I would like to ask for a recommendation for a roofing mastic.
I need to drill several holes in the roof to attach the mounting straps.
In the sungrabber instruction said to drill a 1/8" pilot hole, apply roofing mastic over the 1/8" pilot hole and then screw the strap into the roof.
I found in Home Depot a product called Elastomastic 209 by Henry that seems to be good for this application but I am no sure.
Thank you,