- Sensitive roof covering: Avoid damage or punctures during installation.
- Waterproofing: Ensure all fasteners are properly sealed and the roof remains waterproof.
- Roof type (cold or warm roof): The roof structure determines the required mounting system.
- Temperature movement: Allow for expansion and shrinkage by mounting without tension and ensuring ventilation.
Solar panels on bitumen/EPDM or PVC roofs

Installing solar panels on pitched roofs with bitumen, EPDM or PVC requires good preparation. These roof types are susceptible to damage and leakage if you attach incorrectly.
With the right mounting system, you can safely install solar panels without damaging the roofing. This way you combine speed with a reliable and durable solution.
What installers should pay attention to
Cold roof – standard mounting systems

For cold roofs, you can work with:
These systems are attached with roof hooks that are finished watertight.
Advantages of ValkAce+:
- Panels automatically secured with ValkGrip
- Profiles aligned more quickly with ValkMount
- Fewer steps required on the roof
- Universal centre and end clamps
Advantages of ValkPitched – Insert:
- Panels slide into profiles (no clamps)
- Quick and neat assembly
- Automatic alignment
- Less material needed
Suitable for pitched roofs with bitumen, EPDM or PVC without insulation directly under the roof covering.
Warm roof – special solution needed

For warm roofs, use ValkSolarFix.
This system is necessary because:
- There is insulation under the roofing
- Standard mounting poses risk of leakage or damage
With ValkSolarFix you can work safely and watertight, without damaging the roof structure.
This is the right choice for pitched roofs with insulation under the roofing.
Frequently asked questions
Is the answer to your question not listed? Contact Van der Valk Solar Systems for tailor-made advice.
For cold roofs: ValkAce+ and ValkPitched – Insert.
For warm roofs: ValkSolarFix.
Yes, if the fastening and sealing are done properly. The roofer is responsible for the sealing.
All common panels, including larger and heavier panels.
Yes, with the available cable management solutions.
'If you’re looking for ease of installation, flexibility, and safety, then Van der Valk Solar Systems is the company for you.'
Sunforce