Spray foam applied to the underside of a roof is assessed on the roof underneath it, not on the foam itself. This sets out what one consumer organisation reported about equity release lending, what the surveying standard actually says, and the inspection protocol that exists for exactly this situation.
This page starts with the part most sites leave until after you have filled in a form. If you have spray foam in your roof and you were hoping to release equity, read the next section before you do anything else.
Equity release may involve a lifetime mortgage, secured against your property, or a home reversion plan. It will reduce the value of your estate and impact funding long-term care.
“Currently there are no equity release lenders that will lend on a property if you have had spray foam roof insulation installed after the property was built.”
HomeOwners Alliance, opened 6 September 2026
That is what one consumer organisation reported on the day we checked. It is not our finding, it is not a rule, and it is not permanent: lender criteria change, and the only person who can tell you where the market stands for your property today is an adviser with access to all of it.
On ordinary mortgages the position is less absolute. The same page cites BBC research that a quarter of the largest lenders will not lend on a home with spray foam in the roof, and names lenders on both sides of that line.
Both turn on the foam having been part of the building rather than added to it later. If yours went in during construction and you can show that, you are in a different conversation from most readers of this page.
“Sprayfoam insulation in loft” — Declined
Legal & General, opened 6 September 2026. Listed among their declined property features, in their published lifetime mortgage lending criteria. One provider's position on one date, and the only lender-published decline we have opened ourselves.
RICS does not call spray foam a defect. It treats it as a serious modification whose suitability depends on the property, the roof underneath it, how it was installed and what can be shown about all three.
That is the question underneath all of it. Foam sprayed onto the underside of a roof covers the timbers, so a surveyor cannot see the thing they most need to see, and if moisture is trapped against them it is not visible either. The assessment is about the roof, not about the foam.
The traditional arrangement. Insulation sits at ceiling level and the roof space above it is ventilated, so air moves through and moisture that gets in can get out again.
What spray foam creates. Applied to the underside of the roof, it seals the space and brings it inside the insulated envelope, which means condensation has to be controlled by design rather than by ventilation.
“The presence of spray foam insulation is a factor that could affect a surveyor's professional opinion of value.”
Could affect, on a professional opinion. Not will reduce, and not by any published amount. Nobody can put a figure on this from a description, and anybody who offers you one has invented it.
The Sprayed Foam Insulation Inspection Protocol was published in March 2023 by the Property Care Association and the Residential Property Surveyors Association, with lenders and surveyors. It gives a surveyor a structured way to assess a roof with foam in it and reach a recommendation, instead of each one deciding for themselves.
The PCA runs a membership category for spray foam assessors: surveyors it has vetted and audits. That register is how a homeowner finds somebody whose report a lender is likely to accept, rather than paying for one that is then ignored.
The Property Care Association calls removal “a complex and expensive process”. It is worth finding out where you stand before treating it as the obvious next step.
Equity release may involve a lifetime mortgage, secured against your property, or a home reversion plan. It will reduce the value of your estate and impact funding long-term care.
Whether your property would be accepted. What it is worth with the foam in place. Whether removing it would change any lender’s answer. Whether you should remove it at all. We are not advisers, we have not seen your roof, and a page cannot make a lending decision about a house it has never been to.
RICS puts it plainly: “It is essential that appropriate records and photographs are taken of your home before, during and after works are completed.” Most people reading this had the work done years ago and were never told that, so gather what you can and do not worry about the gaps.
RICS also says to “check with your mortgage provider whether their lender policy allows the installation of such products”. That advice is written for somebody about to have it installed. If it is already up there, the equivalent is an assessor’s report rather than a phone call.
Take these to an adviser, a spray foam assessor or a surveyor. Every one of them is a question we are not allowed to answer for you.
Is this foam open cell or closed cell, and was my roof suitable for it?
The two behave differently against moisture. An installer or an assessor can tell from an inspection; a page cannot tell from a description.
Would an inspection under the PCA protocol help my case, and what would it cost?
Ask before commissioning one. A report from an assessor on the register carries weight that a general survey may not.
Which providers, if any, would consider my property as it stands?
This is the question for an adviser with access to the whole market, and it is the one we are not allowed to answer.
If removal is raised, what exactly would it involve and what would be left?
The PCA calls removal complex and expensive. Ask what condition the roof would be in afterwards and what further work that implies, before agreeing to anything.
If I am told no, is that this product, this lender, or every lender?
Get the reason in writing. It is what any other provider, and any adviser, would start from.
Short answers to the things that come up most. None of it is advice, and every figure on this page carries its source.
RICS does not call it one. It treats it as a serious modification whose suitability depends on the property, the roof underneath it, how it was installed and what can be shown afterwards.
RICS says the presence of spray foam insulation is a factor that could affect a surveyor professional opinion of value. Foam sprayed onto the underside of a roof covers the timbers, so a surveyor cannot see the thing they most need to see.
RICS says it is essential that appropriate records and photographs are taken of your home before, during and after works are completed. If you have those, the conversation starts from evidence rather than from a guess.
That is not a question this site can answer, and removal is expensive and can cause its own damage. RICS advice is to check with your mortgage provider whether their lender policy allows the installation of such products, which is the order most people do it in the wrong way round.
Equity release may involve a lifetime mortgage, secured against your property, or a home reversion plan. It will reduce the value of your estate and impact funding long-term care.
One qualified equity release adviser. They will go through your figures and tell you if there is a better answer. It costs nothing and commits you to nothing.
Google Analytics, Microsoft Clarity and Vimeo. Say no and none of them loads. What each one stores, and what Microsoft use theirs for.