Solar Options for Asbestos Cement Roofs
Solar panel options for UK farm buildings with asbestos cement roofs. Overcladding solutions, ground-mount alternatives, legal requirements. Free asbestos assessment.
Thousands of UK farm buildings have asbestos cement roofs installed before the 2000 ban. While you cannot mount solar panels directly onto asbestos, overcladding and ground-mount solutions make solar entirely achievable, often improving the building at the same time.
£40-70/m²
Overcladding Cost
5-7 Years
Combined Payback
Free
Assessment
Important Legal Notice
Under the Control of Asbestos Regulations 2012, it is illegal to drill, cut, abrade, or otherwise disturb asbestos cement roofing materials. Any work that might release asbestos fibres must be carried out by a licensed asbestos contractor. Solar panels must never be fixed directly to asbestos cement sheets. All solutions on this page comply fully with UK asbestos regulations.
Two Proven Solutions for Asbestos Roofs
Both approaches avoid disturbing asbestos while enabling full solar installation on your farm building.
Option 1: Overcladding
Install new profiled steel sheeting over the existing asbestos roof, then mount solar panels on the new surface. The asbestos remains undisturbed and permanently encapsulated.
Option 2: Ground Mount
Install solar panels on ground-mounted frames on adjacent agricultural land. No interaction with the asbestos roof whatsoever. Can be combined with grazing (sheep under panels).
How to Identify Asbestos Cement Roofing
Not all grey corrugated sheets contain asbestos. Here are the key indicators, though laboratory testing is the only way to confirm.
Do not attempt to sample or test roofing materials yourself. Our surveyors are trained to safely collect samples under controlled conditions for laboratory analysis, included free as part of every roof assessment.
Asbestos Roof Solar FAQs
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Highlights
- No asbestos disturbance or removal required
- New weatherproof roof surface with 40+ year lifespan
- Improved thermal insulation (50mm+ insulation layer)
- Reduced condensation in livestock buildings
- Solar panels mount on standard steel fixing systems
- Building remains weatherproof throughout installation
- Compliant with Control of Asbestos Regulations 2012
- Zero interaction with existing building roof
- Optimal south-facing orientation and tilt angle
- Easy access for maintenance and cleaning
- Compatible with sheep grazing underneath
- Scalable independently of building constraints
- Planning permission typically required
- Slightly higher cost per kW than roof-mounted
- Building age
- Buildings constructed or re-roofed before 2000 may have asbestos cement. Post-2000 buildings use non-asbestos fibre cement alternatives.
- Sheet appearance
- Asbestos cement sheets are typically grey, with a slightly rough surface texture. Weathering produces a chalky, powdery surface layer over time.
- Edge examination
- Broken or cut edges may show visible fibrous material embedded in the cement matrix. Never break sheets to test, always use professional sampling.
- Manufacturer markings
- Some sheets carry embossed or printed manufacturer marks. Brands such as Eternit, Cape, and Turner & Newall produced both asbestos and non-asbestos products depending on the era.
- Building records
- Original building specifications, farm records, or previous survey reports may identify roofing materials. Check with your landlord or estate office if applicable.
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Understanding Asbestos Roof Solar in the UK: Survey, Options and Compliance
Asbestos-containing roofing materials remain present on millions of UK commercial buildings — corrugated asbestos cement (AC) sheeting was the dominant industrial and agricultural roofing material from the 1950s through the early 1980s. Under the Control of Asbestos Regulations 2012, duty holders have a legal obligation to manage ACMs (asbestos-containing materials) in non-domestic premises. Before any solar installation on a building suspected of containing asbestos, a management survey or refurbishment/demolition survey must be completed by a BOHS (British Occupational Hygiene Society) qualified surveyor.
The presence of asbestos does not automatically prohibit solar installation on affected roofs. The key factors are: (1) condition of the asbestos — low-risk, undamaged, well-bonded AC sheets in good condition are typically acceptable for solar mounting with appropriate fixing methods; (2) fibre type — chrysotile (white asbestos, used in AC sheets) is lower risk than blue or brown asbestos; (3) fixing method — traditional through-fixing of solar mounting clamps creates drilling into the AC sheet, generating fibre release risk. Alternative non-penetrating mounting systems using clamped ridge hooks or seated bracket systems avoid this risk and are preferred for asbestos roofs in good condition.
Mounting Options for Asbestos Cement Solar Roofs
Three mounting approaches are viable for AC roofing:
- Hook and clamp systems: Purpose-designed hooks seat in the corrugation profile without penetrating the sheet. Clamp brackets attach at the corrugation ridge. No drilling required. Preferred method for undamaged AC sheets.
- Structural overlay: A new insulated steel or GRP roof cladding is installed over the existing AC sheets (encapsulation), providing a clean non-asbestos substrate for standard solar mounting. Adds cost (£8-£18/m²) but also improves insulation and eliminates long-term ACM management obligations.
- Full AC removal and replacement: Licensed asbestos removal contractor strips all ACM, installs new roof (steel or fibre cement), followed by standard solar mounting. Most expensive option (£15-£40/m² for removal + new roof) but eliminates all asbestos liability and creates optimal solar substrate.
Our asbestos roof solar team co-ordinates with licensed asbestos surveyors and removal contractors as required. We do not drill or penetrate asbestos-containing materials without a completed survey confirming safety and appropriate controls. All our asbestos roof solar projects are delivered with a project-specific asbestos risk assessment and method statement.
Does my asbestos roof need full removal before solar installation?
Not necessarily. Many thousands of UK solar installations have been completed on buildings with AC sheet roofing in good condition using appropriate non-penetrating mounting systems. The decisive factor is the condition report from your asbestos management survey. If the AC sheets are undamaged, well-bonded and in the correct product categories (chrysotile cement sheeting), hook-and-clamp solar mounting without drilling is typically permissible. Poorly maintained, damaged or friable asbestos requires professional remediation before any rooftop work — solar or otherwise.
Who is responsible for asbestos management when a solar installer works on my roof?
Under the Control of Asbestos Regulations 2012, the duty holder (building owner or occupier with responsibility for maintenance) must provide contractors with access to the asbestos management plan and survey register before any work begins. Contractors (including solar installers) must review the asbestos information, carry out their own risk assessment and implement appropriate controls. We require sight of a current asbestos management survey before proceeding with any installation on a building of the relevant age and construction type.
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Our asbestos roof solar team has experience with all types of ACM-containing commercial and agricultural buildings — from corrugated asbestos cement on legacy farm buildings to transite panels on 1960s industrial units. We work with approved asbestos surveyors and licensed removal contractors as required, and have established procedures for hook-and-clamp solar mounting that avoid any penetration of ACM surfaces. All asbestos roof solar projects include a written asbestos risk assessment and method statement signed off by a qualified asbestos coordinator.
Contact us today to arrange a free assessment of your asbestos-containing roof for commercial solar. We'll advise on the most appropriate installation method, estimated costs, and whether an asbestos management survey or full refurbishment survey is required before installation can proceed. Our surveys are free and our advice is honest — we will tell you if solar is not viable on your specific roof, and what remediation would be needed to make it viable.
We recommend contacting us early if you are considering solar on an asbestos-containing building — the survey, method statement and hook-and-clamp design process adds 2-4 weeks to the project programme but ensures the installation is safe, compliant and backed by our full workmanship warranty. All asbestos roof solar projects receive MCS certification and include the documentation required for AIA tax relief, insurance and SEG registration.