I don't have experience with these panels. If you are only looking for 100 watts of energy you may want to consider a portable folding system that you can place and angle into the sun rather than a roof top install.
Like this
https://www.amazon.com/ECO-WORTHY-Portable-Polycrystalline-Foldable-Suitcase/dp/B00MGLIIQO/ref=sr_1_5?ie=UTF8&qid=1503987659&sr=8-5&keywords=portable+solar+panelFrom what I have read the thin flexible panels aren't very efficient and once placed on the roof have no way to ventilate off heat from the backside which further reduces their efficiency.
