Full cavity borescope survey
We inspect the cavity through a small hole before quoting, identify whether you have open cell or closed cell foam, and record the depth and coverage. You get the photographs whether or not you book the removal.
Licensed
Licensed & Bonded
Fully Insured
Insured & Bonded
24/7 Emergency
Same-Day Response
Warranty Backed
5+ Years Trusted in Sheffield
What's included in cavity foam removal
Every cavity wall spray foam removal job includes the full extraction, clean-up and documentation you need to satisfy a lender or buyer. There are a few optional extras if your cavity needs more than a straightforward clear-out.
Complete foam extraction
All injected foam is removed from the cavity using a spray foam removal tool, insulation vacuum and, where needed, a dry ice blasting machine. We work in sections and borescope each one to confirm it's clear.
Drill hole re-pointing
Every 22mm access hole is filled and re-pointed with colour-matched mortar. On stone or rendered walls we match the finish as closely as possible so the repair blends into the existing elevation.
Dust control and clean-down
Floors are sheeted, doorways sealed, and a dust extraction unit runs throughout. We clean interior surfaces and wash down exterior walls before leaving, and we remove all waste through licensed carriers.
Completion certificate and photo pack
You receive a signed completion certificate, borescope photographs of the empty cavity, and a written method statement. This is the documentation lenders, valuers and solicitors ask for during a sale.
5-year workmanship warranty
Our extraction work is covered by a 5-year workmanship warranty. If foam residue or a related issue shows up in that period, we return and put it right at no cost to you.
What cavity wall spray foam removal in Sheffield involves
Cavity wall spray foam removal in Sheffield is the controlled extraction of injected polyurethane foam from the cavity between your inner and outer walls. We drill small inspection holes, feed a specialist spray foam removal tool and insulation vacuum into the cavity, and pull the foam out in sections. We use dry ice blasting machine passes to freeze and crack stubborn closed cell foam, then clear the residue with a dust extraction unit. Every hole is re-pointed and matched to your existing brickwork.
Sheffield homes are hit hard by this problem. The city's mix of pre-1919 stone terraces and post-war brick semis was heavily targeted by insulation firms between 2010 and 2018, and much of that foam has now shrunk, cracked, or trapped moisture against the wall ties. Lenders including major high-street banks routinely refuse mortgages on affected properties, and homeowners in Walkley, Heeley and Woodseats are often told they cannot sell until the foam is gone.
How our cavity foam removal process works
Every job follows the same five stages, whether it's a two-bed terrace in Sharrow or a detached house in Fulwood. You'll know what's happening and when.
01
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
02
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
03
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
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Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools and methods we use
Tools & Equipment
Dry ice blasting machine
Freezes closed cell foam so it shrinks and releases from brick and wall ties without damaging the substrate. Our go-to method for stubborn foam and older stone walls.
Insulation vacuum
Pulls loose foam, dust and debris straight from the cavity into sealed bags. Keeps the site clean and means nothing ends up in your garden or your neighbour's.
Spray foam removal tool
A specialist cutting and grabbing head designed for cavity work. Reaches into the wall through 22mm holes and breaks foam into sections we can extract.
Reciprocating saw and oscillating multi-tool
Used where foam has bonded to wall ties, lintels or timber. Controlled cutting lets us free the foam without damaging the structure behind it.
Dust extraction unit
Runs throughout the job to capture airborne dust at source. Combined with sealed doorways and floor sheeting, it keeps the living space usable while we work.
PPE respirator and protective sheeting
Every technician wears a fitted respirator, and we sheet floors, furniture and exterior walls. Foam dust is unpleasant, and we treat it that way on every job.
Methods & Standards
Dry ice blasting
Dry ice pellets are fired at the foam surface, freezing it rapidly so it becomes brittle and releases its grip on brick and ties. No chemicals, no water, and no abrasive damage to the wall. It's the cleanest method for closed cell foam.
Sectional extraction with borescope verification
We divide the cavity into sections and extract one at a time, checking each with a borescope before moving on. This stops us missing pockets of foam behind ties or at corners, and gives you photographic proof the cavity is clear.
