For some van or suv, there is no where to install the roof rack , in the final measure We need drill small hole on the roof , the diameter of the hole is 5mm and the rivet diameter is 4.8mm,locate the hole position drill the hole and seal with the AB glue to cover the hole, in this way no leak and no rusty, if you want take off the roof rack just drill the rivet again

fix roof rack by rivet

Drill a 5mm diameter hole

fix roof rack by rivet

put on AB glur for seal and antirusty

fix roof rack by rivet

tighted rivet

fix roof rack by rivet