Secondary Containment Coatings Toronto: Chemical-Resistant, Impermeable & Spill Control Flooring Systems
Toronto Precision Epoxy Flooring installs secondary containment coating systems engineered for industrial environments where chemical spills, leaks, and environmental compliance are critical. These systems create seamless, non-porous, and chemically resistant barriers designed for chemical storage areas, tank farms, loading zones, and industrial processing facilities across Toronto. Built to withstand acids, solvents, fuels, and caustic chemicals such as sulfuric acid, hydrochloric acid, and sodium hydroxide, our coatings prevent liquid penetration, protect concrete substrates, and maintain long-term containment integrity under continuous exposure.
Secondary containment areas must meet strict environmental and safety regulations, including spill containment requirements aligned with standards such as EPA 40 CFR 264.175 (containment systems), SPCC (Spill Prevention, Control, and Countermeasure) guidelines, and Canadian environmental protection frameworks. These regulations require impermeable, liquid-tight surfaces capable of containing hazardous materials without leakage. Concrete is inherently porous and can absorb chemicals, allowing contaminants to migrate into the substrate or surrounding environment. Vapour transmission (~3–10+ lbs/1000 sq ft/24 hrs, ASTM F1869) and chemical permeation can lead to blistering, delamination, and loss of containment performance if not properly addressed.
Industrial-grade containment systems typically incorporate moisture-tolerant epoxy primers, high-build 100% solids epoxy or epoxy mortar base layers (3–6 mm+), and chemical-resistant topcoats such as novolac epoxy for superior resistance to hydrocarbons, acids, and solvents. These systems are designed to form dense, impermeable barriers with compressive strengths exceeding 10,000 psi, supporting compliance with spill containment and environmental protection requirements. Integral cove bases (4"–6") and seamless transitions eliminate joints and weak points, ensuring full containment and long-term system reliability in high-risk industrial environments.
We provide secondary containment coating services throughout Toronto and the Greater Toronto Area, including Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Milton, Pickering, Ajax, Whitby, Oshawa, and surrounding industrial zones. Every installation is tailored to chemical exposure levels, containment requirements, and regulatory expectations, ensuring long-term performance in high-risk industrial environments.
Request a Free Epoxy Flooring Consultation
Tell us about your project and we’ll recommend the right system—no guesswork, no one-size-fits-all solutions.
✔ 20+ Years of Epoxy Flooring Experience
✔ Residential, Commercial and Industrial Expertise
✔ Industrial-Grade Surface Preparation
✔ Moisture Testing & Mitigation Systems
✔ Premium Epoxy & Coating Systems
✔ Built for Local Climate Conditions
✔ Durable, Long-Lasting Element-Resistant Flooring
✔ Custom-Tailored Flooring Solutions
We’ll contact you within 24 hours to review your project and next steps.
We look forward to learning more about your project and helping you get the right flooring system in place.
Secondary Containment Coatings Applications
Secondary containment coating systems are engineered for environments where hazardous liquids must be fully contained without permeation into the substrate or surrounding environment. These areas are exposed to acids, caustics, solvents, and fuels, requiring impermeable, chemically resistant flooring capable of maintaining containment integrity under continuous exposure. High-build 100% solids epoxy, epoxy mortar, and novolac systems are commonly specified to achieve compressive strengths exceeding 10,000 psi, low permeability, and long-term resistance to chemical attack, thermal stress, and mechanical wear.
Chemical Storage Areas & Drum Containment Zones
Areas storing acids, alkalis, and industrial chemicals require flooring systems that prevent absorption and migration into the concrete substrate. High-build epoxy and novolac systems (typically 3–6 mm+) provide dense, non-porous barriers that resist chemicals such as sulfuric acid, hydrochloric acid, and sodium hydroxide. Seamless finishes eliminate pathways for leakage, maintaining containment integrity in high-risk storage environments.
