Selling or buying a house with spray foam
The foam doesn’t have to kill the sale. What kills sales is finding out late, with no paperwork and no plan.
Selling a house with spray foam: get ahead of the survey
Your buyer’s lender decides whether the sale goes through. The earlier you know what it will want, the less leverage anyone has over you.
Find your paperwork
The installer’s invoice, any guarantee or certificate, and the name of the foam product. If the installer has gone, write down what you know: when, who, roughly what it cost.
Get a report early
A £300–600 assessment on the foam and timber gives a buyer’s lender something to look at. Without one, the valuer can only flag it. How the report route works »
Tell your estate agent
A buyer who finds out at survey stage feels misled and renegotiates hard. One who knows from the start has already priced it in.
Price up removal, even if you don’t do it
Two itemised quotes tell you, and your buyer, what the problem is worth. It stops a buyer knocking £20,000 off for a £6,000 job. What removal costs »
Decide: report, remove, or adjust the price
Removing it yourself costs more up front but widens the pool of buyers and lenders. Which is right depends on your timing and the market where you live.
Should you buy a house with spray foam insulation?
The survey flagged it. Don’t pull out yet, and don’t commit yet. Find out three things first.
Will your lender lend on it?
Ask your broker or lender directly, in writing. If they want a report or removal first, you need to know before you spend more on fees. What to ask your lender »
What paperwork does the seller have?
Installer details, a certificate, a report. No paperwork at all is a reason to be cautious, not necessarily to walk away.
What would removal cost?
Get it priced, including timber repairs and re-insulation. That figure is what you negotiate with, not the scariest number you’ve read online.
Ask the seller to sort it before completion, or take the full cost of removal plus extras off the price. Get either agreement in writing through your solicitor.
Already own it and your deal is ending?
Your current lender may treat a remortgage like a new loan and ask about the roof. Ask before your fixed rate ends, not the month it does, so a report or removal has time to happen.
Selling and buying with spray foam: common questions
Do I have to tell buyers about spray foam?
If you know it’s there, don’t hide it. Ask your solicitor how to answer the property information forms. A buyer’s survey will usually find it anyway, and finding out late is what makes buyers walk.
Will spray foam lower my house price?
It can, mainly because it shrinks the number of buyers who can get a mortgage. Having a report or itemised removal quotes ready limits how much a buyer can knock off.
Can I sell to a cash buyer instead?
Yes, and cash buyers don’t need a lender’s approval. Quick-sale firms usually offer well below market value, so compare that discount with the cost of a report or removal first.
Who should pay for removal, the buyer or the seller?
It’s a negotiation. Usually either the seller removes it before completion, or the price drops by the cost of removal plus extras. Get whatever you agree in writing through your solicitors.
Short on time before completion?
Tell me your postcode, your completion date and what the survey said. I’ll put you in touch with checked firms that cover your area, and an assessor if a report might be enough.