Sand blasting for heavy residue
Where foam has bonded across large surface areas, sand blasting media cleans the cavity face back to bare brick after extraction. We use it selectively and with full containment, because it's aggressive and not always needed.
Colour-matched re-pointing
Every access hole is filled and re-pointed with mortar matched to your existing wall. On stone or rendered properties we blend the repair as closely as possible so the elevation looks untouched from the street.
When to book cavity foam removal
01
A lender has refused a mortgage on a Sheffield property because a valuer flagged injected cavity foam.
What we do: We survey within 48 hours, quote the same day, and schedule removal around your buyer's deadline. We produce the completion certificate and photo pack that valuers accept, and we can speak directly to your solicitor if they need clarification.
→ Most buyers get their mortgage offer reinstated within two weeks of the final inspection, and the sale completes on the original timeline.
02
You've owned the house for years and noticed damp patches, blown plaster or a musty smell on internal walls.
What we do: We borescope the cavity to confirm whether foam is trapping moisture, then remove it and restore ventilation. We photograph the drying process and check the wall ties while we're in there.
→ Walls dry out over 6 to 12 weeks, damp patches stop spreading, and you avoid the much bigger cost of replacing plaster, skirting and joists.
03
You're selling and want to get ahead of a survey flag before your buyer's valuer visits.
What we do: We remove the foam, re-point the holes and issue the certificate before the survey takes place. Your estate agent can hand the documentation straight to the buyer's solicitor.
→ The survey comes back clean, the buyer has nothing to negotiate on, and the sale moves forward without a price reduction.
04
You've had pest problems in the loft or cavity and the foam is making them worse.
What we do: We remove the foam, clear the harbourage, and clean the cavity with an insulation vacuum. If treatment is needed, we'll advise before we close up so the pests don't return.
→ The scratching stops, droppings stop appearing, and the cavity is left clean, ventilated and ready for any future insulation you choose.
How cavity foam removal runs in Sheffield
Sheffield's housing stock makes cavity foam a bigger problem here than in many cities. The west of the city, from Crookes and Walkley through to Fulwood and Stannington, is dominated by pre-1919 stone terraces and semis with narrow, irregular cavities. Foam injected into those walls often shrinks away from the stone, leaving gaps that trap moisture and cause damp and condensation. To the east, in Gleadless, Manor and Darnall, the 1930s brick semis have wider cavities that were heavily targeted by insulation firms, and closed cell foam in those walls bonds hard to the ties. We adjust our method to suit: dry ice blasting for the bonded closed cell foam, gentler sectional extraction for stone. Sheffield's damp climate, with rain on roughly 150 days a year, means any foam that blocks ventilation shows up as damp quickly. We also work regularly with lenders on mortgage-driven removals, and we know what South Yorkshire valuers want to see in a completion pack. If you need cavity wall insulation extraction Sheffield South Yorkshire wide, we cover the whole city and can usually survey within 48 hours.
Neighborhoods We Serve
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Crookes and Walkley
Dense stone terraces with narrow cavities. Foam here tends to shrink and leave gaps, so we use gentler extraction and borescope every section to avoid cracking the stone.
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Gleadless and Manor
1930s brick semis with wide cavities and heavy closed cell foam. This is dry ice blasting territory, and the most common area we see mortgage-driven removals.
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Fulwood and Ranmoor
Larger detached and semi-detached homes, often with multiple cavity runs and loft foam as well. Jobs here typically run to 2 or 3 days on site.
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Stocksbridge and Deepcar
Exposed, higher-elevation properties where wind-driven rain makes trapped moisture worse. Removal here is often paired with a ventilation check on the roof space.
Local Conditions We Plan For
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High rainfall and exposed west-facing walls
Sheffield gets rain on around 150 days a year, and west-facing elevations take the worst of it. Foam that blocks the cavity traps that moisture against the inner leaf, which is why damp shows up faster here than in drier parts of the country.
