Belzona 5115
High-Gloss Tintable Topcoat
High-gloss, 100% solids and tintable topcoat for protection against corrosion and weathering.
A two-component, high-gloss, 100% solids epoxy-polysiloxane hybrid topcoat for long-term protection of metallic and non-metallic surfaces against weathering, corrosion, and chemical attack.
- SeriesBelzona 5000 Series
- Approvals1
- Documents5
Overview of Belzona 5115
Belzona 5115 is a two-component, high-gloss, and 100% solids top coating designed for the long-term protection of metallic and non-metallic surfaces against weathering, corrosion, and chemical attack. It can be applied by brush or spray in a single coat, ensuring quick coverage for both small and large areas.
This coating provides excellent exterior gloss and color retention, scratch and impact resistance, and can be tinted to meet specific industrial color requirements.
Key Benefits
Engineered for demanding performance requirements
No solvents, no shrinkage during cure
Applied by brush or spray for fast and efficient coverage
Excellent UV and environmental weathering resistance for outdoor exposure
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Ships & Maritime Structures
4 applicationsValves, Pipes & Fittings
1 applicationTechnical Data
Mixed Properties (at 72°F / 22°C)
- Viscosity (White)
- 3.0 - 4.0 P
- Viscosity (Gray)
- 1.5 - 2.0 P
- VOC Content (White)
- 6.64% (88.73 g/L)
- VOC Content (Gray)
- 5.52% (72.85 g/L)
- Density
- 1.32 - 1.33 g/cm³
- Sagging Resistance (White)
- 6 mil (150 μm)
- Sagging Resistance (Gray)
- 5 mil (125 μm)
Coverage
- Wet Film Thickness per Coat
- 3.0 mil (75 μm)
- Dry Film Thickness per Coat
- 2.7 mil (68 μm)
- Theoretical Coverage Rate per Coat
- 140 ft²/L (13 m²/L)
- Maximum Total WFT (2 coats)
- 8.0 mil (200 μm)
Mechanical Properties
- Sliding Abrasion (ASTM D4060, CS17, 1 kg, 7 days at 72°F)
- 55 mm³ loss per 1,000 cycles
- Impact Resistance (ASTM D2794) at 68°F (20°C)
- 9 in.lb (0.10 kg.m)
- Impact Resistance at 86°F (30°C)
- 9 in.lb (0.10 kg.m)
- Impact Resistance at 104°F (40°C)
- 6 in.lb (0.07 kg.m)
Hardness
- König Pendulum (ISO 1522, 7 days at 72°F, 50% RH)
- 133 s
- König Pendulum (40 days at 72°F, 50% RH)
- 169 s
- Pencil Hardness (ASTM D3363) Gouge
- 7H
- Pencil Hardness Scratch
- 7H
Adhesion (ASTM D4541/ISO 4624 over SSPC-SP 11, 14 days cure)
- Aluminum
- 2,200 psi (15.2 MPa)
- Belzona 5811
- 2,932 psi (20.2 MPa)
- Belzona 6111
- 3,000 psi (20.7 MPa)
- Carbon Steel
- 3,860 psi (26.6 MPa)
- Vinyl Ester FRP
- 1,100 psi (7.6 MPa)
- Epoxy FRP
- 3,700 psi (25.5 MPa)
- Crosshatch (ASTM D3359 Method B)
- 5B (no detachment)
Corrosion & Weathering
- Salt Spray (ASTM B117-19)
- No rusting, blistering or flaking after 2,000 hours
- Accelerated Weathering (ISO 16474-3, 1,000 hours UVA)
- No color change, cracking, flaking or rusting
- Initial Specular Gloss (60°)
- 85.7 GU (UVA), 93.9 GU (UVB)
Heat Resistance
- Glass Transition Temperature (Tg)
- 237°F (114°C) after 30 days at 72°F, 50% RH
- Dry Heat Resistance
- Stable up to 212°F (100°C)
- Low Temperature
- Stable down to -40°F (-40°C)
Approvals
- FDA
- Meets 21 CFR 175.300 for a broad range of food types in Conditions of Use E and F
Working Life
From commencement of mixing, use material within: Working life can be doubled if a lid is applied to the mixed product container while not in use.
- 41°F (5°C)
- 5 hours
- 50°F (10°C)
- 4 hours
- 68°F (20°C)
- 3 hours
- 86°F (30°C)
- 2 hours
- 104°F (40°C)
- 1 hour
Overcoat Times
Up to 68°F (20°C)
- <50% RH
- 6 hours
- >50% RH
- 4 hours
Up to 86°F (30°C)
- <50% RH
- 4 hours
- >50% RH
- 2 hours
Up to 104°F (40°C)
Maximum overcoat time is 72 hours.
- <50% RH
- 2 - 4 hours
- >50% RH
- 1 - 2 hours
Full Cure Times (days)
At 59°F (15°C)
- 30% RH
- 35 days
- 50% RH
- 32 days
- 70% RH
- 30 days
At 68°F (20°C)
- 30% RH
- 11 days
- 50% RH
- 9 days
- 70% RH
- 8 days
At 86°F (30°C)
- 30% RH
- 8 days
- 50% RH
- 7 days
- 70% RH
- 6 days
At 104°F (40°C)
- 4 days at all humidity levels
Post Curing
Post-cure is required when the temperature is below 59°F (15°C) regardless of relative humidity. Heat the coating to between 104°F (40°C) and 122°F (50°C) for a minimum of 24 hours using forced dry air heaters or heat lamps.
Service Temperature Limits
- Application Temperature Range
- 41°F to 104°F (5°C to 40°C)
- Lower Service Temperature
- -40°F (-40°C)
- Upper Service Temperature (Dry)
- 212°F (100°C)
- Glass Transition Temperature (Tg)
- 237°F (114°C)
Mixing & Application
Certifications & Approvals
Product PDFs
Gallery
Frequently Asked Questions
What is Belzona 5115 used for?
Belzona 5115 is a high-gloss, 100% solids, tintable epoxy-polysiloxane hybrid topcoat for the long-term protection of metallic and non-metallic surfaces against weathering, corrosion, and chemical attack. Typical applications include bridges, cooling towers, walls and floors, marine structures, offshore platform topsides, piping, structural steelwork, tanks, fan blades, and wind turbines. It is ideal for top coating other Belzona products such as Belzona 5811, Belzona 5815, and Belzona 3921 to retain exterior gloss and color.
Can Belzona 5115 be tinted to custom colors?
Yes. Belzona 5115 is available in white, gray, and a neutral version designed for tinting to custom industrial finish colors. Belzona recommends Chroma-Chem UCD® PS line of colorants for use with the neutral version. As a guide, 2-6% by volume of colorant per total volume should be sufficient for an optimum color. The colorant should be added to the base first and thoroughly mixed before transferring the contents of the solidifier into the base. When coating over a dark color with a light tint, an initial coat of Belzona 5115 (White) is recommended to lighten the underlying coating.
How long does Belzona 5115 take to cure?
Full cure time depends on temperature and relative humidity. At 68°F (20°C) and 50% RH, full cure is achieved in approximately 9 days. At 86°F (30°C) and 50% RH, full cure occurs in 7 days. At 104°F (40°C), full cure is achieved in 4 days regardless of humidity. Below 59°F (15°C), post-curing is required using forced dry air heaters or heat lamps at 104°F to 122°F (40°C to 50°C) for a minimum of 24 hours. Working life of mixed material ranges from 5 hours at 41°F (5°C) to 1 hour at 104°F (40°C).
Related Products
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