Costa Caulking – Professionals in Toronto & Vaughan
The Sealant Professionals
As a family owned and operated business we believe in old world values. Treat your customer with respect and honesty and it will be reciprocated. With these values Costa Caulking services has grown to what it is today.
Our Caulking Services
We provide professional caulking and sealant services for homes, commercial properties, and multi-storey buildings across the Greater Toronto Area.
Residential Caulking
Residential Caulking
Protect your home from drafts, moisture and energy loss with professional exterior and interior caulking. Explore our premium Foreverseal™ service for the ultimate in long-term protection and peace of mind.
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Commercial Caulking
Commercial Caulking
For property managers, contractors, condominiums and larger building projects. We provide dependable sealing solutions for commercial buildings, offices, retail spaces and managed properties.
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Mid-Rise & High-Rise
Mid-Rise & High-Rise Caulking
Experienced in elevated-access caulking for multi-storey buildings, including projects completed with swing stages, lifts and other specialized access equipment.
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Interior & Landscape
Interior & Landscape Caulking
Detailed sealing for interior finishes, bathrooms, trim, concrete joints, stonework, pool areas and exterior hardscapes. We provide clean, durable results suited to the surrounding materials and conditions.
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Firestopping
Firestopping Services
Code-compliant firestopping systems help limit the spread of fire, smoke and hot gases through penetrations and joints. We install solutions suited to commercial, institutional and multi-unit buildings.
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Seismic & Expansion Joints
Seismic & Expansion Joint Sealing
Specialized joint sealing systems designed to accommodate structural movement while helping protect commercial, high-rise and institutional buildings from moisture and weather exposure.
Learn MoreA family run business you can rely on with over 50 years experience
Costa Caulking is a family-run caulking company built on generations of hands-on experience in residential and commercial caulking and sealant work across Toronto and the Greater Toronto Area. We take pride in delivering consistent, high-quality caulking services on every project — from homes and condominiums to large-scale commercial buildings and multi-storey properties.
Our approach is straightforward: use the right sealants, apply them with precision, and stand behind every job. Over the years, we’ve built long-term relationships with homeowners, contractors, and property managers who rely on us for dependable, professional caulking solutions.
Experience
Years of hands-on experience across residential, commercial, and high-rise projects.
Professional Crew
Quality Materials
Reliable Service
What Our Clients Say
We’re proud to be trusted by homeowners, contractors, and property managers across the GTA.
We recently hired Costa Caulking to re-caulk our home & couldn’t be happier with the results…They were incredibly professional, meticulous, & took great pride in their craftsmanship.
Recent Projects, Videos & Insights
See our recent caulking projects across Toronto and the GTA, including residential, commercial, and high-rise work. Explore real results, on-site videos, and practical insights from the field.
Rogers Centre Caulking Project: Helping Stop Water Leaks at the Marriott
Costa Caulking recently returned to continue work on a leak repair project at the Marriott inside Rogers Centre. This project began last year, when our team completed one section of the building where water leaks were affecting multiple rooms. After that first phase...
Henley Place Case Study: Commercial Caulking in Cold Weather Conditions
Commercial caulking projects often involve challenges that aren’t immediately visible. Large properties can include interior courtyards, narrow access points, and finished surfaces that limit where equipment can be used. When caulking in cold weather is added to the...
Why Commercial Caulking Fails — And How Proper Installation Prevents Future Cracks
We explain why old caulking must be fully removed, how joint depth and flexibility directly impact long-term performance, and why techniques such as backer rod installation are critical in commercial applications. These details are often overlooked, yet they play a major role in how well a building envelope performs over time.
