Self-adhesive ventilating waterproofing membrane

A self-adhesive ventilating roofing material, said material comprising:

• a bituminous adhesive layer having an upper surface and a lower surface;
• and
• a removable release liner having an inner surface and an outer surface, wherein said liner is removably attached on the inner surface to the lower surface of the bituminous adhesive layer, said inner surface having a transfer chemical material printed thereon to form a transfer chemical pattern on the inner surface, the transfer chemical material being coupled to the bituminous adhesive layer according to the pattern, the pattern forming a plurality of lateral ventilation paths extending along the lower surface of the bituminous adhesive layer;
• wherein upon removal of the release liner and application of the roofing material to a substrate, the transfer chemical remains coupled to bituminous adhesive layer such that the bituminous adhesive layer provides partial adhesion to the substrate, the pattern being selected to provide ventilation between the roofing material and the substrate.

A self-adhesive ventilating construction material for waterproofing, sealing and/or covering a construction surface comprising:

• a material adapted for waterproofing, sealing and/or covering a construction surface, said material having an upper and lower surface;
• an adhesive component for adhering the lower surface of the material to the construction surface;
• a release liner for protecting said adhesive component having an outer surface and an inner surface, wherein said inner surface is removably attached to the adhesive component;
• wherein the inner surface of the release liner includes a transfer chemical, printed thereon to form a transfer chemical pattern having a plurality of interconnected paths extending along the adhesive component, the chemical transfer pattern adapted to be transferred onto the adhesive layer and to render the adhesive component non-adhesive in areas where the transfer chemical has been transferred, the transfer chemical being attached to the release liner in such a way that upon removal of the release liner from the construction material only a portion of the adhesive component outside the transfer chemical pattern adheres to the construction substrate.

A self-adhesive ventilating roofing material comprising:

• a carrier sheet having a front side and a back side;
• a first bituminous layer having an upper surface and a lower surface, wherein the bituminous layer is attached on the lower surface to the front side of the carrier sheet,
• a second bituminous layer, having an upper surface and a lower surface, wherein said second bituminous layer is a bituminous adhesive layer, wherein the bituminous adhesive layer is attached on the upper surface to the back side of the carrier sheet;
• and
• a removable release liner having an inner surface and an outer surface, wherein said release liner is removably attached to the lower surface of the bituminous adhesive layer, said inner surface having a transfer chemical material printed thereon to form a transfer chemical pattern on the inner surface, the transfer chemical material being coupled to the adhesive layer according to the pattern, the pattern forming a plurality of lateral ventilation paths extending along the lower surface of the bituminous adhesive layer;
• wherein upon removal of the release liner and application of the roofing material to a substrate, the transfer chemical remains coupled to the adhesive layer such that partial adhesion to the substrate results, the pattern being selected to provide ventilation between the roofing material and the substrate.

A self-adhesive ventilating roofing material, said material comprising:

• a carrier sheet having a front side and a back side;
• a first adhesive bituminous layer having an upper surface and a lower surface, wherein the first adhesive bituminous layer is attached on the lower surface to the front side of the carrier;
• a second adhesive bituminous layer, having an upper surface and a lower surface, wherein the second adhesive bituminous layer is attached on the upper surface to the back side of the carrier sheet, wherein the second adhesive bituminous layer is the same as the first adhesive bituminous layer;
• a removable release liner having an inner surface and an outer surface, wherein said removable release liner is removably attached on the inner surface to the lower surface of the second bituminous layer, said inner surface having a transfer chemical material printed thereon to form a transfer chemical pattern on the inner surface, the transfer chemical material being coupled to the second bituminous layer according to the pattern, the pattern forming a plurality of lateral ventilation paths extending along the lower surface of the bituminous adhesive layer;
• and
• wherein upon removal of the release liner and application of the roofing material to a substrate, the transfer chemical remains coupled to the second adhesive bituminous layer such that partial adhesion to the substrate results, the pattern being selected to provide ventilation between the roofing material and the substrate.

A self-adhesive roofing membrane, comprising:

• a roofing material adapted for waterproofing, sealing and/or covering a construction surface, said material having an upper and lower surface;
• an adhesive component for adhering the lower surface of the material to the construction surface, the adhesive component having an outer periphery that includes a first edge, a second edge opposite the first edge, a third edge, and a fourth edge opposite the third edge;
• a release liner for protecting said adhesive component having an outer surface and an inner surface, wherein said inner surface is removably attached to the adhesive component;
• wherein the inner surface of the release liner includes a transfer chemical, printed thereon to form a transfer chemical pattern, adapted to be transferred onto the adhesive layer and to render the adhesive component non-adhesive in areas where the transfer chemical has been transferred, the transfer chemical being attached to the release liner in such a way that upon removal of the release liner from the construction material only the adhesive component outside the transfer chemical pattern is capable of adhering to the construction substrate;
• such that when the membrane is applied to the substrate it is adhered to the substrate in areas outside of the chemical transfer pattern, the transfer chemical pattern being coupled to the adhesive layer and forming a continuous path from the first edge to the second edge and a continuous path from the third edge to the fourth edge,
• said transfer chemical pattern being selected to allow for ventilation between the roofing material and the substrate.

A method of manufacturing a roofing membrane, comprising:

• a) providing a carrier sheet having an adhesive surface;
• b) providing a release liner;
• c) printing a transfer chemical onto the release liner to form a chemical transfer pattern;
• and
• d) applying the release liner with transfer chemical material to the adhesive surface such that the transfer chemical contacts an area of the adhesive surface to render the area non-adhesive along a plurality of ventilation paths according to the chemical transfer pattern, wherein the printed transfer chemical is configured to separate from the release liner upon removal of the release liner from the adhesive surface.