SELF-ADHESIVE VENTILATING WATERPROOFING MEMBRANE

摘要

A self-adhesive ventilating modified bituminous composite that comprises an unmodified bituminous or a polymer modified bituminous compound on the front side and a self-adhesive bituminous compound on the backside of a reinforcement carrier sheet is provided. A transfer lacquer printed release liner is applied to the tacky self-adhesive layer during manufacture. The transfer lacquer printed release liner is removed from the membrane just prior to use, such that the exposed surface of the membrane is placed directly onto the upper surface of the roof deck, base sheet or underlayment; force is applied directly to the sheet to enhance the adhesive bond between the tacky self-adhesive compound and the underlying substrate at approximately 50% of the area of contact in order to achieve a 'partially-adhering' membrane. Such partial attachment of the composite to the underlying substrate provides a channel for the lateral escape of any pressure or latent moisture in the substrate, thereby extending the life of the roofing system. The present invention offers simplicity and improved efficiencies in manufacturing and relates generally to. residential and commercial roofing membranes.