Part of the glazing has turned milky and nothing will shift it. The effect resembles frosting, confined to a patch rather than covering the panel. If somebody has already taken a blade to it, there is scoring on top of what was there before.
This is acid etched graffiti. Gel has sat on the panel long enough to corrode it, and what remains is a surface broken up at a scale small enough to throw light in all directions rather than let it through cleanly. There is no deposit to wash away. The damage is the glass.
The panel is treated exactly where it sits, usually finished within the day, without screening and without waiting on a manufactured unit, for a small fraction of what replacing it would cost.
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Glass Overhead Is The Hardest Place To Hide Damage
Spitalfields has a great deal of glazing that is not in a wall. Market canopies, roof lights, covered walkway glazing and the glass above the trading floor, all of it sitting overhead with people underneath it. That changes the problem in a way most contractors have never had to think about.
You are looking through it at the sky. This is the part nobody expects. Etched glass at eye level is seen against a shopfront interior or a street, which is a relatively forgiving background. Etched glass overhead is seen against bright sky, which is the highest contrast and the worst possible viewing condition. A mark that would be barely noticeable in a window is glaring in a canopy, and it is visible to every single person walking underneath it rather than only to those looking in a particular direction.
Everybody sees it, all day. A damaged shopfront is seen by people passing one unit. Damaged canopy glazing is seen by everyone on the floor beneath it, continuously, for as long as it is there.
Access is over an occupied space. Working at height above a trading floor is not something to improvise. It means the floor below is closed or isolated, proper access equipment, and containment built so that nothing at all falls or drips onto the space underneath. That is a planned attendance outside trading hours, not a quick visit.
And replacement is far worse. Removing and refitting an overhead panel means craning or manhandling glass above a public area, with everything that implies for programme, cost and risk. Restoration is done in place with the panel staying exactly where it is.
If you manage a covered area here, it is worth looking up deliberately every so often. Overhead glazing is the last thing anybody inspects and the first thing every visitor sees.
Recent Acid Etched Graffiti Removal Projects
Two Trades, Two Peaks, One Frontage
The second Spitalfields particular is commercial rhythm, and it is genuinely unusual.
This district trades to two entirely different populations on different days. Monday to Friday it serves the City offices immediately to the west, busy at lunchtime and after work, dead by mid evening. At weekends it serves visitors, and the market and the streets around it fill for two full days while the offices are empty.
The practical consequence is that there is no single moment when a frontage matters most, and no single quiet period either. A unit here has to look right for Friday lunchtime and for Sunday afternoon, which are separated by a Saturday morning that is already busy.
The genuine working window is weekday early morning, before the office trade starts, or weekday evening once it has gone. We plan to those rather than assuming a retail pattern, and for the covered areas we work to the market's own operating hours rather than the street's.
Where We Get Called Out Around Spitalfields
The market and its canopies. Covered trading areas, roof lights and walkway glazing, with the overhead access position described above.
Brushfield Street. Restaurants, bars and retail facing the market, busy across both the weekday and weekend patterns.
Commercial Street. A heavily trafficked route with mixed commercial frontage, exposed after dark and carrying constant through movement.
Bishopsgate and the Norton Folgate edge. Larger office frontages and newer development at the City boundary, with specified glazing at ground floor.
Artillery Lane and Artillery Passage. Narrow pedestrian routes with small historic frontages, reached on foot and overlooked by very little.
Elder Street and Folgate Street. Protected Georgian stock now largely in office and studio use, with entrance glazing and railings.
Crispin Street and the streets behind the market. Service frontages and rear elevations where damage regularly goes unnoticed for days.
Working At Height Without Closing The Whole Place
Because overhead glazing is the distinctive problem here, it is worth being specific about how it is dealt with rather than leaving it as a claim.
Access equipment appropriate to the span. Tower, podium or mobile platform depending on the height and the floor loading beneath, agreed with the operator before attendance rather than turned up with.
The area below isolated, not the whole site. In most covered areas it is possible to close a bay or a section rather than the entire floor, which keeps the rest trading. We plan the sequence so the isolation moves with us.
