Scaffolding for photovoltaic installation: what you really need
The photovoltaic market is booming. More and more businesses in the electrical, roofing and trades sectors are expanding their services to include PV installation. What is often underestimated is that securing the roof during installation is a legal requirement – and a standard ladder or roof ladder is not sufficient for most projects.
This guide explains what scaffolding you really need for photovoltaic installation, when scaffolding is compulsory, which systems are suitable for solar installers – and how you can save money in the long term by using your own CETRAC scaffolding.
Is scaffolding compulsory when installing solar panels?
The clear answer: in most cases, yes. The relevant standards are TRBS 2121, Part 1 (Technical Rules for Operational Safety – Risks of Falling from Height when Using Ladders) and DGUV Rule 101–604 (Industry Guidelines for Roof Work). These stipulate that the risk of falls from height when working on roofs must be mitigated by appropriate collective protective measures.
Scaffolding is regarded as the safest and, in many cases, the only collective protective measure that complies with standards. Alternatives such as safety harnesses and fall protection PPE (personal protective equipment) are only suitable for certain projects where scaffolding is not technically feasible.
When exactly is scaffolding required for PV installations?
Work on pitched roofs generally requires fall protection as soon as the fall height exceeds 2 m – which is almost always the case when working on house roofs. The duration and frequency of the work also play a role: anyone who climbs onto roofs several times a week requires a permanent, standard-compliant safety system. Having your own scaffolding is the most cost-effective and safest solution in this case.
Scaffolding safety: Permits, obligations & standards
Which scaffolding should be used for PV installation?
The three most important systems:
1 Roofing scaffolding – the standard solution for solar installers
Roofing scaffolding is by far the most common type of scaffolding used for photovoltaic installation on pitched roofs. It is erected along the eaves of the building and provides a stable working platform directly beneath the roof edge. From this platform, the solar installer can work safely and place modules, tools and materials right next to them – without having to take risky steps across the sloping roof.
Why the roofing scaffold is ideal for PV installations: it provides a safe route up and down, a stable working platform along the entire length of the eaves, sufficient space for PV modules, cable duct sections and installation accessories, as well as the option to easily integrate a roof safety net or a protective screen. It has a modular design and adapts to any building height and length.
Suitable for: Pitched gable roofs, monopitch roofs, hipped roofs – wherever the work is carried out along a clear eaves line.
2 Facade scaffolding + roof safety system – for multi-storey buildings
For multi-storey residential blocks or buildings with a greater eaves height, full-height facade scaffolding is often the more sensible solution. It not only provides fall protection at the roof edge, but also safe access routes across several storeys and a stable base for heavy loads such as pallets of PV modules.
Auf das Fassadengerüst wird an der Dachkante eine Dachfangkonstruktion montiert - bestehend aus Schutzwandstützen, Schutzwänden oder Seitenschutznetzen nach DIN EN 1263-1. Diese Kombination aus Fassadengerüst und Dachfang ist bei größeren PV-Projekten auf Mehrfamilienhäusern oder Gewerbegebäuden der Standard.
Suitable for the following projects: blocks of flats, commercial properties, industrial buildings with flat-roof parapets, and projects requiring a large quantity of materials.
3. Mobile scaffolding / rolling scaffolding – for flat-roof solar panel installations
For PV installations on flat roofs, mobile scaffolding is often the right choice. It can be moved quickly, does not require complex anchoring and allows for flexible working across the entire roof area. On flat roofs, there is no risk of falling from the roof surface itself – however, parapet or roof edge protection is essential here.
Suitable for: commercial buildings with flat roofs, industrial halls, carports with flat roofs, logistics centres.
About roofing scaffoldingGo to roof safety scaffoldingGo to facade scaffolding
System comparison – which scaffolding system is best suited to which PV application?
What requirements must scaffolding for PV installation meet?
Not every scaffolding automatically meets all the requirements for photovoltaic installation. Make sure you consider these four criteria:
1. Sufficient load-bearing capacity (load class)
Depending on the type, PV modules weigh between 18 and 30 kg each. A typical PV system for a detached house comprises 20–30 modules, plus mounting rails, tools, cabling and 1–2 people on the platform. This quickly results in a surface load of 1.5–2.5 kN/m². Load class 3 in accordance with DIN EN 12811 (2.00 kN/m²) is therefore the appropriate standard for most PV projects. For larger commercial projects with a higher material throughput, load class 4 may be appropriate.