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Pre-1919 stone construction with irregular cavities
Stone walls have uneven cavity widths and rough surfaces that foam grips differently. We slow the extraction down and use borescope checks more often to avoid damaging the stone or leaving residue behind.
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Post-war brick semis with wide cavities
These walls took the most injected foam between 2010 and 2018. The foam is usually closed cell and bonded hard to the ties, so dry ice blasting is often the fastest and safest route.
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Lender-driven deadlines on house sales
When a mortgage is on the line, timing matters. We prioritise these jobs, survey within 48 hours, and issue the completion certificate within 24 hours of finishing so your sale can move.
Mortgage refusal reversed in Crookes
Problems our Sheffield foam removal solves
Cavity foam causes a small number of very specific problems. If any of these sound familiar, removal is usually the only lasting fix.
Problem
Mortgage refused due to spray foam
Your sale stalls, your buyer walks, and you're back to viewings with a survey flag that follows the property. Most high-street lenders won't budge until the foam is gone and documented.
Our Fix
We remove the foam, re-point the walls, and issue a completion certificate with borescope photographs. That pack is what valuers accept. Most Sheffield customers see their mortgage offer reinstated within 5 to 10 working days of the final inspection.
Problem
Damp and condensation on internal walls
Closed cell foam traps moisture against the inner leaf. Plaster blows, skirting rots, and the damp smell spreads through the house. Left alone, it can reach timber lintels and floor joists.
Our Fix
We extract the foam and restore airflow through the cavity so the wall can dry naturally. Most properties dry out within 6 to 12 weeks. If there's existing damp damage, we'll tell you what needs a plasterer or joiner after we've finished.
Problem
Reduced property value and difficulty selling
A spray foam flag on a survey can knock thousands off an offer or kill a sale outright. Buyers see it as a risk they don't want to take on, even when the foam itself is harmless.
Our Fix
Once the cavity is clear and certified, the flag comes off the survey. We've seen Sheffield homes return to full asking price after removal, and buyers treat the property normally again once the paperwork is in place.
Problem
Pest infestation in insulation
Shrunk foam leaves gaps that mice and insects use as runs between the cavity and the living space. You hear scratching at night and find droppings in cupboards, and the problem keeps coming back.
Our Fix
We remove the foam and the harbourage with it, then vacuum and clean the cavity. If there's an active infestation, we can advise on treatment before we re-point and close up, so pests don't return to the same space.
Why Sheffield homeowners remove spray foam
Spray foam in a cavity is rarely a neutral thing. It either blocks ventilation, hides damp, or scares off a buyer. Removing it puts you back in control of the property.
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Unlock mortgage approval
Most high-street lenders will not lend against a property with injected cavity foam. We provide a full removal report with before-and-after photographs that your solicitor can pass straight to the valuer, which typically clears the mortgage refusal within 5 to 10 working days of the final inspection.
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Stop hidden damp damage
Closed cell foam traps water against the inner leaf and wall ties. Left alone, that moisture wicks into plaster, rots timber lintels, and lifts wallpaper. Removing the foam and restoring airflow through the cavity lets the wall dry naturally, usually within 6 to 12 weeks depending on the season.
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Restore property value
A spray foam flag on a survey can knock thousands off an offer, or kill a sale outright. Once the cavity is clear and we've issued our completion certificate, buyers and valuers treat the property normally again. We've seen Sheffield homes go back to full asking price after removal.
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End pest and condensation issues
Shrunk foam leaves gaps that mice and insects use as runs, and it blocks the ventilation your walls need. Clearing the cavity removes the harbourage and lets air move again. If you've had pest infestation in insulation, we can treat and clear it in the same visit.
Accredited, insured and warrantied
Licensed & Certified
- CHAS Accreditation — issued by CHAS
- Constructionline Registration — issued by Constructionline
- SafeContractor Approval — issued by SafeContractor
- City & Guilds Insulation Removal — issued by City & Guilds
- PASMA and CSCS Cards — issued by PASMA / CSCS
Verified Reviews
Google ★★★★★4.9
Surveyed on the Tuesday, quoted the same afternoon, foam out by Thursday. The certificate and photos arrived the next morning and our buyer's lender accepted them without question. Genuinely the least stressful part of our house sale.