Tank Farms, Bulk Storage & Bunded Containment Areas
Tank farms and bunded containment zones must meet liquid-tight performance requirements to capture spills from bulk storage vessels. Epoxy mortar and novolac systems are used to withstand prolonged chemical exposure while maintaining structural durability. Integral cove bases and vertical terminations are installed to create continuous containment barriers capable of holding spilled liquids without seepage.
Loading, Unloading & Transfer Areas
Chemical transfer zones are subject to frequent spills, splashes, and mechanical traffic from forklifts and transport equipment. Broadcast epoxy systems with quartz or aluminum oxide aggregates enhance abrasion resistance and traction while maintaining chemical resistance. These systems are designed to prevent surface erosion and maintain containment performance under repeated operational stress.
Process Areas & Chemical Handling Zones
Industrial processing areas involving mixing, batching, or chemical handling require flooring systems that resist both chemical exposure and equipment wear. High-build epoxy systems combined with chemical-resistant topcoats provide a durable, impermeable surface that withstands continuous exposure to aggressive substances while maintaining cleanability and surface integrity.
Washdown, Spill Response & Decontamination Areas
Areas subject to frequent washdowns and spill cleanup require coatings that maintain adhesion under wet conditions and repeated chemical exposure. Novolac epoxy and urethane systems are specified for their resistance to solvents and cleaning agents, preventing osmotic blistering, coating breakdown, and moisture-related failure while ensuring long-term containment performance.
Benefits of Secondary Containment Coatings
Secondary containment coating systems are engineered for environments exposed to hazardous chemical spills, leaks, and continuous industrial use. Unlike standard industrial coatings, these systems must form fully impermeable barriers that prevent chemical migration into concrete while maintaining structural integrity under prolonged exposure. High-performance systems such as high-build 100% solids epoxy, epoxy mortar, and novolac coatings are used to create dense, liquid-tight surfaces that resist chemical attack, mechanical wear, and environmental degradation in regulated containment areas.
Secondary Containment Coatings Systems
Secondary containment areas require coating systems engineered to prevent chemical penetration, contain hazardous liquids, and maintain structural integrity under continuous exposure. These systems are installed as seamless, multi-layer builds incorporating mechanical surface preparation (typically CSP 3–5), moisture-tolerant epoxy primers, high-build epoxy or epoxy mortar base layers, and chemically resistant topcoats. System specifications are driven by chemical type, exposure duration, containment requirements, and regulatory standards to ensure long-term impermeability and environmental protection.
High-Build Epoxy & Epoxy Mortar Systems for Containment Integrity
High-build 100% solids epoxy and epoxy mortar systems are typically installed at 2–6 mm+ to create dense, load-bearing, and impermeable surfaces. In secondary containment environments, these systems deliver compressive strengths exceeding 10,000–14,000 psi, preventing substrate deterioration while maintaining structural stability under static loads, equipment traffic, and prolonged chemical exposure.
Novolac Epoxy Systems for Aggressive Chemical Resistance
In areas exposed to concentrated acids, caustics, solvents, and fuels, novolac epoxy systems are specified for their high cross-link density and superior resistance to chemical attack. These systems withstand exposure to substances such as sulfuric acid, hydrochloric acid, sodium hydroxide, and hydrocarbons without softening, staining, or long-term degradation, maintaining containment performance over time.
Broadcast Aggregate Systems for Abrasion & Slip Resistance
Quartz or aluminum oxide broadcast systems are incorporated into epoxy builds to improve surface hardness and wear resistance in areas with forklift traffic and maintenance activity. Installed at approximately 3–4 mm, these systems provide additional durability while maintaining a surface profile that supports traction in spill-prone environments.
Moisture-Tolerant Primer Systems (MVT Control)
Concrete substrates in containment areas can transmit moisture vapour (~3–10+ lbs/1000 sq ft/24 hrs, ASTM F1869), which can compromise coating adhesion. Moisture-tolerant epoxy primers are applied where required to control vapour transmission and prevent osmotic blistering, delamination, and bond failure beneath sealed containment systems.
