Photovoltaic Installation at Low Temperatures
The demand for PV systems knows no winter break. More and more homeowners want their systems installed even in the cold months. For solar installers, this means installation in frost, wet conditions, and short days. By observing some basic rules, work can be done safely and efficiently even in winter.
Safety on the Roof in Frost and Wet Conditions
Slippery tiles, icy ladders, and restricted visibility are the biggest risks during winter installations. The following measures are essential:
- Wear non-slip shoes with profiled soles
- Consistently use fall protection – even on flat roofs
- Clear work areas of snow and ice before bringing material onto the roof
- Optimize daylight and plan working hours accordingly
Material Behavior in Cold: Why TPU is the Better Choice
Many sealing solutions become brittle at low temperatures and lose their flexibility. Roof penetrations made of TPU (Thermoplastic Polyurethane) retain their elasticity even in freezing temperatures. This is a decisive advantage over conventional materials.
NEXCAPE roof penetrations are manufactured using 3D printing in Germany. TPU remains flexible enough for a clean installation even at sub-zero temperatures. The material adapts to the tile shape and ensures a durable, chafe-free fit of the solar cable – regardless of the season.
Advantages of TPU for Winter Installation
| Property | TPU | Conventional Materials |
| Flexibility in Cold | Remains elastic | Becomes brittle |
| Installation without Tools | Yes | Often not possible |
| UV Resistance | High | Varies |
Cable Routing in Winter: Common Mistakes
Especially in the cold, installers tend to rush work steps. However, careful work is required for cable routing:
- Do not dismantle MC4 connectors: With NEXCAPE roof penetrations, there is no need to remove MC4 connectors. This saves time and avoids mistakes with cold fingers.
- Do not kink cables: Solar cables become stiffer in the cold. Plan generous bending radii.
- Pay attention to moisture: Condensation on cables can lead to problems in frost. Lay the penetration cleanly between the tiles so that the roof covering continues to reliably protect against precipitation.
Planning is Everything: Efficiently Organize Winter Construction Sites
Those who install PV systems in winter should prepare logistics particularly well. All components, including roof penetrations, should be readily available before going onto the roof. NEXCAPE offers variants for 2, 4, and 6 PV cables – each with and without earth cable (PE) – in lengths of 105 mm, 125 mm, and 150 mm. This allows the appropriate penetration to be pre-commissioned for every roof situation.
Conclusion: Winter is No Reason for Compromises
With the right preparation and high-quality materials, PV installation can succeed even in the cold season. TPU roof penetrations are an important component for a reliable installation.
Discover NEXCAPE roof penetrations now and prepare for the next winter construction site: to the TPU roof penetrations for solar cables