Full containment beneath the work. Nothing drips, nothing falls. The slurry from an abrasive process on an overhead panel has to be caught rather than managed, and the floor finish below is protected as a matter of course.
Method statements and risk assessments in advance. Working at height above a public area is exactly the situation where an operator needs the paperwork before they will let anybody on site, and rightly.
Protected Fabric And Historic Frontages
Spitalfields holds a significant quantity of protected building stock, and a good deal of the commercial frontage sits within it.
Where a building carries a listing, altering it can require consent, and carrying out that work without consent is an offence rather than an administrative matter. Here the protection frequently extends to joinery, glazing bars and openings as much as to the elevation.
The older frontages are painted timber with glass bedded in putty and beads, so replacing a pane disturbs beads, putty and paintwork, bringing a decorator in alongside a glazier and leaving the elevation patched until it is redecorated.
Restoration disturbs none of it. The pane stays in its rebate, the putty and beads are untouched, the paint is unmarked and no application arises.
Replacing Or Restoring
| Fitting a new panel | Restoring the existing panel | |
|---|---|---|
| Overhead glazing | Craning or manhandling glass above an occupied floor | Treated in place, panel never moves |
| Disruption below | The floor closed for the duration of the works | A bay isolated, the rest trading |
| Protected and listed fabric | Consent may be required | Nothing altered, nothing to apply for |
| Painted timber frontages | Beads, putty and paintwork disturbed | Joinery and paint untouched |
| Timescale | Weeks once consent, glazing and access are arranged | Usually a single planned attendance |
| Meanwhile | A screened canopy bay over a trading floor | Nothing covered at any stage |
| Cost | The panel, the access, the installation and the closure | Up to 90 per cent less |
The cost comparison is set out at glass replacement vs protection: the true cost, and the decision at should I replace or restore etched graffiti glass.
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Telling The Three Apart
Three kinds of damage look similar and each takes a different route.
Paint or marker is a deposit on the panel. Opaque, sharply bounded, and your fingernail climbs onto it. The right solvent takes it away and leaves the glass intact.
Acid etching is within the surface. Milky and pale while still letting light through, with a faint coarseness sitting level with the glass around it. There is no clean boundary to it, because the gel kept travelling until somebody intervened. Overhead, against the sky, it reads far more strongly than the same damage would in a window.
Scratching is a mechanical cut. Bright rigid lines from a blade, a stone or a key, that a fingernail will drop into.
Hold yours up against the pictures at glass scratching vs acid etching, and there is more on the clouded look at white frosty window graffiti. There is background on how common this has become in the rise of acid-etch vandalism in London.
The First Hour
Any gel still present remains corrosive. It burns skin and eyes. Nobody handles it, and where the damage is overhead the area beneath needs clearing rather than a warning being passed round, because residue can drip.
Nothing sharp, nothing abrasive. Take a blade to it and you put permanent lines into a panel that could have been fully recovered, and running a cloth over wet gel moves the problem onto neighbouring panels.
Proprietary removers will not help. There is nothing sitting on the surface for them to dissolve, and on painted joinery or coated glazing they add a problem you did not have.
Rinse with plenty of clean cold water where residue is visible and it is safe to reach, gloved and with eye protection, letting it run off rather than wiping it across the surface. Overhead, that is a job for us rather than for your team.
Photograph everything affected, dated, and for overhead glazing take the shot from directly underneath looking up through it at the sky. That is the view everybody else has and it shows the true extent.
Report it as criminal damage. The reference will be wanted before an insurer engages. We have listed the actions in order at what to do when your shop window is vandalised.
How The Work Is Carried Out
Establishing the panel. Float, toughened, laminated, wired, coated or a sealed unit, and how far the acid has travelled. Overhead glazing is frequently laminated or toughened for obvious reasons, and that is confirmed rather than assumed.
Access and isolation agreed first. The equipment, the working window and the extent of the area closed beneath are settled with the operator before the date is fixed.
