RTV408T5GL

Not recommended for concrete and stone expansion joints; horizontal decks, patios, driveway or terrace joints where abrasion or physical abuse is encountered; sealing submerged joints, particularly where porous surfaces permit water infiltration to the bond surface; interior or exterior structural sealing below the waterline in marine applications; structural glazing; food contact or potable water applications. RTV408 cannot be painted as painting over silicone sealant is generally not successful. Paint film does not stretch with extension of the sealant, and adhesion of paint to the sealant is not adequate. Extensive material testing has shown that the following substrates must be tested for good adhesion, and that a primer may be required: plastics, flexible PVC, acrylic resin, natural stone, concrete and wood. Check label and Specification Data Sheet for additional limitations.