... Tear Strength of 25 psi. It will seal curtainwall joints, steel and aluminum windows, and skylights. Indoor uses ... insulating glass glazing, concrete and stone expansion joints, horizontal decks, patios, driveway or terrace joints where abrasion is possible. Not ... use on concrete, marble, limestone, lead coated surfaces, submerged joints (swimming pools), plazas, decks, pavements, etc. Remove all ...