Following on from another funsters bitter experience with a Satellite dome coming off his roof That has somewhat dented my confidence about sticking on a Solar panel onto the overcab portion of my roof. I am generally quite knacky at the general fixing jobs though I say myself. However can some of you old salts pass on a few tips on the mystic art of applying Sikaflex 512 effectively. I have one tube and now I am considering purchasing a second as it is quite a big sod 1.590 x 790. I have the four corners, 2 x 530mm and 2 x 180 side plastic mounts. I am putting the 2 x 530 and one 180 on the leading edge to restrict wind flow underneath the panel. I was to put a fair amount of Sikaflex onto the mounts having "roughed up all contact surfaces" and on the designated place was to gently move it around to settle it into the gunge then clean up after I was happy that the "Eagle has landed". Do I need "activater" ? Is ambient temperature crucial ? Is their no replacing some good bolts ? Your comments (constructive) and advice will be appreciated.