Google ★★★★★5.0
We had damp on two walls for years and nobody could tell us why. They borescoped the cavity, showed us the foam, and removed it in a day. Walls dried out over the next couple of months. Should have called them years ago.
Checkatrade ★★★★★4.8
Clean, tidy and on time. They sheeted everything, kept the dust down with an extraction unit, and re-pointed the holes so well you can't see where they drilled. Fair price for the amount of work involved.
Google ★★★★★5.0
We manage several rental properties in Sheffield and use them for every foam removal now. Certificates are always ready quickly and the tenants have never complained about mess. Reliable team who know what lenders want.
Five years removing foam across South Yorkshire
Spray Foam Removal Sheffield has been trading since 2021, and in that time we've built our whole business around one problem: injected cavity foam that should never have been there. Our technicians hold City & Guilds insulation removal and NVQ in insulation removal qualifications, plus PASMA and CSCS cards for safe working at height and on site. We're CHAS accredited, Constructionline registered and SafeContractor approved, so we can work on residential, commercial and lender-driven jobs without paperwork delays. We've cleared foam from stone terraces, 1930s semis, new-builds and warehouse units across the city.
- City & Guilds insulation removal qualified technicians on every job
- CHAS accredited, Constructionline registered and SafeContractor approved
- 5 years of cavity foam extraction across Sheffield and South Yorkshire
- Full public liability insurance and a 5-year workmanship warranty
- Borescope photo evidence supplied for lenders, buyers and solicitors
Frequently Asked Questions
Real answers to the questions we hear most often from local homeowners and property managers.
How much does cavity wall spray foam removal cost in Sheffield?
Most Sheffield homes cost between 1800 and 4200 pounds, with the average 3-bed semi landing around 2600 pounds. Price depends on wall length, foam type (open cell is cheaper to remove than closed cell), and access. We give you a fixed written quote after a same-day survey, so there are no surprises.
Can you remove cavity wall spray foam in Sheffield South Yorkshire?
Yes, we cover the whole of Sheffield and South Yorkshire, including Crookes, Ecclesall, Hillsborough, Darnall and Stocksbridge. We extract open cell and closed cell foam, and we work with lenders who need documented removal before releasing a mortgage. Same-day surveys are usually available if you call before 2pm.
How long does cavity wall spray foam removal take in Sheffield?
A typical 3-bed semi takes 1 to 2 working days on site. Larger detached homes or heavy closed cell foam can run to 3 days. Add 24 hours for the completion certificate and photo pack. We'll confirm the exact schedule in your quote so you can plan around it.
Is cavity wall spray foam removal messy in Sheffield?
No, it's a controlled process. We seal doorways, sheet floors and use an insulation vacuum with a dust extraction unit, so debris goes straight into sealed bags. Exterior walls are protected with sheeting and we clean down afterwards. Most customers are surprised at how little disruption there is.
Related Services
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When a lender deadline or a house sale is pressing, we can often attend and start work the same day. Call before 2pm and we'll aim to survey and quote within hours, not days.
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Active damp, a collapsed foam section, or an urgent valuer visit can't always wait until Monday. Our 24/7 line on 03335672543 gets a technician to you for assessment and emergency containment.
View 24/7 Spray Foam RemovalResidential Spray Foam Removal
Most of our work is residential: terraces, semis and detached homes across Sheffield. We handle cavity, loft and attic foam, and we leave the property clean and documented for your buyer or lender.
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View loft spray foam removalContact our Sheffield team
Ring us on 03335672543 between 8am and 6pm Monday to Friday, or leave a message out of hours and we will call you back first thing. We answer the phone, give you a straight answer on price and timescales, and book your survey on the spot. Most Sheffield surveys happen within two working days.
Spray Foam Removal Sheffield
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Phone
03335672543 -
Address
30 Cambridge St, Sheffield City Centre, Sheffield S1 4HP, UK, Sheffield, South Yorkshire
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Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available