Warranty and Guarantee: What applies to PV roof penetrations?
As a solar installer, you are responsible to the end customer for the proper installation of PV roof penetrations. But what happens if the material fails? The distinction between statutory warranty and voluntary manufacturer's guarantee is crucial in the B2B business – especially for safety-relevant components like cable penetrations.
Warranty vs. Guarantee: The Difference
Statutory warranty regulates defect claims between buyer and seller. In the B2B sector, the period is generally twelve months from delivery. The guarantee, on the other hand, is a voluntary commitment by the manufacturer that can go beyond statutory obligations.
- Warranty: Statutory claim for defects at the time of delivery
- Guarantee: Voluntary manufacturer's promise for durability or function
- Product liability: Applies to damages caused by defective products, regardless of the purchase contract
What solar installers should consider when choosing materials
Not all materials age the same way. PV roof penetrations are permanently exposed to UV radiation, temperature fluctuations, and moisture. Inferior plastics become brittle, crack, and lose their sealing properties – often only after the warranty period has expired.
TPU (Thermoplastic Polyurethane) offers clear advantages over conventional materials here. It remains flexible even after years, is UV-resistant, and withstands mechanical stress. NEXCAPE roof penetrations are manufactured from TPU using 3D printing in Germany, thus meeting high quality standards.
Documentation as a safeguard
For solar installers, meticulous documentation of the installed materials is essential. In the event of a warranty claim, it must be provable which product was installed when and where.
- Keep delivery notes and invoices
- Document product name and batch
- Create photo documentation of the assembly
- Archive manufacturer's datasheets
Minimize liability risks
Choosing certified brand products significantly reduces the risk of complaints. Cheap products without clear origin or material identification can become expensive in the event of damage – not only financially, but also for the reputation of the installation company.NEXCAPE: Quality from Germany
All NEXCAPE roof penetrations are made from high-quality TPU and undergo strict quality controls. Manufacturing is done via 3D printing in Germany. Available in 2 PV, 4 PV, and 6 PV variants – each also with PE penetration for the grounding cable. For orders of 20 units or more, solar installers benefit from attractive bulk discounts.
Find the right roof penetration now: PV Cable Roof Penetrations in the Shop
