Sikalastic®-6100 FX

(former MasterSeal® 6100FX)

One component elastic and flexible lightweight membrane for waterproofing and concrete protection

Sikalastic®-6100 FX is a one-component, cement based, elastic and flexible, lightweight and fast curing membrane for waterproofing and concrete protection. When mixed with water, Sikalastic®-6100 FX obtains a fluid consistency so that it can be easily hand applied or sprayed. Structures waterproofed with Sikalastic®-6100 FX can be filled with water (including potable water) after 72 hours of curing. Sikalastic®-6100 FX is composed of specially selected cements, lightweight fillers, sand and special polymers in powder form.

One-component product: only needs water to be added.
High elastic properties: high crack bridging abilities static and dynamic, maintains elasticity in immersion and down to -10 °C. High durability and protection without cracking.

Low density/Lightweight formulation: Low consumption providing high yield and time saving in application.
Rapid curing: Allows early service ability. Tanks and reservoirs can be filled after only 3 days of curing.
Waterproof at 2 mm thickness: Resists up to 5 bars of water pressure.
Excellent adhesion
Breathable: Water vapour permeable
High resistance to carbon dioxide diffusion: Protects concrete from rebar corrosion. A 2 mm coating provides anti-carbonation cover equivalent up to 18 cm of concrete.
Sulphate resistant
No ammonia smell: Can be applied in closed spaces.
Reduced efflorescence appearance risk
UV resistant: can be used as final coating in exterior applications without compromising its mechanical properties.
Suitable for contact with drinking water: Complies with Directive (EU) 2020/2184 and WRAS approval certificate.
High thickness range: possibility to apply 5 mm in one coat on rough substrates (spray).
Barrier to radon gas (radon gas diffusion length 0.23 mm).
Classification CM 01-P according to EN 14891 (for use as a waterproofing under cementitious adhesive).

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Product Data Sheet Show all documents

Usage

For interior and exterior application
As a waterproof lining for water retaining structures, including drinking water, swimming pools (below tiles), pipes, basins, etc.
To provide foundation protection
External waterproofing of small roofs and balconies.
Waterproofing of bathrooms and shower trays.
To protect concrete surfaces from carbonation and chloride attack
For areas constantly submerged in water
Suitable as a blow hole filler prior to overcoating

Advantages

One-component product: only needs water to be added.
High elastic properties: high crack bridging abilities static and dynamic, maintains elasticity in immersion and down to -10 °C. High durability and protection without cracking.

Low density/Lightweight formulation: Low consumption providing high yield and time saving in application.
Rapid curing: Allows early service ability. Tanks and reservoirs can be filled after only 3 days of curing.
Waterproof at 2 mm thickness: Resists up to 5 bars of water pressure.
Excellent adhesion
Breathable: Water vapour permeable
High resistance to carbon dioxide diffusion: Protects concrete from rebar corrosion. A 2 mm coating provides anti-carbonation cover equivalent up to 18 cm of concrete.
Sulphate resistant
No ammonia smell: Can be applied in closed spaces.
Reduced efflorescence appearance risk
UV resistant: can be used as final coating in exterior applications without compromising its mechanical properties.
Suitable for contact with drinking water: Complies with Directive (EU) 2020/2184 and WRAS approval certificate.
High thickness range: possibility to apply 5 mm in one coat on rough substrates (spray).
Barrier to radon gas (radon gas diffusion length 0.23 mm).
Classification CM 01-P according to EN 14891 (for use as a waterproofing under cementitious adhesive).

Packaging

15 kg bags

Colour

Available in light grey and white colour.

