Unlike Vulkem or Parbond, Gutterseal has a tendency to slightly wick into seams, making it a popular choice for sealing panel lap seams.

5 ounce squeeze tube does not require a caulking gun.

Contains Acetone, Methyl Acetate and Tert-Butyl Acetate. See MSDS.

Please note: Ply Gem Industries owns the siding division of Alcoa. Ply Gem has recently started selling Gutterseal under the names "Mastic Gutterseal" or "Aluminum Pigmented Gutterseal" instead of the Alcoa name. The product has not changed but the name has.