What glue should be used to glue flexible photovoltaic panels

What’s the best adhesive you can use to fix flexible solar panels on your van or RV’s roof? 3M and Sika are the brands that pop up a lot when searching for the right adhesive for flexible panels. [pdf]
[FAQS about What glue should be used to glue flexible photovoltaic panels]

How much does an ultra-thin flexible photovoltaic panel cost

You’ll pay around £1.04 per watt for thin-film solar panels, or roughly £6,240 for a 6 kW system. That’s cheaper than the cost of a 4 kW solar panel system, which will typically set you back £6,500. [pdf]