Sika MonoTop®-4052

• Contributes towards satisfying Materials and Resources (MR) Credit: Building Product Disclosure and Optimization — Material Ingredients under LEED® v4. 

• Contributes towards satisfying Materials and Resources (MR) Credit: Building Product Disclosure and Optimization — Sourcing of Raw Materials under LEED® v4. 

• Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by Institut für Bauen und Umwelt e.V. (IBU). 

• VOC emission classification GEV Emicode EC1_plus.

• CE marking and declaration of performance based on EN 13813 Screed material and floor screeds — Screed material — Properties and requirements — Cementitious screed material.

• CE marking and declaration of performance based on EN 1504-3 Products and systems for the protection and repair of concrete structures — Structural and non-structural repair. 

• CE marking and declaration of performance based on EN 1504-7 Products and systems for the protection and repair of concrete structures — Reinforcement corrosion protection. 

Selected cement, aggregates and additives

9 months from date of production

The Product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +35 °C. Always refer to the packaging.

Refer to the current Safety Data Sheet for information on safe handling and storage.

≤1.8 mm

* For very demanding applications (e.g. HGV trafficking) Sikadur®-32+ can be used as a bonding primer (Sika MonoTop®-4052 applied 'wet-on-wet'). 

** If required. Sika MonoTop®-4052 can be left exposed and trafficked directly if installed with Sikafloor®-140 W Troweling Primer and cured for a minimum period of 48 hours. To prevent staining, it is recommended the surface is sealed with a Product from the Sikafloor® ProSeal Range (which can also act as a curing agent if not overcoating). 

NOTE: The Product must be kept >+10°C for a minimum period of 24 hours to enable fast epoxy overcoating.

~2.2 kg/l

Pot life depends on temperature.

NOTE: Pot life will be shorter at higher temperatures. Pot life will be longer at lower temperatures.

* For very demanding applications (e.g. HGV trafficking) Sikadur®-32+ can be used as a bonding primer (Sika MonoTop®-4052 applied 'wet-on-wet'). 

** If required. Sika MonoTop®-4052 can be left exposed and trafficked directly if installed with Sikafloor®-140 W Troweling Primer and cured for a minimum period of 48 hours. To prevent staining, it is recommended the surface is sealed with a Product from the Sikafloor® ProSeal Range (which can also act as a curing agent if not overcoating). 

*** If the Epoxy Primer is not applied within 5 days, the surface of Sika MonoTop®-4052 must be prepared mechanically using suitable means to remove cement laitance, coatings or other surface treatments, and achieve an open textured, gripping surface.

NOTE: The above information is based on a temperature of +20 °C. The Product must be kept >+10 °C for a minimum period of 24 hours to enable fast epoxy overcoating.

NOTE: The above is a guide. Always refer to individual Product Data Sheets.

~1.9 kg/m² of powder per mm of thickness (i.e. one 25 kg bag will cover ~2.2 m² when applied at 6 mm). 

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.

~13 Litres of mortar per 25 kg bag

Select the most appropriate equipment required for the project:

SUBSTRATE PREPARATION EQUIPMENT

• Mechanical handheld tools for small / spot repairs. 

• Abrasive blast cleaning, planing or scarifying equipment.

• High or ultra-high pressure water blasting equipment. 

STEEL REINFORCEMENT PREPARATION EQUIPMENT

• Abrasive blast cleaning equipment.

• High pressure water blasting equipment.

MIXING EQUIPMENT

• Clean mixing containers.

• Small quantities: low-speed electric single or double-paddle mixer (< 500 rpm).

• Large quantities: forced action mixer to suit application (e.g. continuous mortar mixer and integral delivery pump with associated hoses, such as inoCOMB Cabrio 0.2 or M-Tec Duo Mix 2000).

APPLICATION EQUIPMENT

• If necessary, mixed material carriers and carts (e.g. wheelbarrows).

• Spreading equipment.

• Height levelling equipment.

• Dapple bar for larger areas. 

• Hand applied: Plasterer's hawk, trowel. 

• Mechanically applied: All-in-one mixing and pumping machine, or separate pumping equipment and all associated ancilliary equipment to suit application volumes.

FINISHING EQUIPMENT

• Trowel (PVC or wooden).

• Sponge.

• Light power float machine(s).

• Finishing brooms.

• Grinding equipment.

CURING EQUIPMENT

• Polythene sheeting. 

