Commercial Caulking & Firestopping
Professional sealant solutions for general contractors, property managers, and building owners across Southern Ontario
Serving All of Southern OntarioOur Services
Specialized sealant solutions for commercial and residential projects — from high-rise firestopping to full envelope weatherproofing.
Window & Curtain Wall Caulking
Professional sealant installation and replacement for window systems and curtain wall assemblies in commercial buildings.
Firestopping
Code-compliant firestop installation for wall and floor penetrations, maintaining fire-rated compartmentalization in commercial and residential towers.
Exterior Building Caulking
Complete exterior envelope sealing including precast panels, expansion joints, and building facade joints for weatherproofing protection.
Caulking Repair & Restoration
Assessment and repair of failed sealant joints, including removal of deteriorated caulking and installation of new high-performance sealants.
Smoke Seals
Installation of smoke seal systems for door frames and penetrations to prevent smoke migration between fire compartments.
Need a custom scope or have a unique project?
Request a Free EstimateFeatured Projects
Recent work across Southern Ontario
Southern Ontario's Trusted Commercial Sealant Experts
With over 20 years of experience in commercial caulking and firestopping, All Weather Sealants delivers precision sealant solutions that protect building envelopes and ensure code compliance. We work with general contractors, property managers, and building owners across Southern Ontario.
From high-rise firestopping to exterior precast caulking, our team combines technical expertise with professional reliability. Every project is completed to specification, on schedule, and with full documentation.
Certified & Compliant
All work meets Ontario Building Code and fire safety standards
Experienced Team
20+ years of commercial caulking and firestopping expertise
Full Documentation
Detailed project reports and compliance documentation provided
Reliable Scheduling
On-time project delivery with clear communication throughout
Areas We Serve
Providing professional sealant services across Southern Ontario
- Greater Toronto Area
- Kitchener-Waterloo
- Guelph
- Hamilton
- Cambridge
- Milton
- Fergus
- Orangeville
- Barrie
Don't see your area? We serve all of Southern Ontario — contact us for your project.
What Our Clients Say
Trusted by contractors and property managers across Southern Ontario
“All Weather Sealants delivered exceptional work on our high-rise firestopping project. Professional, on schedule, and thorough documentation. Highly recommended for any commercial project.”
“We've used AWS for multiple caulking projects across our portfolio. Their attention to detail and code compliance is second to none. A reliable partner for any general contractor.”
“Outstanding exterior caulking work on our condominium complex. The team was professional from start to finish, and the quality of work exceeded our expectations.”
Request an Estimate
Contact our team to discuss your commercial caulking or firestopping project. We provide detailed estimates for projects across Southern Ontario.
Our Team
Get in touch with our team to discuss your project