Roof Flashing Installation Tips for Asphalt Roll Roofing
When using asphalt roll roofing, follow these tips for secure watertight roof flashing installation. Install flashing at roof valleys, around dormers, vents, skylights and chimneys. Use a generous width of polymer-added bituminous asphalt sheeting for flashing under asphalt roll roofs. Install an asphalt roll surface with polymer bituminous flashing on a low-pitched, but not flat roof. Water can accumulate in the roofing or flashing on a flat roof causing ponding, that will eventually result in rotted underlayment and a roof leak. Provide 6 inches of overlap under each side of the flashing. Lay it from the bottom of the roof to the top, ensuring 4 inches of overlap at each base line. While this flashing is self-adhesive, it is best to nail down the flashing into the roof underlay at the top of each sheet. The adhesive can dry out in hot weather. Fold the flashing over at corners and secure it with either hot or cold asphalt. Make the finished joints smooth so the asphalt roll roofing will lie flat over them. Install bituminous flashing on roof eaves where ice and snow buildup occur.Where to Install Roof Flashing on an Asphalt Roll Roof
How Steep?
How to Install Polymer Bituminous Flashing
How to Create Joints in Bituminous Flashing
Roof Eaves