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Ideal for rubber roofs For use under moldings, and around windows, doors and ventsCan be used to seal and waterproof overlapping metalsCan be used under framed walls as a sound moisture barrierHeavy, flexible non-hardening butyl materialEasily shaped and formed to seal difficult areasReleases easily from it's silicone-treated backerBest results if applied at room temperature on dry materialsOne year shelf life