A concealed trial. The method is proved on a small section out of view before the full panel is taken on.
Masking and containment. Frames, glazing bars, seals, gaskets and any signage are protected, and beneath overhead work the containment catches everything so nothing reaches the floor below.
Through the abrasive grades. Each stage finer than the last, removing a thickness of glass the eye cannot register, and taking the treated zone well beyond the mark so it disappears rather than ending at a line. Restrict it to the tag and a shallow lens is left in the panel, and overhead, viewed against the sky, that distortion is more obvious than it would be anywhere else.
Cerium oxide to finish. The remaining haze is polished out wet with cerium oxide, judged with light passing through the panel rather than reflecting from it.
Checked from underneath. Overhead glazing is signed off from the floor below, looking up through it at the sky, because that is how it will be seen by everybody from the moment the area reopens.
A single panel is normally complete within three hours, with access setup added on overhead work. The grinding stage is documented at acid etched graffiti techniques and removal methods, the polishing at how to polish shopfront glass to optical clarity, and the compound at how to use cerium oxide glass polish.
If the panel cannot be saved you hear it at the assessment. A burn of exceptional depth, a unit whose seal had already failed, or a coating occupying the surface we must abrade each mean it genuinely needs replacing, and that conclusion is issued in writing before any commitment.
Work Completed Nearby
- Acid etched graffiti removal from glass in Shoreditch
- Acid etched graffiti removal in Hackney
- Emergency acid etched graffiti removal in Dalston
- Acid etched graffiti removal in Farringdon
What We Restore Around Spitalfields
- Canopy, roof light and walkway glazing overhead, worked from proper access with the floor beneath protected.
- Toughened glass in canopies, entrance doors, atrium screens and balustrades.
- Laminated shopfront and lobby glazing across market units and office ground floors.
- Float and older window glass in the Georgian frontages and upper storey glazing.
- Sealed units in newer elevations, treated from the outer face alone.
- Mirrors and mirrored panels in restaurants, bars and unit interiors.
- Obscured and patterned glass, rebuilt to its original texture instead of being cleared.
- Glass block in older elevations, lightwells and service areas.
- Steps, thresholds and stall risers in polished granite or polished marble.
- Polished and brushed metal on canopy framing, handrails, door furniture and entry panels.
Nothing with a finished surface escapes the same gel, and on a canopy the framing between panels is marked as readily as the glass. All of it is dealt with in the same attendance.
Who We Work For In Spitalfields
Market and estate operators. Canopy and covered area glazing, with access, isolation and paperwork agreed before attendance.
Restaurants and bars facing the market. Frontages worked around a trading pattern that runs across both the weekday and weekend peaks.
Office and building managers at the City edge. Ground floor and lobby glazing restored outside core hours.
Independent traders and unit operators. Small frontages where the window is effectively the shop.
Managing agents of protected stock. Georgian frontages where restoration avoids the consent question a replacement would raise.
Who Carries The Cost
Canopy and covered area glazing almost always sits with the operator or the landlord rather than with any unit beneath it, because it is structure rather than demise. That is worth knowing if you trade under it, because reporting it is your part and paying for it generally is not.
On a leased unit the repairing covenant decides in the usual way, with the shopfront normally inside the demise and the communal entrance, lobby and envelope outside it. On converted Georgian stock the boundary is rarely obvious, so read the demise plan alongside the wording.
On insurance, weigh our figure against the excess before notifying anyone. One restored panel will commonly fall beneath it, and a claim that pays nothing still shows at renewal. Overhead glazing across several bays, where access forms part of the cost, usually justifies a claim. Dated photographs and a written works description come with the job in every case.
Reducing The Chance Of A Repeat
Restoring the panel deals with what has happened and nothing more. It deters nobody, and a district this busy at weekends and this empty on weekday nights gives plenty of opportunity.
