Sellado impermeabilizante exterior de junta perimetral entre pasamuros y conducto de instalaciones, en cerramiento de fachada

Sellado impermeabilizante exterior de junta perimetral de 15 mm de anchura, between PVC pipes of 90 mm in diameter and installation conduit housed inside, with one-component polyurethane-based mortar, on a background of expansion joints of polyethylene, 20 mm in diameter, placed at a depth of at least 2 cm from the exterior edge of the PVC pipes that have been previously fixed, with waterproof cement mortar, inside an opening made in the facade enclosure up to 40 cm thick, and subsequent injection of polyurethane foam against the background of the joint.