Sika MonoTop®-3020
Sika MonoTop®-3020 is a one-part, cementitious polymer modified, low shrinkage smoothing mortar for an application thickness of 1–5 mm. It contains supplementary cementitious materials.
- Contains supplementary cementitious material
- Cleaner job site due to dust-reduced formulation
- Easy to apply by hand or machine (wet spray technique)
- Layer thickness 1–5 mm
- Can be applied vertically, horizontally and overhead
- Very good workability
- Durable surface finishing
- Minimized cracking sensitivity
- Sulphate-resistant
- Very good resistance to water and chloride penetration
- Exceeds the class R3 requirements of EN 1504-3
- Compatible with Sikagard® overcoat systems
- A1 fire rating
Usage
Sika MonoTop®-3020 is used for:- Producing a thin-layer fairing coat that meets the class R3 requirements of EN 1504-3
- Concrete pore filler and levelling mortar
- Repairing minor concrete defects (pores and honeycombed concrete)
- Restoration work (Principle 3, method 3,1 and 3,3 of EN 1504-9). Repair of spalling and damaged concrete in infrastructure and superstructure works.
- Preserving or restoring passivity (Principle 7, method 7,1 and 7,2 of EN 1504-9). Increasing cover with additional mortar and replacing contaminated or carbonated concrete
- Concrete exposure classes XC 1-4, XF 1-4, XD 1-3, XS 1-3 and XA 1-2 as described in EN 206
- The Product may only be used by experienced professionals.
Advantages
- Contains supplementary cementitious material
- Cleaner job site due to dust-reduced formulation
- Easy to apply by hand or machine (wet spray technique)
- Layer thickness 1–5 mm
- Can be applied vertically, horizontally and overhead
- Very good workability
- Durable surface finishing
- Minimized cracking sensitivity
- Sulphate-resistant
- Very good resistance to water and chloride penetration
- Exceeds the class R3 requirements of EN 1504-3
- Compatible with Sikagard® overcoat systems
- A1 fire rating
Packaging
Standard bag | 25 kg |
Refer to the current price list for available packaging variations.
Colour
Grey
Product Details
ENVIRONMENTAL INFORMATION
Contributes towards satisfying Materials and Resources (MR) Credit: Building Product Disclosure and Optimization — Material Ingredients under LEED® v4 — 1 point
LEED Attestation, Sika MonoTop-3020, Eurofins, Test Report No. 392-2025-00352802_H_EN
Specific Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by BRE Global
APPROVALS / STANDARDS
CE marking and declaration of performance based on EN 1504-3:2005 Products and systems for the protection and repair of concrete structures — Structural and non-structural repair
CDPH, Sika MonoTop-3020, Eurofins, Test Report No. 392-2025-00352802_H_EN
eurofins VOC Emission Test Sika MonoTop-3020
Hartl Sulphate Resistance ÖNORM B 3309-1 Sika MonoTop-3020
Resistance to sea water NF P 18-837, SikaGrout®-800 ES and Sika MonoTop®-3020, Sika Spain, Test Report No. DE 22-035
Chemical Base
Cement, cement replacement, selected aggregates, additives and polymers
Shelf Life
Standard bag | 12 months from date of production |
Storage Conditions
The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +35 °C. Protect the Product from direct sunlight. Always refer to the packaging.
Refer to the current Safety Data Sheet for information on safe handling and storage.
Product Declaration
Complies with the general requirements of EN 1504-3: Class R3.
Maximum Grain Size
0.4 mm
Soluble Chloride Ion Content
≤ 0.05 % | (EN 1015-17) |
System Structure
Sika MonoTop®-3020 is the optional smoothing coat of the Sika® repair system. It is applied on top of the concrete repair mortar.
Compressive Strength
1 day | 10 MPa |
3 days | 17 MPa |
7 days | 24 MPa |
28 days | 34 MPa |
Modulus of Elasticity in Compression
Cured 28 d at +21 °C | ≥ 15 GPa |
Flexural Strength
28 days | 8 MPa |
Tensile adhesion strength
≥ 1.5 MPa | (EN 1542) |
Thermal Compatibility
≥ 1.5 MPa (Part 1 Freeze-Thaw) | (EN 13687-1) |
Reaction to Fire
Class A1 | (EN 13501-1) |
Capillary Absorption
≤ 0.5 kg/m-2·h-0,5 | (EN 13057) |
Permeability to CO2
< 2000 µCO2 | (EN 1062-6) |
Carbonation Resistance
dk ≤ control concrete MC (0,45) | (EN 13295) |
Application
Mixing Ratio
4.6–4.7 L water for 25 kg powder
Layer Thickness
Application | Minimum | Maximum |
Horizontal | 1 mm | 5 mm |
Vertical | 1 mm | 5 mm |
Overhead | 1 mm | 5 mm |
Product Temperature
Maximum | +35 °C |
Minimum | +5 °C |
Ambient Air Temperature
Maximum | +35 °C |
Minimum | +5 °C |
Substrate Temperature
Maximum | +35 °C |
Minimum | +5 °C |
Pot Life
At +20 °C | 40 minutes |
Pot life depends on temperature
Note: Pot life will be shorter at higher temperatures. Pot life will be longer at lower temperatures.