Chemical-Resistant Topcoat Systems
Protective topcoats are applied at approximately 6–12 mils using chemical-resistant epoxy, polyurethane, or polyaspartic coatings to enhance resistance to solvents, acids, and caustic solutions. These layers provide additional protection against surface degradation while maintaining a sealed, impermeable finish required for secondary containment performance.
Seamless Integration, Joint Sealing & Containment Continuity
Control joints, cracks, and transitions are treated using epoxy fillers or polyurea joint systems to eliminate leakage pathways. Seamless system integration across floors, cove bases, and vertical surfaces ensures continuous containment barriers, preventing chemical migration and maintaining long-term performance in high-risk industrial environments.
Secondary Containment Coatings Layers & Materials
Secondary containment coating systems are installed as engineered, multi-layer builds designed to prevent chemical permeation and maintain liquid-tight performance under continuous exposure. These systems are constructed to resist acids, caustics, solvents, and hydrocarbons while protecting concrete substrates from absorption and degradation. System design is driven by chemical type, concentration, exposure duration, and regulatory containment requirements to ensure long-term impermeability, adhesion, and environmental protection.
1. Surface Preparation & Concrete Profiling (CSP)
Concrete is mechanically prepared to remove contaminants and achieve the required surface profile for proper adhesion. (see more details in Surface Preparation section)
2. Moisture-Tolerant Primer & Chemical Barrier Layer
A two-component moisture-tolerant epoxy primer is applied at approximately 6–12 mils to penetrate and seal the concrete substrate while establishing a high-strength bond. In containment environments where slabs may exhibit moisture vapour transmission (~3–10+ lbs/1000 sq ft/24 hrs, ASTM F1869), primers are specified to prevent osmotic blistering and adhesion loss. This layer also functions as an initial chemical barrier, reducing the risk of contaminant migration beneath the coating system.
3. Base Layer (High-Build Epoxy, Novolac Epoxy, or Epoxy Mortar)
The base layer provides primary containment performance and chemical resistance. High-build 100% solids epoxy systems are typically installed at 2–4 mm to create dense, non-porous surfaces that prevent liquid penetration. In areas exposed to aggressive chemicals such as sulfuric acid, hydrochloric acid, sodium hydroxide, and solvents, novolac epoxy systems are specified for their superior resistance to chemical attack. Where higher durability or substrate restoration is required, epoxy mortar systems installed at 3–6 mm+ deliver compressive strengths exceeding 10,000–14,000 psi while maintaining dimensional stability under prolonged exposure.
4. Functional Layer (Containment Integrity, Chemical Resistance & Slip Control)
Functional system components are integrated to enhance containment performance and surface durability. Broadcast systems using quartz or aluminum oxide aggregates are applied within the epoxy matrix to improve abrasion resistance in areas with maintenance traffic. Surface profiles are engineered to maintain slip resistance in spill-prone zones while preserving a dense, cleanable surface that does not compromise impermeability or containment integrity.
5. Protective Topcoat & Long-Term Containment Performance Layer
Protective topcoats are applied at approximately 6–12 mils using chemical-resistant epoxy, novolac, or polyurethane systems to enhance resistance to acids, caustics, solvents, and hydrocarbons. These layers create a sealed, impermeable surface that resists staining, chemical degradation, and surface wear. The result is a continuous containment barrier that maintains adhesion, prevents liquid intrusion, and supports long-term performance in regulated industrial environments.
Secondary Containment Coatings Surface Preparation
Secondary containment environments require concrete preparation processes engineered to achieve liquid-tight performance, chemical resistance, and long-term adhesion under continuous exposure. Floors are routinely subjected to acids, caustics, solvents, and hydrocarbons that can penetrate untreated concrete and compromise containment integrity. Proper surface preparation ensures the substrate develops the required bond strength, eliminates chemical contamination, and supports seamless resinous systems designed to meet spill containment and environmental protection requirements.
