Belzona 4151
Magma-Quartz Resin
A two-component, solvent-free epoxy resin used as primer and base for Belzona 4111 and 4131 systems.
A two-component, solvent-free epoxy resin used as a primer, sealer, and resin component for Belzona 4111 (Magma-Quartz) and Belzona 4131 (Magma-Screed) concrete repair systems.
- SeriesBelzona 4000 Series
- Approvals1
- Documents4
Overview of Belzona 4151
Belzona 4151 (Magma-Quartz Resin) is the two-component, solvent-free epoxy resin system at the core of the Belzona 4111 (Magma-Quartz) repair compound. Supplied separately, the resin functions as a primer, sealer, and substrate conditioner for concrete and stonework prior to application of Belzona 4111 (Magma-Quartz) and Belzona 4131 (Magma-Screed) systems.
Brush-applied directly onto prepared substrates, Belzona 4151 penetrates and seals porous concrete to provide a strong bond layer for subsequent overcoats. Coverage of approximately 205 sq.ft. (19 m²) per 6 kg unit allows efficient priming of large floor and wall areas. The 100% solids, solvent-free formulation makes it suitable for confined spaces and applications where solvent emissions are restricted.
Key Benefits
No solvents, no shrinkage during cure
100% solids formulation reduces health and safety risks in confined spaces with no shrinkage on cure
Bonds strongly to virtually any rigid surface
Easy to mix and apply without specialist tools
No mixing required - applied directly from the container by brush or roller
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Floor Problem Areas
3 applications- Concrete coating surface primersSubstrate primer ahead of Belzona 4000 Series concrete repair compoundsLearn more
- General sealing & bonding resinStandalone two-component epoxy resin for sealing and bonding applicationsLearn more
- Anti-slip aggregate broadcastingField application by broadcasting into wet Belzona 5811 (Immersion Grade) coatingsLearn more
Technical Data
Composition
- Type
- Two-component, solvent-free epoxy resin (resin component for Belzona 4111 and 4131 systems)
- Mixing Ratio by Weight (Base : Solidifier)
- 2.4 : 1
- Mixing Ratio by Volume (Base : Solidifier)
- 2 : 1
- Mix Time
- 2 minutes for small quantities; 3 minutes for full unit mixing
Application
- Application Method
- Good quality brush — apply directly from mixing vessel
- Coverage Rate (practical)
- 205 sq.ft. (19 m²) per 6 kg unit
- Volume Capacity
- 334 cu.in. (5,470 cm³) per 6 kg unit
- Vertical Surface Film Thickness Limit
- 5 mil (125 microns) max to avoid sagging
Working Life
- 41°F (5°C)
- 45 minutes
- 50°F (10°C)
- 32 minutes
- 59°F (15°C)
- 25 minutes
- 68°F (20°C)
- 16 minutes
- 77°F (25°C)
- 12 minutes
- Important
- Do NOT mix complete units and leave to stand — the large exotherm produced will significantly reduce usable life
Cure Times — Working Surface Conditions
- 41°F (5°C)
- Pedestrian traffic 16 hours / Full mechanical hardness 2 days / Full chemical resistance 14 days
- 59°F (15°C)
- Pedestrian traffic 6 hours / Full mechanical hardness 24 hours / Full chemical resistance 10 days
- 77°F (25°C)
- Pedestrian traffic 4 hours / Full mechanical hardness 16 hours / Full chemical resistance 5 days
- Critical
- Belzona 4151 must NOT be exposed to moisture until full cure has been achieved — surface whitening will occur
Overcoat Window
- Self-overcoat (second coat)
- Apply within 2 hours of first coat without disturbing it
- Overcoat with Belzona 4111 or 4131
- Within 48 hours; if exceeded, surface must be thoroughly abraded and contamination removed
- Large applications
- Use Belzona 4911 (Magma TX Conditioner) instead of first coat of 4151. Apply 4151 within 6 hour max overcoat window
Application Conditions — Do NOT Apply When
- Temperature is below 41°F (5°C) or relative humidity is above 90%
- Rain, snow, fog, or mist is present
- Surface moisture is present or condensation risk exists
- Working environment may be contaminated with oil/grease, kerosene heater smoke, or tobacco smoke
Cleaning
- Mixing tools
- Belzona 9111 (Cleaner/Degreaser) or MEK
- Brushes, injection guns, spray equipment
- Belzona 9121, MEK, acetone, or cellulose thinners
Shelf Life
- Separate Base and Solidifier components have a 5-year shelf life from date of manufacture in original unopened containers
Working Life
From commencement of mixing, use within:
- 41°F (5°C)
- 45 minutes
- 50°F (10°C)
- 32 minutes
- 59°F (15°C)
- 25 minutes
- 68°F (20°C)
- 16 minutes
- 77°F (25°C)
- 12 minutes
Curing Time
Allow Belzona 4151 to solidify before subjecting it to the conditions indicated:
At 41°F (5°C)
- Resist pedestrian traffic
- 16 hours
- Full mechanical hardness
- 2 days
- Full chemical resistance
- 14 days
At 59°F (15°C)
- Resist pedestrian traffic
- 6 hours
- Full mechanical hardness
- 24 hours
- Full chemical resistance
- 10 days
At 77°F (25°C)
Belzona 4151 must not be exposed to moisture until full cure has been achieved or surface whitening will occur.
- Resist pedestrian traffic
- 4 hours
- Full mechanical hardness
- 16 hours
- Full chemical resistance
- 5 days
Service Temperature Limits
- Application Temperature Range
- 41°F (5°C) and above — do not apply when temperature is below 41°F or relative humidity is above 90%
- Application Restrictions
- Do not apply during rain, snow, fog, or mist; ensure no surface moisture or risk of condensation
- Storage Temperature
- 32°F (0°C) to 86°F (30°C) in unopened containers
- Service temperatures depend on the overcoat (Belzona 4111 or 4131) used
Certifications & Approvals
Product PDFs
Gallery
Frequently Asked Questions
What is Belzona 4151 (Magma-Quartz Resin) used for?
Belzona 4151 (Magma-Quartz Resin) is a fast-curing 2-part epoxy resin designed for the protection of concrete, stone, and metallic surfaces. It is also used as the resin component for Belzona 4111 (Magma-Quartz) and Belzona 4131 (Magma-Screed) repair systems, and is ideal for grouting, bonding, and crack injection.
What is the mixing ratio of Belzona 4151 (Magma-Quartz Resin)?
The mixing ratio of Belzona 4151 (Magma-Quartz Resin) is 2.4 : 1 (Base : Solidifier) by weight and 2 : 1 (Base : Solidifier) by volume. Please see the Product Specification Sheet (PSS) for more information.
How do you apply Belzona 4151 (Magma-Quartz Resin)?
To apply Belzona 4151 (Magma-Quartz Resin), the surface must be clean, firm, and dry, free of any oils, paint, or contaminants, and conditioned with Belzona 4911 (Magma TX Conditioner). Empty the contents of the Solidifier into the Base and mix thoroughly until a homogeneous liquid is achieved. Apply to the conditioned surface using a brush, roller, or short-bristled brush. A second coat may be applied as soon as the first coat is firm enough to walk on. Please see the Instructions for Use (IFU) for more information.
Related Products
Need Belzona 4151 applied
on your asset?
Our Louisiana team supplies and applies it — with 24-hour support, no shutdown, no hot work.