Waiting Time / Overcoating
at +20 °C | minimum 24 hours |
As a guide, depending on weather conditions overcoat 3 days after application (2 days curing + 1 day drying) with the Sikagard® range of protective coatings. For other emulsion paints, refer to the relevant manufacturer’s product information.
Fresh mortar density
2.0 kg/L
Consumption
1.7 kg powder per m2 per mm of layer thickness
Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply the Product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
Yield
| Fresh material per standard bag | 14.8 L |
Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply the Product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
EQUIPMENT
Select the most appropriate equipment required for the project.
SUBSTRATE PREPARATION EQUIPMENT
-
Mechanical hand-held tools for spot repairs
-
High- or ultra-high-pressure water blasting equipment
-
Industrial vacuuming equipment
STEEL REINFORCEMENT EQUIPMENT
-
Abrasive blast cleaning equipment
-
High-pressure water blasting equipment
MIXING EQUIPMENT
-
Clean mixing containers
-
For small quantities: low-speed electric single or double-paddle mixer (< 500 rpm).
-
For large quantities: forced-action mixer
APPLICATION EQUIPMENT
-
Hand-applied: plasterer's hawk, trowel
-
Wet spray: all-in-one mixing and spraying machine, or separate spraying machine and all associated ancillary equipment to suit application volumes. Suitable machines include the PFT N2V, Putzmeister S 5, Wagner PC15, and Inotec inoBEAM F50.
FINISHING EQUIPMENT
-
Trowel (PVC or wooden)
-
Sponge
CURING EQUIPMENT
-
Polyethylene sheeting
SUBSTRATE PREPARATION
CONCRETE
- Clean the substrate thoroughly so it is free from dust, loose material, surface contamination and material which reduces adhesion, prevents suction or wetting by the repair materials.
- Remove delaminated, weak, damaged and deteriorated concrete, and where necessary, sound concrete. Remove using mechanical hand-held tools, high or ultra-high-pressure water blasting equipment.
- Remove sufficient concrete from around corroded reinforcement to allow cleaning, application of a corrosion protection coating (where required) and compaction of the concrete repair mortar.
- Prepare repair surface areas in simple square or rectangular layouts to avoid shrinkage stress concentrations and cracking while the repair material cures. This can also avoid structural stress concentrations from thermal movement and loading during the service life.
PRE-WETTING
Sufficient saturation of the concrete substrate prior to application enables the mortar to gain its full mechanical properties.
- Thoroughly pre-wet the prepared concrete substrate for a minimum of 2 hours before application.
- Keep the surface wet and do not allow to dry.
- The final pre-wetted surface must achieve a dark matt appearance without standing water (saturated surface dry).
MIXING
- Pour the minimum specified quantity of clean water into the mixing vessel.
- Gradually add the powder to the water while stirring slowly.
- Mix for at least for 3 minutes until a uniform, lump-free consistency is achieved.
- If necessary, add small amounts of water, within the allowed range, to adjust consistency. Do not exceed the maximum water content.
- Check the consistency after every mix.
APPLICATION
IMPORTANT
Strictly follow installation procedures
Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
ON-SITE CONDITIONS
In draughty areas, open spaces, at temperatures less than +10 °C or in very dry climates, early plastic shrinkage cracks may occur due to rapid moisture loss. Confirm substrate moisture content, product, substrate and air temperatures prior to application.
In hot weather, store bags in a cool environment and use cold mixing water to assist with controlling the exothermic reaction.
In cold weather, store bags in a warm environment and use warm mixing water to assist with achieving strength gain.
SMOOTHING COAT - MANUAL APPLICATION
- Remove excess water from within the surface pores and cavities with a clean sponge.
- Apply a thin layer of smoothing coat Product over the complete substrate surface to fill surface pores or cavities.
- Apply more Product wet on wet, observing the minimum and maximum layer thicknesses.
FILLING BLOWHOLES
- Remove excess water from within the surface pores and cavities with a clean sponge.
- Rub the smoothing coat Product directly into the pores using a trowel or jute cloth.
- Remove all excess material as soon as possible.
SMOOTHING COAT - WET SPRAY APPLICATION
- Remove excess water from within surface pores and cavities.
- Spray-apply a thin contact layer of smoothing coat Product over the complete substrate surface to fill surface pores or cavities.
- Spray-apply more Product wet on wet, observing the minimum and maximum layer thicknesses. Spray with enough pressure to ensure good adhesion.
SURFACE FINISHING BY HAND
- Allow the mortar to surface harden.
- Surface finish to the required surface texture using a stainless steel, steel, PVC or wooden float. Do not add water.
CURING TREATMENT
Cure immediately after finishing using an appropriate curing method, such as curing compound, moist geotextile membrane or polythene sheet.
Do not use curing compounds if they could adversely affect subsequently applied products and systems.
Protect from wind, rain, frost, and direct sunlight during curing.
CLEANING OF TOOLS
Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.