How long does a flexible 400W solar panel last on an RV roof?
High quality ETFE Flexible panel last 8-12 years. Cheap PET alternatives often fail within 2-3 years due to UV yellowing and microcracks. To maximize life, ensure bottom air flow to prevent thermal stress on cells.
Is one 400W panel better than four 100W panels?
Yes, a single 400W panel Reduces the number of roof penetration and MC4 failure points. More importantly, it is more. Open Circuit Voltage (Voc) Parallel 100W helps to charge your MPPT controller earlier in the morning compared to wires.
Will a flexible panel damage my RV’s rubber roof?
Direct bonding can trap high heat (70°C+), which can degrade TPO or EPDM membranes over time. Using a sacrificial layer or backing board acts as a thermal shield, protecting both the panel and your roof.