1. Mechanical Grinding & Concrete Surface Profiling (CSP)
Concrete is mechanically prepared using industrial diamond grinding or shot blasting to achieve the required concrete surface profile (CSP 3–5 for high-build coatings, CSP 4–6 for epoxy mortar systems). This process removes laitance, curing compounds, and embedded contaminants while opening the pore structure for mechanical interlock. Target substrate compressive strength is typically ≥3,500–5,000 psi, with pull-off adhesion values of ≥250–350 psi after preparation to ensure coating performance in containment applications.
2. Removal of Chemical Residues, Oils & Embedded Contaminants
Containment areas are frequently exposed to aggressive chemicals that penetrate the concrete matrix. Residues from acids, alkalis, fuels, and solvents must be fully removed using mechanical grinding, industrial degreasing, and where required, chemical neutralization. Any remaining contamination acts as a bond breaker, increasing the risk of osmotic blistering, coating delamination, and loss of containment integrity under prolonged chemical exposure.
3. Removal of Existing Coatings & Substrate Correction
Existing coatings, sealers, and failed systems must be completely removed to expose sound concrete. Surface defects such as cracking, spalling, joint edge deterioration, and chemical erosion are repaired using epoxy patching compounds or chemical-resistant epoxy mortar systems. In deteriorated areas, localized resurfacing at 3–6 mm+ may be required to restore substrate integrity and create a uniform, defect-free surface suitable for liquid-tight containment systems.
4. Surface Leveling, Drainage Control & Containment Detailing
Containment systems require precise surface geometry to prevent pooling and ensure controlled liquid management. Grinding, leveling, and localized resurfacing are performed to eliminate irregularities, joints, and transitions that can compromise containment. Where required, slope-to-drain systems (typically 1–2%) are incorporated, and integral cove transitions are prepared to support seamless vertical terminations and continuous containment barriers.
5. Moisture Evaluation, Vapour Control & Final Conditioning
Concrete slabs are evaluated for moisture vapour transmission using ASTM F2170 (in-situ RH) or ASTM F1869 (calcium chloride), with typical levels ranging from ~3–10+ lbs/1000 sq ft/24 hrs. Moisture-tolerant epoxy primers are applied where required to prevent osmotic blistering, adhesion loss, and coating failure beneath sealed systems. Final preparation includes industrial vacuuming and controlled cleaning to ensure a dust-free, contaminant-free substrate ready for high-performance containment coatings.
Effective surface preparation in secondary containment environments focuses on achieving a structurally sound, chemically clean substrate with consistent surface profile and bond strength. When executed to specification, the system forms a continuous, impermeable barrier that resists chemical intrusion, maintains containment integrity, and performs reliably in high-risk industrial applications.
Why Secondary Containment Coatings Systems Fail
Secondary containment coating systems are exposed to continuous chemical contact, liquid immersion, and environmental stress. Failures rarely result from a single issue—most occur when surface preparation, system chemistry, or build thickness does not align with chemical exposure levels and containment requirements. In high-risk environments, even minor deficiencies can lead to coating breakdown, loss of impermeability, and compromised spill containment performance.
1. Inadequate Surface Preparation & Chemically Contaminated Substrates
Failure to achieve the correct concrete surface profile (CSP 3–5 for coatings, CSP 4–6 for mortar systems) prevents proper mechanical bonding. Containment slabs are often saturated with acids, caustics, solvents, or hydrocarbons that penetrate deep into the concrete matrix. If not fully removed or neutralized, these contaminants act as bond breakers, leading to delamination, blistering, and chemical infiltration beneath the coating. Substrates below ~3,500–5,000 psi compressive strength or with pull-off adhesion under ~250–350 psi are highly susceptible to premature failure in containment environments.
