Commercial Caulking Contractors in Toronto & the GTA
Sealing Success in every Structure
Your building deserves more than just caulking—it needs a durable, code-compliant seal. Costa Caulking brings 50+ years of specialized commercial experience to towers, mid-rise developments, retail plazas, institutions, and industrial sites. We match the right products and methods to each substrate and joint detail for performance that lasts.
Bring our field-tested expertise to your next project.
Commercial Caulking Process — Video Walkthrough
Watch how Costa Caulking prepares substrates, installs backer rod, and applies commercial-grade sealants for curtain wall, precast, and masonry interfaces on GTA job sites.
Built for schedules, specs, and safety
Precision scheduling to keep your projects on track.
We know schedules and communication is very important in running a job site. That’s why we have a dedicated foreman to assist at any time you need.
Use of top-grade, specified products for long-lasting results.
We install manufacturer-approved systems (e.g., Dowsil, Tremco, 3M, Hilti) matched to substrate, joint movement, and exposure—no corner-cutting, just tested assemblies.
A relentless focus on safety, minimizing risks on your work site.
Teams trained for swing stages and boom lifts with proper rigging and site orientations. Documentation on request: WSIB clearance, insurance, and certifications.
These points make Costa Caulking a solid choice for your building needs.
Comprehensive Commercial Services
Complete caulking, spray foam, and firestopping—tailored to the needs of commercial, institutional, industrial, and multi-residential properties.
Protection against water infiltration, weather damage, and energy loss.
- curtainwall /window wall
- stucco / precast to precast
- Precast Stairs / HM Doors
- glazing / control joints
Enhance safety by sealing penetrations and joints, preventing the spread of fire. Learn more
- Mineral Wool
- Slab Edge
- Top of Wall
- Demising Walls
Our spray foam sealing improves insulation, enhances energy efficiency, and provides an airtight barrier against moisture and drafts.
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Windows/Doors
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Vent Boxes
Provides a seamless, polished look while sealing gaps for enhanced durability, efficiency, and aesthetic appeal.
- Common Areas / Suites
- Showers, Doors Trims, Baseboards, etc..
Seismic caulking joints are used to seal really large expansion joints in walls and floors that have the potential of a lot of movement.
- High/Low Rise Buildings
- Hospitals and Schools
- Parking Garages, Bridges and Walkways
Harbour TEN10 | Whitby, ON
MV1 Condos | Milton, ON
Leeswood Construction Project | Brampton, ON
Sage 9 Condos | Waterloo, ON
Rogers Center
The Beer Store
Casinorama
Paramount Restaurant
Strip Mall Thorhiill
Loblaws Supermarket
Retirement Home Orillia
Tim Horton’s
Transform Your Building Today
Say goodbye to leaks, drafts, and wasted energy. Costa Caulking delivers precision, reliability, and lasting results—protect your property now.
(416) 898-8611
Costa Caulking—Your Building’s First Line of Defense.
We know that its very important to your tenants that we do our job with minimal impact. We work with many property managers to navigate the complexities of recaulking full communities. We have great experience with this.