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.

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5/5

Homestars

5/5

TrustedPros

5/5

Facebook

4.7/5

Google

LIMITED PREMIUM CAULKING LAUNCH OFFER

Introducing ForeverSeal®

Protect your home with Costa Caulking’s premium window and door re-caulking system, backed by a limited lifetime no-crack, no-peel guarantee.* Built on more than 50 years of caulking experience, ForeverSeal® provides lasting protection against drafts, moisture and unwanted pests.

A limited number of launch packages are available with exclusive bonus upgrades. Once they’re claimed, the bonuses end.

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*Eligibility requirements, exclusions and conditions apply.

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

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

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 and High-Rise

Mid-Rise and 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 and Landscape

Interior and 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 and Expansion Joints

Seismic and 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.

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A 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.

Costa Caulking proudly offers a 10-year warranty on our residential re-caulking services and materials. For homeowners seeking our highest level of long-term protection, select Foreverseal™ packages include an optional lifetime warranty. It’s another way we stand behind the quality of our workmanship.

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Experience

Years of hands-on experience across residential, commercial, and high-rise projects.

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Professional Crew

Trained, reliable crews focused on clean application and consistent results and professionalism.

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Quality Materials

We use proven sealants designed for durability, flexibility, and long-term performance.

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Reliable Service

Clear communication, dependable scheduling, and work completed with care.

What Our Clients Say

We’re proud to be trusted by homeowners, contractors, and property managers across the GTA. Read more testimonials

Costa Caulking was, without a doubt, the perfect choice for redoing the caulking on my house. They exemplified professionalism from the moment I called until the job was complete. Excellent-quality work.

Carl

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.

Rob

I recently used Costa Caulking services and they were very professional, starting from Robert quoting the work and Dalton completing the job as promised, thank you for great service.

Gabriela D

    
 
 
         
   Armando La Civita 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service from Robert who gave us the initial quote (and responded to all our subsequent inquiries) to the caulk team of Armando. The caulk application is generous and flawless!
  
 
        
   Bart Boniface 
 
 
 
 Trustindex verifies that the original source of the review is Google. From start to finish we were very pleased with the work Costa Caulking did on our church building.  Their estimator Rob was very thorough and a pleasure to deal with.  The father and son team were conscientious and did a wonderful job.  We would definitely recommend them.
  
 
        
   Vinnie Staffiere 
 
 
 
 Trustindex verifies that the original source of the review is Google. Just had all my windows and doors recaulked on my 24-year old house. Armando and his assistant did an amazing job. They not only removed all the old caulking but applied new caulking on all my windows and doors. They also removed all the rust that had built up around some of my windows and repainted with rust-proof paint. They were professional, quick and I appreciated how they were careful with moving some of my planters. They did a great job cleaning up as well. Very friendly. I highly recommend them.
  
 
        
   Nadia Howell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent work!
  
 
        
   Joan Shadney 
 
 
 
 Trustindex verifies that the original source of the review is Google. I AM VERY PLEASED WITH THE NEAT PROFFESIONAL JOB THE MEN WERE POLITE AND EFFECIENT UPON INSPECTION  THEY ADRESSED ALL OUTSIDE PLUGS AND VENTS AMAZING WORKMANSHIP
  
 
        
   Nick Moore 
 
 
 
 Trustindex verifies that the original source of the review is Google. Costa did a great job. The job was done on time and looks great. Thank you.
  
 
        
   Anthony Davis 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent workmanship, great value and efficient
  
 
        
   Amir Datoo 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service, quality work, crew was professional
  
 
        
   Sean t Walsh 
 
 
 
 Trustindex verifies that the original source of the review is Google. This is an outstanding company! If you are in need of a very reliable caulking company - Costa Caulking is your company. The crew is extremely efficient at completing a superb neat job. There was no evidence of any old caulking on site. Great service with invoicing and quick responses when answering your correspondences. This company is 10 out 10!
  
 
        
   Alanna S 
 
 
 
 Trustindex verifies that the original source of the review is Google. Costa was a great company to deal with from beginning to end. Kevin and his team are friendly, professional and very thorough. Would recommend their high quality work.
  
 
  
 
  
 
   Google rating score: 4.7 of 5, based on 47 reviews 
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

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

Jul 23, 2026 | Case Study

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

Jan 13, 2026 | Case Study

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

Dec 17, 2025 | Tips and Guides

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.

Professional Caulking services in Toronto, Vaughan, Mississauga & Surrounding Area

Costa Caulking provides professional residential and commercial caulking services across Toronto and the surrounding areas, including Vaughan, Markham, Richmond Hill, Mississauga, Brampton, Oakville, Burlington, Milton, and Hamilton. Learn more about our service coverage

Have a residential or commercial caulking project in Toronto, Vaughan, or the Greater Toronto Area? Contact Costa Caulking for reliable, professional caulking and sealant services tailored to your project.

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Residential Caulking Quote

Commercial Caulking Quote

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Costa Caulking – Professionals in Toronto & Vaughan

The Sealant Professionals

5/5

5/5

5/5

4.7/5

Introducing ForeverSeal®

Our Caulking Services

Residential Caulking

Residential Caulking

Commercial Caulking

Commercial Caulking

Mid-Rise and High-Rise

Mid-Rise and High-Rise Caulking

Interior and Landscape

Interior and Landscape Caulking

Firestopping

Firestopping Services

Seismic and Expansion Joints

Seismic and Expansion Joint Sealing

A family run business you can rely on with over 50 years experience

Experience

Professional Crew

Quality Materials

Reliable Service

What Our Clients Say

Recent Projects, Videos & Insights

Rogers Centre Caulking Project: Helping Stop Water Leaks at the Marriott

Henley Place Case Study: Commercial Caulking in Cold Weather Conditions

Why Commercial Caulking Fails — And How Proper Installation Prevents Future Cracks

Professional Caulking services in Toronto, Vaughan, Mississauga & Surrounding Area

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Caulking Services

Over 50 years of Quality Caulking Services

Costa Caulking