2. Chemical Exposure & Permeation-Induced Degradation
Secondary containment areas are routinely exposed to aggressive substances such as sulfuric acid, hydrochloric acid, sodium hydroxide, and solvents. Standard epoxy systems without novolac or chemical-resistant formulations can soften, stain, or degrade under prolonged exposure. Continuous chemical contact accelerates resin breakdown and increases permeability, allowing hazardous liquids to migrate through the coating and compromise containment integrity.
3. Moisture Vapour Transmission, Chemical Saturation & Substrate Movement
Concrete slabs can transmit moisture vapour (~3–10+ lbs/1000 sq ft/24 hrs, ASTM F1869), creating pressure beneath impermeable coatings that leads to blistering, bubbling, and bond loss. In containment areas, prolonged liquid exposure and chemical saturation further stress the coating system. Temperature fluctuations and slab movement introduce additional strain, resulting in cracking, joint failure, or localized coating separation if not properly mitigated.
4. Improper System Design & Insufficient Build Thickness
Thin-film coatings below ~15–20 mils are not suitable for secondary containment applications requiring impermeability and chemical resistance. Containment systems typically require high-build epoxy at 2–4 mm or epoxy mortar at 3–6 mm+ to maintain a continuous, liquid-tight barrier. Systems lacking sufficient thickness, chemical resistance, or reinforcement fail prematurely, leading to permeability, surface erosion, and localized breakdown in high-exposure zones.
Long-term containment performance depends on aligning system design with chemical exposure, substrate condition, and regulatory requirements. When substrates are properly prepared, contaminants are eliminated, and systems are specified with appropriate chemistry and build thickness, secondary containment coatings maintain impermeability, resist chemical attack, and perform reliably in demanding industrial environments.
Our Secondary Containment Coatings Installation Process
Secondary containment coating installations are engineered around chemical exposure levels, spill containment requirements, and regulatory performance standards. Containment slabs must resist acids, caustics, solvents, and hydrocarbons while maintaining a liquid-tight barrier under continuous exposure. Proper execution ensures the system delivers long-term impermeability, chemical resistance, and adhesion under moisture vapour transmission and environmental stress.
Step 1: Site Evaluation & System Planning
We assess chemical storage conditions, containment volume requirements, and exposure types, including acids, solvents, and fuels. The concrete substrate is evaluated for compressive strength (typically ≥3,500–5,000 psi), surface integrity, and chemical contamination. Moisture vapour transmission is tested using ASTM F2170 (in-situ RH) or ASTM F1869 (calcium chloride). Chemical concentration, exposure duration, and regulatory requirements determine system selection and build thickness—typically 2–4 mm for high-build epoxy or 3–6 mm+ for epoxy mortar and novolac systems in high-exposure containment zones.
Step 2: Surface Preparation & Contamination Removal
Concrete is mechanically prepared using industrial diamond grinding or shot blasting to achieve CSP 3–5 for coatings and CSP 4–6 for mortar systems. Chemical residues, oils, and embedded contaminants are removed through mechanical grinding, degreasing, and, where required, chemical neutralization to eliminate bond-breaking substances. Existing coatings, laitance, and weak surface layers are fully removed. Cracks, spalls, and joint deterioration are repaired using epoxy patching compounds or chemical-resistant mortar systems, producing a structurally sound substrate capable of achieving pull-off adhesion values of ≥250–350 psi.
Step 3: System Installation
A moisture-tolerant epoxy primer is applied at approximately 6–12 mils to establish adhesion and control vapour-related risks. High-build 100% solids epoxy systems are installed at 2–4 mm for general containment areas, while novolac epoxy or epoxy mortar systems (3–6 mm+) are used in zones exposed to aggressive chemicals. Seamless integration includes cove bases (4"–6") and vertical terminations to create a continuous containment barrier. Broadcast aggregates may be incorporated where required to enhance durability without compromising impermeability. Protective topcoats are applied at 6–12 mils to provide additional chemical resistance and surface protection.
