Ok, I’ve understood.
GEMINI is a sealing gasket in polyethylene foam that guarantees total sealing of the membranes at the crossing points of the nails which fix the ventilation battens.
At the same time, the double adhesive band ensures perfect adherence between the membrane and the batten, even on slightly irregular surfaces.
Thanks to the fact that the product is structured with closed cells, GEMINI maintains its airtightness and watertightness even if repeatedly drilled or trimmed.
Installation is quick and easy thanks to the double-sided adhesive support.