Alpha Systems 862157 Low VOC Non-Sag Sealant, 10.3 oz., White

Withstands the wear and tear of outdoor elements and blocks air and moisture from leaking through your roof. Made for vertical, uneven, and slanted application, it’s the perfect solution for sidewalls and end rails of your RV. Plus, once it’s fully cured, it can hold up against the shock, vibrations, and stress of outdoor transportation.