• Tape to secure polythene sheeting.

Also refer to Site Handbook ‘Repair of Concrete Structures – Patch Repair and Spray Applications’ and Method Statement MS 850-32-01 'Repairing Concrete Using Sika Ready To Use Mortars'.

CONCRETE

Cementitious substrates must be structurally sound and of sufficient compressive strength (minimum 25 N/mm²) with a minimum tensile strength of 1.5 N/mm².

TREATMENT OF CRACKS AND JOINTS

IMPORTANT

Reduced service life due to incorrect treatment of cracks

The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.

1. For static cracks, ensure the width is suitable for overcoating with Sika MonoTop®-4052.
2. Use Sikadur® or Sikafloor® resins to fill all construction joints and existing static surface cracks in the substrate before full layer application.
3. For dynamic cracks, ensure the movement is within the movement capacity of Sika MonoTop®-4052. 
4. Continue existing movement joints into the new floor screed, sealing with an appropriate Product from the Sikaflex® Range. 

CONCRETE

1. 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.
2. Remove delaminated, weak, damaged and deteriorated concrete and, where necessary, sound concrete. Remove using mechanical handheld tools, high or ultra-high-pressure water blasting equipment or scarifying equipment with subsequent abrasive blasting.
3. 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.
4. 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.

Prepare concrete and cementitious substrates to a minimum substrate roughness of 2.0 mm according to EN 1766.

STEEL REINFORCEMENT

1. Remove rust, scale, mortar, concrete, dust and other loose and deleterious material which reduces bond or contributes to corrosion.
2. Prepare surfaces to bright steel, minimum Sa 2.5 (as per ISO 8501-1), using abrasive blast cleaning or high-pressure water blasting equipment.

1. Pour the minimum amount of water into a suitable clean mixing container or equipment.
2. Gradually add the powder to the water while stirring slowly.
3. Mix thoroughly for at least for 3 minutes, add additional water if necessary. Note: Do not add more water than the maximum specified amount.
4. Adjust to the required consistency to achieve a smooth consistent mix.
5. Check the consistency after every mix.

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.

IMPORTANT

Risk of cracking due to exposure to frost

1. Protect freshly applied material from freezing and frost.

IMPORTANT

Risk of cracking due to application in direct sun or strong winds

1. Do not apply the Product in direct sun, strong winds or both.

IMPORTANT

Poor Product performance due to insufficient substrate pre-wetting

Insufficient substrate saturation prior to application will cause the mortar to not gain its full mechanical properties.

1. Only apply the Product to stable, prepared substrates.
2. Thoroughly pre-wet the prepared substrate for a minimum of 2 hours before application.
3. Keep the surface wet and do not allow to dry.
4. The final pre-wetted surface must achieve a dark matt appearance (i.e. saturated surface dry).

BONDING PRIMER

1. Apply Sika MonoTop®-1010 (or SikaTop® Armatec®-110 EpoCem® for demanding applications) to the prepared substrate as a bonding primer.
2. Apply the subsequent layer of repair mortar 'wet-on-wet'.

REPAIR MORTAR APPLICATION FOR PATCH REPAIRS

1. For small / spot repairs, remove excess water from within the surface pores and cavities with a clean sponge.
2. Make a scratch coat using the repair mortar at the higher water level (i.e. 3.6 litres of water per 25kg bag).
3. Apply the scratch coat over the complete substrate surface to form a thin layer to fill surface pores or cavities.
4. Apply the repair mortar onto the scratch coat ‘wet-on-wet’ between the minimum and maximum layer thicknesses without the formation of voids. Do not work to a 'feather edge'. If required, to maintain the minimum layer thickness, a chase should be cut into the substrate.

LARGER SCALE APPLICATIONS

1. Mechanical mixing and pumping is often preferable for larger scale applications to prevent cold joints from forming.
2. Apply Sika MonoTop®-1010 (or SikaTop® Armatec®- 110 EpoCem® for demanding applications) to the prepared substrate as a bonding primer.
3. Apply Sika MonoTop®-4052 'wet-on-wet'. Refer to the individual Product Data Sheets.
4. When sufficient Product has been applied to a particular area to meet the desired layer thickness (between the minimum and maximum layer thicknesses), use a dapple bar (also called a tamping bar) to level and help remove any entrapped air. Use in one direction and then complete a second pass perpendicular to the first.
5. Do not 'feather edge'. If required, to maintain the minimum layer thickness, a chase should be cut into the substrate.

