Sink & Countertop Silicone Sealing
Detailed Description
Failed Silicone Around Your Toronto & GTA Kitchen or Bathroom Sink Is Letting Water Into Places You Can’t See
The silicone bead around a kitchen or bathroom sink in a Toronto & GTA home does one critical job: it prevents water from getting between the sink and the countertop, and from there into the cabinet below. When that silicone cracks, shrinks, or grows mould through its thickness, it stops doing that job. Water follows the gap and saturates the particleboard or MDF cabinet sub-top — material that doesn’t recover from sustained moisture exposure. By the time cabinet swelling, discolouration, or odour is apparent below the sink in a Toronto & GTA home, the substrate damage has been occurring for months.
At CNG Contracting, sink silicone replacement in Toronto & GTA is done completely — old sealant fully removed (the part that makes the new application last), surface cleaned and dried, and fresh silicone applied in a clean, consistent bead that seals properly on both sides of the joint. It’s a small job with a large protective function, and it needs to be done correctly to work.
Why Complete Removal Matters in Toronto & GTA Kitchens and Bathrooms
- New Silicone Won’t Bond to Old: Applying fresh silicone over existing degraded sealant without full removal results in adhesion to the old product rather than to the substrate — and when the old product fails, the new one comes with it.
- Mould in the Joint: Bathroom silicone joints in Toronto & GTA homes commonly harbour mould within the sealant body — visible as black streaking that doesn’t clean off. Removing and replacing the sealant is the only effective solution.
- Surface Preparation: Joint surfaces must be clean and dry before new silicone is applied. We prepare properly — including residue removal from the old sealant bead — before application.
- Cure Time Respect: Silicone in wet areas requires appropriate cure time before water contact. We advise on cure time for every installation in your Toronto & GTA home.
Where We Apply Silicone in Toronto & GTA Homes
- Kitchen sink perimeter — where sink meets countertop or undermount flange
- Bathroom vanity sink sealing
- Counter-to-backsplash horizontal joint in kitchens and bathrooms
- Bathtub perimeter — where tub meets tile surround and floor
- Shower base perimeter — shower pan to wall tile joint
Fresh silicone properly applied in your Toronto & GTA home kitchen or bathroom is one of the lowest-cost, highest-impact maintenance tasks available. Book your visit today.
Service Details
| Includes | Old sealant removal, surface prep, silicone application, cure time guidance |
| Time on site | 1 to 2 hours depending on scope |
| Warranty | 2 years on workmanship |
| Licensed & insured | Yes |
| Service area | Toronto & GTA and surrounding GTA |
Frequently Asked — Silicone Sealing in Toronto & GTA
How long does silicone around a kitchen sink last in Toronto & GTA homes?
Quality silicone properly applied and cured lasts 5–10 years in a kitchen environment. Bathroom silicone in wet areas — particularly shower bases — typically needs attention every 3–5 years in Toronto & GTA homes due to the sustained moisture exposure and temperature variation.
Can I use the sink the same day after silicone is applied?
Most silicone products need 24 hours of cure time before water contact for full sealing performance. We advise specifically on the product used and required cure time for every installation at your Toronto & GTA property.
How do I book silicone sealing in Toronto & GTA?
Book online in under two minutes. Our Toronto & GTA team contacts you directly to schedule.
Silicone joint maintenance in Toronto & GTA kitchens and bathrooms extends the lifespan of the countertop and cabinet box beneath it significantly — moisture that reaches behind the silicone joint is the primary cause of cabinet swelling and base cabinet deterioration in Toronto & GTA homes.
Why is a Technical Visit necessary?
Applying new silicone over old silicone is the most common DIY mistake; it simply won't stick and will peel off within weeks. Furthermore, if black mold is trapped behind the old seal, covering it up won't stop it from spreading into the drywall or cabinet. Our Sink & Countertop Silicone Sealing assessment ensures we completely strip the old material and disinfect the gap before applying a fresh, long-lasting watertight seal.
SCHEDULE AN INSPECTION
Request your technical visit.
Tell us what you need and a certified specialist will visit you to evaluate your project and give you a real quote the same day.
WHY DO I NEED A TECHNICAL VISIT?
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1Real diagnosis in your home. A technician evaluates materials, measurements, access, and local regulations.
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2The visit cost is discounted from the project. The fee is fully credited to your final invoice once you approve the quote.
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3No commitment if you don’t approve the quote. If you don’t accept the quote after the visit, there is no obligation to proceed.
- Certified technicians — licensed & insured
- Real quote — same day as the visit
- No surprises — no hidden costs
Talk to an expert
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