Mulco Flextra is resistant to normal weathering conditions such as rain, sunlight, snow, ultraviolet radiation, ozone, atmospheric contamination and pollution. The performances of Flextra as well as its easy use make it an ideal choice for numerous utilizations. Its professional quality makes it the best choice for handymen. Used to seal joints between two perpendicular surfaces subject to thermal movement. For sealing outdoor joints around door and window frames, sidings and glass in window frames. Excellent adhesion to steel, galvanized steel, metal, painted or stained wood, natural, painted or anodized aluminum, concrete, masonry, glass, fibreglass and vinyl (PVC).