SURFACE FINISHING

IMPORTANT

Risk of discolouration and cracking due to adding water during surface finishing

Do not add water during the surface finishing to prevent discolouration and cracking. 

IMPORTANT

Surface cracking due to rapid moisture loss

In draughty areas, open spaces, in temperatures greater than +20 °C, or in very dry climates, early plastic shrinkage cracks may occur.

1. Confirm substrate moisture content, Product, substrate and air temperatures prior to application.
2. Allow mortar to surface harden.
3. Surface finish to the required surface texture using a stainless steel, steel, PVC or wooden float.

COLD WEATHER WORKING

Store bags in a warm environment and use warm water to assist with achieving strength gain and maintaining physical properties. Protect freshly applied Product from freezing and frost. 

HOT WEATHER WORKING

Store bags in a cool environment and use cold water to assist with controlling the exothermic reaction to reduce cracking and maintaining physical properties.

In draughty areas, open spaces, at higher or lower temperatures, or in very dry environments, early plastic shrinkage cracks may occur. Do not apply the Product in direct sun and / or strong winds.

Always confirm Product, substrate and ambient air temperatures are suitable prior to application.

SURFACE FINISHING USING POWER FLOAT EQUIPMENT

1. IMPORTANT: Do not use heavy ride-on trowelling machines and do not spray water onto the surface while finishing. Finish the Product with suitable equipment such as trowels or walk-behind power floats with discs.
2. Start finishing or smoothing (2 to 4 hours after mixing at +20 °C), when the surface is trafficable by foot leaving small imprints (depth 1 to 2 mm).
3. Always use Sikafloor®-140 W Troweling Primer as a troweling aid when machine trowelling. Spray 0.2 to 0.3 kg/m² when walkable (maximum 15 minutes before the start of troweling) onto the surface, and trowel once or twice with the disc to a slightly rough surface for early coating without substrate preparation. Note: Troweling with blades to a monolithic, smooth, dense surface requires experienced applicators and a rapid switch from disc to blades (two machines are usually necessary).

CURING BEFORE RESIN COATING APPLICATION

1. Immediately start curing after the last finishing operation with polythene sheets taped down at the edges for at least 48 hours (24 hours when using Sikafloor®-140 W Troweling Primer and maintaining Product >+10°C) to ensure full cement hydration and to minimise cracking.
2. Do not contaminate the surface!
3. Mechanically prepare the surface using a suitable method for the subsequent layer. 

CURING WHEN OVERCOATING WITHOUT ADDITIONAL SURFACE PREPARATION, BETWEEN 24 HOURS AND 5 DAYS

1. Immediately start curing after the last finishing operation.
2. Cure the Product with polythene sheets taped down at the edges.
3. Apply the epoxy primer at the appropriate rate to the surface of the Product within 24 hours and 5 days of completing the surface finishing process. Note: Sikafloor®-140 W Troweling Primer must be used and the Product must be kept >+10°C for a minimum period of 24 hours to enable fast epoxy overcoating.
4. Remove polythene sheets 1 hour prior to applying the epoxy resin primer to allow drying of the surface to a light grey colour. 
5. Broadcast the surface of the resin with 0.3 to 0.8 mm or 0.6 to 1.2 mm Sika Quartz Sand.

CURING WHEN NOT OVERCOATING (DIRECTLY TRAFFICKED), OR OVERCOATING WITH NON-RESIN COATINGS

1. Always use Sikafloor®-140 W Troweling Primer. 
2. Immediately start curing after the last finishing operation. 
3. Cure the Product with polythene sheets taped down at the edges for at least 48 hours, or (if not overcoating) use a Product from the Sikafloor® ProSeal Range. 
4. If using polythene sheets and trafficking directly, to avoid staining, it is recommended to seal the surface with a Product from the Sikafloor® ProSeal Range. 

NOTE: Curing compounds can adversely affect subsequently applied Products and systems - use polythene sheets only, unless the product is being exposed to traffic and not overcoated, in which case a Product from the Sikafloor® ProSeal Range can be used (which will also seal the surface to resist staining). 

Reference shall also be made to EN 1504-10 for specific requirements.

IMPORTANT

Loss of coating adhesion due to contaminated surfaces

If applicable, after curing, protect against contamination using polythene sheeting before the application of any subsequent surface treatment.