Choosing the Right Roof Penetration for Your PV System
When installing a photovoltaic system, solar cables must be routed from the roof into the building. The choice of the correct roof penetration depends on several factors: the type of roof tile, the cable diameter, and the number of cables to be routed.
In this comparison, we will introduce you to the different designs of our PV roof penetrations and help you choose the right model.
Which Roof Tile is on Your Roof?
The tile type is the most important selection criterion. Not every penetration fits under every tile – the shape, curvature, and folding determine which model you need.
Frankfurter Pfanne and Concrete Roof Tiles
The Frankfurter Pfanne is the most common roof tile in Germany. For this type of tile, we offer special penetrations with a length of 125 mm, which fit exactly under the pan shape.
Flat and Curved Clay Roof Tiles
For other common tile shapes, we recommend our 150 mm model. The greater length ensures secure support even with different batten spacings.
Compact Roof Structures
For low roof structures, our compact 105 mm variant is suitable – particularly slim, even under closely laid tiles.
How Many Cables Do You Need to Route?
- 2-Way Penetration: Ideal for balcony power plants and small PV systems
- 4-Way Penetration: For larger systems with multiple strings
- Grounding Cable Penetration (16 mm²): Specifically for grounding cables
Route MC4 Connectors Without Disassembly
The cable duct is dimensioned so that MC4 connectors can be routed without disassembling them. This saves time and avoids contact problems caused by re-crimping.
Material and Durability
All roof penetrations are made of UV-resistant technical plastic:
- High UV resistance – no embrittlement
- Temperature resistant from -20°C to +80°C
- Integrated abrasion protection for cable insulation
- Made in Germany
B2B Conditions for Specialist Companies
Tiered pricing from 10 pieces. Contact: info@dachdurchfuehrung24.com | 07054 927999
Frequently Asked Questions
Does the roof penetration fit on my roof?
Our penetrations are designed for pitched roofs with tile roofing. Not suitable for flat roofs or metal roofs.
Do I need special tools?
No. Assembly is completely tool-free in less than 5 minutes.
Can I install the penetration later?
Yes, suitable for new installations and retrofitting alike.
How do I order as a business?
Directly via our shop or by email/phone. Tiered B2B pricing applies from 10 pieces.
