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Steel starts to corrode once moisture and road salt reach bare metal. Industry Painting Ltd. protects steel already in your facility with zinc-rich coatings applied on site to beams, tanks, silos, roofs, and siding.
We serve plants, warehouses and commercial properties across Toronto, the GTA and Southern Ontario.
Industry Painting Ltd. provides zinc coating services for installed steel across Toronto, the GTA and Southern Ontario. As a zinc coating contractor, we sandblast the steel, then spray or brush zinc-rich coatings on site, on beams, tanks, silos, roofs and siding. Zinc blocks moisture and corrodes before steel does. We apply field coatings, not zinc plating or galvanizing.
Rust spreads fastest where water and salt collect: base plates, bolted connections, silo legs, and stair stringers. Once steel loses thickness, recoating stops being the fix. You face engineering reviews, section repairs or replacement, plus the downtime each one brings.
A zinc coating works two ways. First, it blocks moisture and oxygen from reaching the steel.
Second, and more importantly, zinc corrodes before steel does. When a forklift gouges a column or a crew grinds a weld, the surrounding zinc sacrifices itself and slows rust at the bare spot. Ordinary paint has no backup once it gets scratched. This sacrificial protection is why engineers specify zinc for outdoor and industrial steel.
Exposed framing, canopies and loading dock steel take the brunt of Ontario winters. We blast, zinc prime and topcoat structural members in place.
Tank and silo exteriors stay outdoors year-round. We plan access and fall protection, then apply a zinc system suited to the exposure.
Zinc coating adds a protective layer to metal roofing, siding and window frames before rust breaks through.
Welding, cutting and drilling on-site burn off or strip the factory galvanizing. We coat welds, cut edges and damaged areas with zinc-rich paint to restore protection at those weak points.
Zinc makes a strong first layer in a multi-coat system. We topcoat it with epoxy or urethane for chemical resistance, colour and weather protection.
| Feature | Zinc-rich coating | Zinc plating | Hot-dip galvanizing |
|---|---|---|---|
| Where it happens | On site, sprayed or brushed | In an electroplating tank at a shop | In a molten zinc bath at a galvanizing plant |
| Best for | Installed steel, repairs, primer under topcoats | Small parts such as fasteners and brackets | New steel before installation |
| Removal needed | No | Yes | Yes |
| Finish | Matte grey, topcoat adds colour | Bright, often shiny | Grey, spangled or matte |
Industry Painting Ltd. provides zinc-rich coatings. We don’t offer zinc plating or hot-dip galvanizing.
To be fair, for new steel still at the fabricator, hot-dip galvanizing usually puts on a thicker zinc layer. Once the steel is installed, a field-applied zinc coating is the practical route.
Most zinc coating failures trace back to three problems: poor prep, uneven thickness and blistering from moisture or contamination under the coat. Our process targets each one. We blast to spec, measure thickness across the surface, and apply only within the temperature and humidity range on the product data sheet.
Before we recommend a product, we review its manufacturer test data, including salt spray results under ASTM B117.
Field application also skips the electroplating bath, which removes the hydrogen embrittlement risk tied to plating high-strength steel.
Zinc coatings also carry lower health risks than many other coating materials. That makes a difference when crews work inside an occupied facility.
As a zinc coating contractor, Industry Painting Ltd. serves Toronto, North York, Scarborough, Etobicoke, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Hamilton, Kitchener and Waterloo.
Steel starts to corrode once moisture and road salt reach bare metal. Industry Painting Ltd. protects steel already in your facility with zinc-rich coatings applied on site to beams, tanks, silos, roofs, and siding.
Typical issues that zinc coating services address include uneven coating thickness, blistering, and hydrogen embrittlement. These problems often result from poor surface preparation or incorrect bath chemistry. Reputable zinc coating services use controlled plating parameters and post-treatment processes to ensure a uniform, corrosion-resistant finish.
The lifespan of a zinc coating depends on environmental exposure and coating thickness. High-quality finishes from zinc coating services can last 10–30 years, offering durable protection against rust in industrial, marine, and outdoor environments.
Testing performed by professional zinc coating services includes thickness measurement using magnetic gauges, adhesion testing, and salt-spray corrosion testing (ASTM B117). These inspections verify that the coating meets specifications for longevity and protective performance.
Zinc plating performs best under moderate humidity and low corrosive exposure. Industrial clients often rely on zinc coating services to select the appropriate coating type and thickness for service conditions, such as indoor, outdoor, or marine applications.
Type 3 zinc plating is a clear (colourless) chromate conversion coating that provides moderate corrosion resistance while preserving the metallic appearance. Many zinc coating services offer Type 3 finishes for components that require both corrosion protection and aesthetic appeal.
No. Hot-dip galvanizing dips new steel in molten zinc at a plant. Zinc-rich coatings, sometimes called cold galvanizing, go on as a paint. They protect installed steel and repair damaged galvanizing.
No. Zinc needs direct contact with clean steel to protect it. We sandblast before applying any zinc coating.
No. Zinc-rich coatings dry to a matte grey. The shiny finish people picture comes from plating or fresh galvanizing. A topcoat gives you any colour you want.
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