at the ridge. One lender's published conditions for removed foam include residue being cleared^[4].
• Timbers. With the foam gone, rafters and purlins can be seen and tested. The government's moisture modelling used 20% moisture content as the decay threshold for solid timber^[1]. A reading shows the timber on the day, not how long it was wet before.
• Underlay, battens and covering. RICS says removal could damage the structure the foam was applied to^[9]. The Energy Saving Trust says tiles or slates with no felt behind the foam are harder to replace, and that if the foam is removed the structure may need replacing^[8].
• Ventilation. Insulating a loft makes it colder and raises condensation risk, so vents, grilles and airbricks should not be blocked and extra ventilation may be needed^[14]. The case file Spray foam removed, but the loft still couldn't breathe shows why this is worth checking separately.

A sensible order is: clear the residue, inspect the timbers and underlay, get a written report, do any repairs, restore ventilation, then re-insulate. One later-life lender asks for a roof report by a structural engineer or chartered surveyor, completed repairs and building control sign-off^[4].

An independent check reports what can be seen and measured on the day. It cannot say what the roof was like before the foam came out.

One later-life lender publishes conditions, one lender publishes a refusal, and the other criteria found say nothing specific. These are published positions at the dates shown; they change, and none is a promise about any application.

Several large lenders told the BBC in November 2024 that they decide spray foam cases one by one, taking the valuer's report into account^[15]. Later-life lending is shown here for information only. The wider picture is on what lenders publish about spray foam.

An independent inspection is evidence for your own decision, for example whether to buy, sell, repair or renegotiate. It is not a report for a lender, and no one can promise what a lender will do.

At loft-floor level, once the timbers and ventilation have been checked. The Energy Saving Trust ranks mineral wool at joist level among the lowest-risk options, and says no insulation should go on a leaking roof until it is fixed^[8]. It also says rafter-level insulation is more expensive than insulating the loft floor^[14].

When the new insulation goes in, the Energy Saving Trust advises leaving a gap between insulation and any loft boards, not squashing mineral wool, and keeping vents clear^[14]. If any foam is left at rafter level, get advice before laying thick quilt beneath it: the government's modelling found that loft-floor insulation kept under rafter foam raised mould risk^[1].

Then get the replacement checked, as you would the removal:

• Is the product fitted the one on the contract, at the depth stated?
• Are the eaves open, and is the insulation clear of them?
• Is there paperwork for the new insulation: product, depth, installer and invoice?

If insulation is proposed at rafter level again, the questions in does spray foam cause condensation or rot? apply to that too.

Ask the seller, through your conveyancer, for everything in the removal-firm list above, plus any report on the roof after removal (step-by-step if the foam has been removed). If ventilation, residue or the condition of the timbers is not covered, an independent inspection before exchange can help fill the gap. Check what your lender publishes; at least one lists removed foam as unacceptable^[5]. See buying a house with spray foam.

Gather what still exists: the original contract, payment records, removal invoices, photographs and any readings. Ombudsman decisions have discounted reports or invoices from the firm that removed the foam, as not independent or as giving no reason for removal^[3][2]. These show how the ombudsman reasoned in those cases, not how yours will go. See Section 75 and the Financial Ombudsman.