Lets Caulk all Over the World !
Precision sealing for buildings, homes, and commercial projects — preventing leaks and enhancing longevity.
Ontario • Residential • Commercial • Industrial
Tailored Services for Everyone
About Maclellan Services
With over 20 years of experience in the caulking industry, we specialize in sealing joints, waterproofing, and enhancing building durability. Our certified team uses top-grade materials to ensure precision in every project — from stairs and windows to full facades. We’re committed to quality, safety, and customer satisfaction, serving residential, commercial, and industrial clients across Ontario.
Our Services
Reliable sealing. Clean finish. Built to last.
Explore our most common services. Click to see details and real examples of our work.
Sealing building exteriors to protect against weather, moisture intrusion, and long-term deterioration. Perfect for brick, siding, windows, and doors.

Joints, trim, windows, and doors sealed for energy efficiency, noise reduction, and a clean, finished aesthetic inside homes and offices.

Foundations, basements, retaining walls, and below-grade structures protected from water ingress to prevent costly damage and mold.

Large-scale caulking and sealing for multi-unit residential, office buildings, retail centers, and institutional facilities — done efficiently with minimal disruption.

Tailored caulking applications for architectural features, expansion joints, curtain walls, precast panels, and unique design elements.

Featured Projects
Recent projects across residential and commercial sites.



Caulking Details
Close-up precision sealing for durability and leak prevention.
What Our Clients Say
“Maclellan Services did an outstanding job on our condo project. Professional and efficient!”
— Client A, Hamilton“Their attention to detail in waterproofing saved us from potential issues. Highly recommend.”
— Client B, OntarioTrusted by