2. Sufficient working width (width class)
A PV module typically measures 1.0–1.1 m in width and 1.6–2.1 m in length. You’ll need sufficient space to transport the module safely on the scaffolding platform. A scaffold width of at least 0.73 m is the absolute minimum; for comfortable working with modules, rails and tools, platform widths of 0.90 m or more are recommended – ideally extended to 1.09 m or more using brackets.
3. Full-length side protection
The three-part side guard (railing, intermediate rail, toe board) is mandatory across the entire working platform – not just on one side. In particular, the advance guardrail during assembly is regulated in TRBS 2121-1 and must be complied with.
4. Safe access and egress
For scaffolding used regularly to transport materials and personnel, a scaffolding staircase is significantly safer than a ladder. It allows PV modules and heavy tools to be transported without the risk of falling. The investment in a stair tower pays for itself quickly, particularly for companies that carry out several PV projects every day.
Prices – how much does scaffolding for solar panel installations cost?
Prices for roofing scaffolding at CETRAC (second-hand, inspected)
As at: 04/2026. All prices are exclusive of VAT and delivery charges. Prices are subject to change.
What size frame do I need for a typical solar panel system?
As a rule of thumb for the required scaffolding area for roofing work, the following applies:
Eaves length × 1 scaffolding level height (approx. 2.00–3.00 m) = scaffolding area (m²)
For a detached house with a eaves length of 10 m and a scaffolding height of 3.00 m, the calculation is as follows: 10 m × 3.00 m = 30 m²
For a building with two affected roof sides, the area doubles accordingly. With EasyFlow, CETRAC’s digital configurator, the exact requirements can be determined in just a few minutes.
Buying rather than renting – particularly sensible for solar installers
Photovoltaic installation is not a one-off project. Solar installers and roofers who regularly install PV systems face the same situation every week: erecting scaffolding, installing the PV system, dismantling the scaffolding, then moving on to the next site. Those who hire equipment every time end up paying monthly hire charges, facing delivery delays and being at the mercy of the hire company’s schedule.
The costs involved in running a solar installation business:
Angenommen, ein Betrieb realisiert 30 PV-Projekte pro Jahr und mietet dafür jeweils ein Gerüst für ca. 3 - 5 Tage je Projekt. Bei einem Mietpreis von ca. 150 - 250 € pro Woche entstehen so runde 5.000 - 7.500 € jährliche Mietkosten - bei oft unzuverlässiger Verfügbarkeit.
A CETRAC 102-m² scaffolding unit costs from around 3,816 €. This means that your own scaffolding is already more cost-effective after just the first year of use – and if you no longer need it, you can sell it back via the CETRAC Rebuy option at a fair market price.
What solar installers should pay particular attention to when buying scaffolding
Weight and transport: As solar installers often have to transport their scaffolding from one building site to another, the total weight is an important factor. Systems with aluminium decks are considerably lighter to transport. Hünnebeck Bosta and Plettac SL are known for being easy to handle.
Storage: A 102-m² scaffolding can be stacked compactly within the space of a Euro pallet. For mobile businesses without large storage facilities, this is a clear advantage over bulky structures.
Plan for accessories right from the start: For PV work, you generally need not only frames and decking, but also: toe boards (mandatory on the outer side), a complete three-part side protection system, scaffolding anchors for multi-storey buildings and, where necessary, protective wall braces and safety nets for roof access. The full kit from CETRAC includes all essential components.