Step 4: Curing, Inspection & Return to Operation
Curing is controlled based on system chemistry and environmental conditions to achieve full cross-linking and chemical resistance. Once cured, the system is inspected for adhesion, uniform thickness, and continuity of the containment barrier. Critical areas—including joints, penetrations, and vertical transitions—are verified to ensure liquid-tight performance. Where required, installations are phased to maintain operational continuity while ensuring containment areas meet performance and regulatory expectations before return to service.
Successful containment coating installations depend on aligning substrate preparation, system chemistry, and build thickness with chemical exposure and containment requirements. When each phase is executed to specification, the result is a seamless, impermeable system that prevents chemical migration, maintains structural integrity, and performs reliably in high-risk industrial environments.
Secondary Containment Coatings FAQs
Are epoxy coatings suitable for secondary containment areas?
Yes. High-performance epoxy and resinous systems are specifically engineered to create impermeable, liquid-tight barriers required for secondary containment. These systems prevent chemical absorption into concrete and are designed to meet containment performance expectations in environments handling hazardous liquids.
Can containment coatings withstand acids, caustics, solvents, and fuels?
Yes. Novolac epoxy and chemical-resistant systems are formulated to resist aggressive substances such as sulfuric acid, hydrochloric acid, sodium hydroxide, and hydrocarbons. These coatings maintain integrity under prolonged exposure without softening, permeation, or chemical breakdown.
Are these systems suitable for continuous chemical exposure and industrial use?
Yes. High-build epoxy and epoxy mortar systems (typically 2–6 mm+) provide compressive strengths exceeding 10,000 psi and are designed for continuous exposure conditions. They maintain containment performance under static loads, maintenance traffic, and repeated chemical contact.
How are joints, cracks, and containment details handled?
Cracks, joints, and penetrations are treated using epoxy fillers, chemical-resistant mortars, or polyurea joint systems to eliminate leakage pathways. Integral cove bases (4"–6") and seamless vertical transitions are installed to ensure continuous containment and prevent chemical migration.
Are containment coatings slippery in spill-prone environments?
Not when properly specified. Slip-resistant aggregates such as quartz or aluminum oxide can be incorporated to improve traction in wet or chemical-exposed areas while maintaining a dense, cleanable surface.
How long do secondary containment coatings last?
When properly installed and maintained, containment systems typically last 10–20 years depending on chemical exposure, system thickness, and operating conditions. High-exposure zones may require periodic inspection and localized maintenance.
Can installation be completed without disrupting operations?
Yes. Installations can be phased, and fast-curing systems such as polyaspartic topcoats allow reduced downtime, enabling containment areas to return to service efficiently while maintaining performance standards.
Can different containment areas use different coating systems?
Yes. Systems are engineered based on chemical type, concentration, and exposure conditions. Storage areas, tank containment zones, and transfer areas may require different system chemistries and thicknesses, ensuring each area achieves required containment performance without overbuilding the entire facility.
Have questions about secondary containment coatings? Request a free on-site assessment and we’ll evaluate chemical exposure levels, containment requirements, and substrate conditions to recommend a system engineered for long-term, compliant performance.
Request a Free Epoxy Flooring Consultation
Tell us about your project and we’ll recommend the right system—no guesswork, no one-size-fits-all solutions.
✔ 20+ Years of Epoxy Flooring Experience
✔ Residential, Commercial and Industrial Expertise
✔ Industrial-Grade Surface Preparation
✔ Moisture Testing & Mitigation Systems
✔ Premium Epoxy & Coating Systems
✔ Built for Local Climate Conditions
✔ Durable, Long-Lasting Element-Resistant Flooring
✔ Custom-Tailored Flooring Solutions
We’ll contact you within 24 hours to review your project and next steps.
We look forward to learning more about your project and helping you get the right flooring system in place.