Product Details

Sustainability / Certifications / Approvals

ENVIRONMENTAL INFORMATION

Specific EPD in accordance with EN 15804+A2 & ISO 14025 / ISO 21930.
Conformity with LEED v4 MRc 2 – Environmental Product Declarations (Option 1).
Conformity with LEED v4 MRc 3 – Sourcing of Raw Materials
Conformity with LEED v4 MRc 4 – Material Ingredients (Option 2)

APPROVALS / STANDARDS

CE Marking and Declaration of Performance to EN 1504-2 - Surface protection product for concrete - Coating
CE Marking and Declaration of Performance to EN 14891 - Liquid applied water impermeable products for use beneath ceramic tiling bonded with adhesives

Suitable for contact with drinking water (subject to local regulation):

WRAS approval
Directive (EU) 2020/2184 - [RD 3/2023]

Product Information

Chemical Base

Mix of special lightweight cements and selected aggregates with powdered polymers

Shelf Life

12 months from date of production if stored properly in undamaged and unopened original sealed packaging in dry and cool conditions

Storage Conditions

Store properly in undamaged and unopened original packaging in cool and dry conditions, under cover and clear off the ground. Protect from water, moisture and weather inclemencies and do not store at temperatures over +30 °C.

Technical Information

Abrasion Resistance

AR1 (50-100 µm)

(BS EN 13892-4)

Resistance to Impact

5 Nm (Class I)

(EN ISO 6272-1)

Crack Bridging Ability

Static crack bridging:

Class A4 (23 °C)
Class A3 (-10 °C)

Dynamic crack bridging:

Class B3.1 (-10 °C)

(EN 1062-7)

Tensile adhesion strength

Adhesion strength	>1.5 MPa	(EN 1542)
Adhesion strength after thunder shower cycling (10x) with freeze cycling sand de-icing salts (50x)	>1.5 MPa No bubbles, no cracks, no delamination	(EN 13687-2) (EN 13687-1)
Initial tensile adhesion strength	> 0.5 N/mm²	A.6.2. (EN 14891)
Tensile adhesion strength after water contact	> 0.5 N/mm²	A.6.3. (EN 14891)
Tensile adhesion strength after heat ageing	> 0.5 N/mm²	A.6.5. (EN 14891)
Tensile adhesion strength after freeze-thaw cycle	> 0.5 N/mm²	A.6.6. (EN 14891)
Tensile adhesion strength after contact with lime water	> 0.5 N/mm²	A.6.9. (EN 14891)
Tensile adhesion strength after contact with chlorinated water	> 0.5 N/mm²	A.6.7. (EN 14891)

Capillary Absorption

<0.1 kg·m^–2·h^–0.5

(EN 1062-3)

Water Penetration under Pressure

Up to 5 bar (2mm thickness)

(EN 12390-8)

Water Penetration under Negative Pressure

Up to 1 bar (2 mm thickness)

(UNI 8298-8)

Permeability to Water Vapour

Class I (S_D< 5 m)

(EN ISO 7783)

Permeability to CO2

S_D: 104 m (S_D > 50m)

(EN 1062-6)

Behaviour after Artificial Weathering

After 2000h in UV chamber was not observed changes in appearance such as cale, blistering or peeling

(EN 1062-11)

Salt resistance

No change observed in the product after 175 days of permanent immersion in:

Synthetic seawater, based on DIN 50905-4
Salt mix solution 30 g/l NaCl, NaNO₃, and NA₂SO₄, based on WTA-Guideline
KJ solution (10 g/l)
NaSO4 solution, based on Wittekindt-process
Tap water

Reaction to Fire

Class C-s1, d0

(EN 13501-1)

Permeability to radon

Radon diffusion: 1,12 E^-13·m²·s^-1
Radon diffusion length: 0.23 mm

Application

Application Information

Fresh mortar density

~ 1.2 g/cm3

Layer Thickness

0.5 - 1,5 mm (up to 5 mm for reprofiling)

Product Temperature

+5 °C min. / +35 °C max.

Ambient Air Temperature

+5 °C min. / +35 °C max.

Do not apply if the ambient temperature will fall below +5°C during the following 24 hours.

Avoid the application during direct sunlight.

Mixing Ratio

5.6-6.2 litres of water per 15 kg bag

Substrate Temperature

+ 5 ºC min. / + 35 ºC max.

Do not apply on frozen surfaces.

Maturing time

1–2 minutes

Pot Life

~ 45 minutes at 20 °C ambient and substrate temperature.

~ 30 minutes at 30 °C ambient and substrate temperature.

