Asbestos cement and Sheffield’s industrial buildings
Sheffield’s industrial past left it with a deep stock of workshops, fabrication sheds and trading-estate units, and the post-war generation of those buildings was very often roofed in asbestos cement. The material suited the era: inexpensive, fireproof and fast to install across big spans. Half a century later, those same roofs are weathered, mossy and increasingly leaky, and their owners carry a legal duty to deal with them properly.
Properly does not automatically mean removal. Where the sheets remain sound, encapsulation, which means cleaning, repairing and sealing the existing roof under a specialist coating, is a recognised and far less disruptive way to manage the material in place.
Duty to manage, in plain terms
The Control of Asbestos Regulations 2012 require whoever controls a non-domestic building to identify asbestos-containing materials, assess and record their condition, and keep a written management plan. The law’s position on sound asbestos cement is pragmatic: leave it undisturbed, keep it in good condition, and monitor it. Removal is required by condition, not by the mere presence of the material.
For a Sheffield duty holder, that means an ageing but intact roof is a management problem with more than one solution, and the cheapest compliant solution is often to seal it rather than strip it.
How encapsulation extends a sound roof
Encapsulation attacks the actual risk, which is fibre release from a deteriorating surface. The process is deliberate and controlled:
- Survey first, so the recommendation rests on evidence
- Controlled cleaning to remove moss and contamination without damaging the sheets
- Repair of fixings, laps and flashings, with isolated sheet replacement where needed
- A coating system formulated for asbestos cement, sealing fibres in and weather out
- Documentation for your asbestos register and management plan
The result is a watertight, sealed roof that no longer sheds fibres or surface dust, typically delivered at a fraction of the cost of removal and re-sheeting, with the building in use throughout. Rooflights and gutters can usually be dealt with in the same programme, which is where many of these roofs actually leak.
When encapsulation would be the wrong call
This part matters, so we put it plainly. Encapsulation depends on the sheets having enough integrity left to be worth keeping. If a roof is friable, delaminating, soft or widely broken, no coating can make it safe, and applying one would just conceal continuing deterioration. Those roofs need removal by a licensed asbestos contractor and replacement. Our surveyors will tell you which side of the line your roof sits on, and if it is the wrong side we will recommend removal even though it is not the work we sell. Overstating what a coating can do helps nobody.
Survey-led, England-wide
We are based in the South East and carry out asbestos roof encapsulation across England, with Sheffield and South Yorkshire firmly within our working area. Every enquiry follows the same sequence: survey, written findings, honest recommendation, then a price. If you manage an industrial unit, workshop or farm building with an asbestos cement roof that is starting to show its age, arrange the survey before deterioration takes the encapsulation option off the table.