Protective film is fitted over the outside face for one reason: so the film takes the next attack and the panel does not. Peeling it away and fitting a replacement is quick and costs a fraction of restoring the glass again. On overhead glazing that argument is stronger than anywhere, since access drives the price of a canopy restoration as much as the work does, and a film swap calls for that access far less frequently. Coated glazing needs the product matched so nothing dulls, and on listed fabric the specification is worth putting to the local authority beforehand.
It is set out in full at anti-acid etched graffiti protection, which goes into how a layer meant to be ruined does the job, the working life you should expect, what fitting it comes to and any change to appearance. For unit and shop windows see protecting retail displays from glass vandalism.
Areas We Cover Next To Spitalfields
The whole service, with our process video and the full question set, is on the main acid etched graffiti removal page.
Spitalfields Acid Etched Graffiti Removal: Frequently Asked Questions
The damage is in the canopy glazing above the trading floor. Can you treat that?
Yes, in place. The panel stays exactly where it is and we work from proper access above the floor, with the area beneath isolated and fully contained. Removing and refitting an overhead panel is a considerably bigger operation than restoring one.
Do you have to close the whole floor?
Usually not. In most covered areas a bay or section can be isolated while the rest keeps trading, and we plan the sequence so the isolation moves with us rather than shutting everything at once.
Why does it look so much worse than damage in a window?
Because you are looking through it at the sky. That is the highest contrast background there is, so a mark that would barely register in a shopfront is glaring in a canopy, and everybody underneath sees it rather than only the people facing it.
How should we photograph it?
From directly underneath, looking up through the panel at the sky. That is the view your visitors have and it shows the true extent, which a photograph taken at an angle will not.
Who pays for canopy glazing?
Almost always the operator or the landlord, because it is structure rather than part of any unit's demise. If you trade underneath it, reporting it is your part and paying for it generally is not.
What paperwork do you provide before working at height?
Method statements and risk assessments in advance, with the access equipment, the working window and the extent of the isolation agreed with the operator before a date is fixed. On a public area that is exactly as it should be.
When can you attend?
Outside trading, which here means weekday early morning or weekday evening. This district is busy at weekends and at weekday lunchtimes, so the quiet window is narrower than people assume.
Can the pane be restored or does it need replacing?
Restored, in the great majority of cases. The acid reaches only a fraction of a millimetre in, and the work takes that fraction off across the whole affected area and polishes it back to clear. A new panel becomes necessary only where the burn is exceptionally deep, the seal has already gone, or a coating lies directly across the area we must abrade.
Our frontage is a listed Georgian building.
That argues for restoring. Consent can be required to alter a listed building and the protection frequently covers joinery and openings as much as the elevation, whereas restoration leaves the fabric exactly as it was.
Do we need to board up?
No. Nothing leaves the frame at any point, whether overhead or at street level.
Will the treated area be visible?
It should not be. The work runs well past the damage and fades out, leaving no boundary. Restricting it to the tag leaves a shallow lens in the panel, and overhead against the sky that is more obvious than it would be anywhere else.
There is scratching as well as etching.
Both in one attendance, because the same graded abrasion and the same polish handles each. Depth is the only real constraint.
What about the canopy framing?
Marked as readily as the glass, and recoverable. Metalwork is dealt with in the same visit rather than left for somebody else.
Is protective film worth it on a canopy?
More so than almost anywhere. The cost of restoring overhead glazing is driven by access as much as by the work, and replacing a film needs that same access far less often. It is one of the clearest cases for fitting it.
What does it cost?
Against replacement, counting the panel, the access, the installation and the closure beneath, restoration comes in up to 90 per cent below. The figure depends on the number of panels, the extent and depth, the glazing type and the access arrangements. It is confirmed in writing beforehand. No lazy contractors. No hidden fees.
How do we start?
Send photographs, including one taken from underneath for any overhead glazing, and tell us the operating hours of the area involved. Those two things let us price the work and propose an access plan rather than turning up and negotiating one.
Do you need graffiti removed from your property? Get a fast, hassle-free quote today! Click here to get a professional graffiti removal quote or call us today on: 020 8050 5997
Other London Locations We Cover
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