Polymer-based foam that delivers premium durability and insulation that withstands the elements, Expands to fill, seal, and insulate effectively around gaps and cracks up to 2.54cm in size, High density foam with a uniform cell structure for durability and overall insulation for your remodelling needs, Superior flexibility withstands building and material movement without compromising its seal, Strong adhesion and bonds to most building materials like wood, concrete, brick, stone, metal, PVC, and more, Excellent UV resistance that reduces brittleness and darkening for long-lasting results