Mulco

Mulco Supra Expert™ Thermoplastic Sealant for Siding & Exterior Sealing
Mulco Supra Expert™ is a contractor-trusted, one-component thermoplastic sealant designed for reliable performance in harsh Canadian weather. With excellent adhesion to multiple materials and a bubble-free formula, Supra Expert delivers consistent, professional-grade results on every job.

Ideal for Siding, Doors & Windows
Supra Expert is the go-to sealant for siding installers and exterior contractors who demand a clean, smooth bead and lasting hold. It adheres to concrete, masonry, wood, glass, painted metals, fiberglass, and more – making it a versatile choice for sealing around frames, panels, and trim.

All-Weather Flexibility & Fast Rain Resistance
Formulated to remain flexible down to -30°C and provide instant rain resistance, Supra Expert performs in demanding outdoor conditions. High elasticity helps prevent cracking and maintains strong seals over time.

Available in Multiple Colours & 300 ml Tubes
We stock a wide range of colours in 300 ml tubes to match siding and trim materials. Ships across Canada for convenient access on any exterior project.