Sealing elements that are not tied to one sheet profile — for coverings where a shaped sealer does not fit, or where the profile is non-standard.
Polyurethane foam with an adhesive strip. The strip holds the sealer in position during installation, which on a windy roof is the difference between a job done once and a job done twice.
Filling gaps under metal roofing — tile-profile and trapezoidal sheeting — at eaves, ridge and along the verge, wherever the geometry is not repeatable enough for a profiled sealer.