Waiting time

Cover with tiles after 4-8 hours.

Exposure to mechanical loads after 3 days.

Exposure to water pressure after 3 days.

In case of waterproofing in enclosed areas with high humidity, the hardening and commissioning times are considerably longer.

Consumption

~ 1.2 Kg/m²/mm of mixed product.

~ 0.9 Kg/m²/mm of powder product.

For a 2 mm thickness application (reccomended total thickness) one bag of 15 Kg covers approx. 8.3 m².

Consumption is influenced by the roughness of the substrate. On rough substrates the quantities required will increase significantly. In these cases, to obtain real consumption calculation based on in-situ tests might be required.

Application steps

SUBSTRATE PREPARATION

It can be applied on concrete and mortar substrates. Surfaces must be clean, sound (recommended tensile strength > 1N/mm²) free of oil, grease or any other contaminant . Carefully remove all loose particles and dust. All substrate coatings, defective renders, release agents and other previously applied materials that may reduce the adherence of the product should be removed. The substrate must have a certain roughness to allow mechanical adhesion as well as chemical adhesion. Smooth and not very absorbent substrates should be treated mechanically.

In case of active leaks, these must be plugged using a suitable fast setting mortar (i.e. Sika Monotop®-108 Water Plug).

Concrete, cementitious substrates: Prepare the surface by grinding, sandblasting, hidrocleaning, wire brushing or any other appropriate method. For the removal of the remaining dust and particles it is recommended to clean the substrate by means of compressed air.

Repair any damaged concrete with a suitable SikaMonotop® mortar.

Masonry: Prepare the surface by wire brushing or other appropriate mechanical methods. For the removal of the remaining dust and particles it is recommended to clean the substrate by means of compressed air.

All mortar joints must be properly cleaned and coated with a suitable mortar.

MIXING

Sikalastic®-6100 FX should be mixed on site in clean containers.

Pour 5.6 litres of water (maximum 6.2 l for brush applications) into a clean container, then slowly pour in the 15kg of Sikalastic®-6100 FX . Mix with a low-speed drill mixer (400 – 600 rpm). Mix for approximatelly 3 minutes approximately, until a thick, batter-like consistency is obtained.

Allow the mixture to stand for approximately 1 – 2 minutes to ensure full saturation of the cement has taken place. Re-mix, adding a small quantity of water, if required to restore the consistency.

Do not mix more material than the quantity which can be used in 45 minutes.

For the first coat, additional 0.6 litre of water per bag can be added to the mixture. Do not exceed 6.2 litres water addition per bag.

APPLICATION

Sikalastic®-6100 FX can be applied by brush, trowel or sprayed with suitable equipment. Roller application is possible, but not recommended.

Always apply the mix to a pre-dampened surface. Carefully wet the surface until saturation before application of Sikalastic®-6100 FX. High suction substrates require more dampening then dense substrates. However, make sure there is no freestanding water.

First coat: Must be applied to the still damp substrate to ensure adhesion. Care must be taken not to spread the material too thinly. First layer as a bonding slurry with approximately 0,5 mm thickness.

If the material does not adhere correctly (without exceeding the pot-life), or if the material begins to drag or “ball”, do not add more water, the substrate must be re-wetted.

Allow at least 2 hours of curing before applying a second coat (this curing time may vary according to environmental conditions: temperature, wind and humidity; can be up to 5 hours).

Second coat: Slightly dampen the first coat and remove excess moisture. Apply a second coat perpendicular to the previous coat. Second layer with approximately 1,5 mm thickness. Ensure a total thickness of material of minimum 2 mm.

Finishing: The aesthetic finish of the membrane can be improved by applying a damp sponge floated to the surface of the membrane to give a uniform surface.

In the case of swimming pool waterproofing, the product shall be covered with tiles or protective coating.

CURING TREATMENT

Under hot or excessive drying conditions prevent the product from drying out by spraying lightly with water. Fog-spray after the initial set has taken place for as long as practicable.

In cold, humid or poorly ventilated environments, curing times may be longer. It may be necessary to leave the application for a longer curing period or to introduce forced air movement.