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Selling property

Can you sell a house with spray foam insulation?

By Summit Land & Development5 min read
The short answer

Yes, but spray foam insulation on the underside of a roof can make it hard for buyers to get a mortgage, because lenders and surveyors worry it may hide or cause timber decay and condensation. You can get a specialist inspection to show the roof is sound, have the foam removed and the roof repaired, or sell to a cash buyer who isn't relying on a lender.

Firs Glen Road, Talbot Park: bought with foam insulation to remove (a Summit project)

Why spray foam causes problems

Spray foam was sold to many homeowners as a quick way to insulate a loft or hold old roof tiles in place. Applied to the underside of the roof, it can trap moisture against the timbers and stop surveyors seeing their condition. If the roof can't be inspected, a lender's valuer often can't confirm it's sound, and the lender may decline to lend or ask for more reports.

Not all foam is the same, and not every installation causes damage. But because the condition is hard to see, many lenders take a cautious line, and that's what stalls sales.

Your options

OptionWhat it involvesGood for
Specialist inspectionA surveyor assesses the type of foam and the timbers, sometimes taking samplesShowing a buyer's lender the roof is sound
Removal and repairFoam stripped out, timbers checked and repaired, roof ventilated, insulation replacedRestoring a normal sale; costs vary with roof size and condition
Sell as it isSell to a buyer who doesn't need a mortgageSpeed and certainty, especially if other work is needed too
Worth knowing

Keep any paperwork from the installer: the product, the date and any guarantee. Buyers' surveyors will ask, and it can make the difference between a lender saying yes or no.

You need to declare it

If you know there's spray foam in the roof, tell your solicitor and agent at the start. Estate agents mustn't leave out material information that buyers need, and a buyer's surveyor will find it anyway. Being upfront avoids a sale collapsing at the mortgage valuation, weeks in.

Source: Material information guidance (National Trading Standards)

Removal or sale: how to decide

Get a quote for removal and any likely repairs, and ask an agent what the house would sell for afterwards. Compare that, after the cost and time involved, with what you'd get selling as it is. If the house needs other work too, or you need to move soon, selling as it is often wins.

A local example

At Firs Glen Road in Talbot Park, the seller wanted a straightforward, no-hassle sale of a house that needed refurbishment and had foam insulation to remove. We exchanged without carrying out any surveys, delayed completion to suit the seller, then carried out significant remedial works ourselves before reselling it.

Why sales stall at the mortgage valuation

Most sales with spray foam don't fail at the viewing. They fail weeks later, when the buyer's lender sends a valuer, the valuer can't see the roof timbers, and the lender asks for a specialist report or declines to lend. By then you may have agreed a moving date and the buyer may have spent money on searches.

Telling buyers at the start, and having an inspection report ready, avoids that late surprise.

Removal: what's involved

  1. Inspection to identify the type of foam and check the timbers.
  2. Removal of the foam, usually by hand, with waste disposed of properly.
  3. Repairs to any timbers that have decayed.
  4. Ventilation and new, breathable insulation fitted correctly.
  5. A report confirming the work, which you can give to buyers and lenders.

Costs and timescales depend on the size and condition of the roof, so get a specific quote. Keep every report and invoice: they're what a buyer's lender will ask for.

Worth knowing

If your house needs other work too, such as a new kitchen, rewiring or damp treatment, selling as it is may be simpler than fixing the roof first. See selling a house that needs work.

Questions buyers and lenders ask

  • When was the foam installed, and by whom?
  • What type of foam is it, open-cell or closed-cell?
  • Is there an installer's guarantee, and is the company still trading?
  • Has the roof been inspected since, and are the timbers sound?
  • Is the loft ventilated?

Collect whatever you can answer before you list the house. If you can't answer most of them, a specialist inspection is the best investment you can make before selling.

Selling to us

We buy houses with spray foam across Bournemouth, Poole and Christchurch, with our own funds, so there's no lender's valuation to pass. We price in the cost of removal and any repairs, explain our figure, and can exchange quickly or wait until you're ready to move.

Disclosure and the property information form

The forms your solicitor sends to buyers ask about the property's condition, alterations and any problems you know about. If you know there's spray foam in the roof, say so and give whatever details you have. Estate agents also have to include material information in listings that buyers need to make a decision. Being clear at the start protects you after the sale, as well as making it more likely to go through.

Source: Material information guidance (National Trading Standards)

What to do next

If your sale has stalled because of spray foam, or you'd rather not deal with it, we can buy your house as it is with our own funds. Read about selling a property that needs work or what to do when a sale falls through.

Questions we're often asked

Will a buyer get a mortgage on a house with spray foam?

Some lenders will, often with a specialist report showing the roof is sound. Others won't. It depends on the lender and the installation.

Do I have to tell buyers about spray foam?

Yes, if you know about it. A buyer's surveyor will usually spot it, and hiding it can lead to the sale collapsing or a claim later.

Does removing spray foam fix the problem?

Removal lets the timbers be inspected and repaired. A roof that's been checked and properly insulated should be acceptable to most lenders.

Can you buy a house with spray foam without a survey?

We have. We assess the property ourselves and price in the work, so a lender's survey isn't needed.

Will removing the foam make my house sellable to mortgage buyers?

Usually, once the roof has been inspected, any timbers repaired and a report produced that lenders can rely on.

Selling propertyGet a cash offer, on your timetable

We buy houses and flats across Bournemouth, Poole and Christchurch in any condition, with our own funds. No chain, no mortgage.

Sources

Rules and timings change. We check our articles regularly; always confirm current guidance for your own situation.

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