Scaffolding load classes explained simply
Checklist – Using scaffolding for PV installation in accordance with standards
Before any work on the roof, you should go through this checklist:
Before assembly:
- Load-bearing capacity of the subfloor checked (leg spindles on a firm, level surface)
- Scaffolding plan / assembly instructions available
- Checked that all components are present
- Risk of falling and load class specified
During assembly:
- Advance guardrail installed in accordance with TRBS 2121-1
- All decks are securely suspended and secured to prevent them from lifting
- Three-part side guard (railing strut, intermediate strut, toe board), fully assembled
- Scaffolding anchors installed (observe system-specific spacing)
- Access points secured and the ascent authorised
Before using for the first time:
- Visual inspection by an authorised person
- Approval certificate (scaffolding certificate) completed and displayed in a visible position
- Load class and instructions for use documented on the scaffolding
Every day whilst using it:
- Visual inspection before each shift
- Check the scaffolding again after a storm or strong winds
- Do not carry out any unauthorised alterations to the scaffolding
Request a free consultation for solar installers & roofers
CETRAC: a partner for solar installers and roofers
CETRAC specialises in the trade in second-hand, inspected scaffolding and formwork. What this means in practical terms for solar installers and roofers:
Huge selection in stock: 446,448 individual parts and more than 50,000 m² of scaffolding are available immediately. No long waiting times, no delivery delays.
Quality assured: Every part is checked for cracks, deformation, corrosion and full functionality in our 24,000 m² warehouse in Leipzig. You know exactly what you’re buying.
Rebuy option: You buy it, use it – and when the scaffolding is no longer needed, CETRAC buys it back. A fair market price, immediate payment, and well-organised logistics.
Fast delivery: Within Germany, CETRAC delivers within 24–48 hours. Express delivery is available for urgent projects. Collection directly from Leipzig is possible at any time.
Enquire now about scaffolding for PV installationView stockGet a free consultation
FAQ – Scaffolding for photovoltaic installation
When working on pitched roofs with a fall height of more than 2 m, a collective fall protection system is mandatory. Scaffolding is the safest and most commonly chosen solution. Only in exceptional cases – where scaffolding is not technically feasible – can personal fall protection equipment be used as an alternative. For all regular roofing work, dedicated scaffolding is the most professional and cost-effective choice.
This roofing scaffold is the ideal choice for a traditional detached house with a gable roof. It is erected along the eaves, provides a stable working platform at eaves height and can be combined with roof safety devices. For a detached house with an eaves length of approx. 10 m, scaffolding measuring approx. 30–50 m² is sufficient.
PV modules weigh 18–30 kg each. Taking into account the weight of the rails, tools and people on the platform, load class 3 (2.00 kN/m²) is sufficient for most domestic and commercial PV projects. For very heavy installations or the transport of pallets on the platform, load class 4 may be appropriate.
Simple work scaffolding on private property may, in principle, be erected by non-specialists – provided this is done strictly in accordance with the manufacturer’s instructions and with all safety components in place. For commercial use, trained personnel are recommended. The completed scaffolding must be inspected and approved by a competent person before it is used for the first time.
For a detached house with approx. 100 m² of scaffolding area, used, inspected roofing scaffolds from CETRAC start at approx. 2,440 € (Layher Allround, 101 m²) up to approx. 3,816 € (Hünnebeck Bosta, 102 m²). These are one-off costs – compared with ongoing hire costs of approx. 150–250 per use.
Roofing scaffolding is a work platform from which work is carried out on the roof. Roof fall protection scaffolding is purely a fall protection system designed to prevent people or materials from falling off the roof. In practice, the two are often combined: the facade scaffolding forms the base, whilst the roof fall protection system provides protection at the edge.
Auf einem Flachdach ist die Absturzgefahr an der Dachfläche selbst geringer. Relevant ist jedoch die Absturzsicherung an der Dachkante bzw. Brüstung. Reicht die vorhandene Brüstung nicht als Schutz aus, ist eine zusätzliche Absicherung - zum Beispiel durch ein Rollgerüst an der Kante oder ein Seitenschutzsystem - erforderlich. Im Zweifelsfall sollte eine Gefährdungsbeurteilung durch eine befähigte Person erstellt werden.
Yes. CETRAC usually delivers within Germany within 1–3 days; express deliveries within 24–48 hours are available on request. Collection from the Leipzig warehouse is possible immediately. For regular customers, CETRAC also offers framework terms and preferential availability.
Yes. With the CETRAC Rebuy Option, CETRAC buys back your scaffolding once the project is complete – at market-rate prices, with an immediate down payment and organised collection. This makes purchasing scaffolding particularly attractive for seasonal PV contractors.