Drill a Hole of the appropriate diameter and depth.

Clean drilled hole 3 times.

Insert the fixing into the drilled hole.

Lightly tap the plastic sleeve through the insulation material into hole with a hammer, until fixing depth is reached.

When tightening, press the tip, keeping it precisely perpendicular to the elevation.

Tighten the plug screw until the appropriate embedment depth is reached (the plate should be on one surface with the thermal insulation layer).

Correctly fastened pin.