Sikalastic®-152

Cementitious flexible fibre-reinforced mortar for waterproofing and concrete protection

Sikalastic®-152 is a 2-part, cementitious, polymer modified, flexible, crack-bridging, fibre-reinforced mortar for waterproofing and concrete protection. It can be applied onto many types of construction substrates.

Flexible waterproofing and concrete protection in one product
Good crack-bridging abilities at low temperatures
Resistant against de-icing salts and carbon dioxide
2-part, including liquid polymer, no additional mixing water required
Can be applied onto slightly humid substrates
Non sagging: Easy application also on vertical walls
Good adhesion onto various substrates such as concrete, cementitious renders, stone, masonry

Where to buy

Product Data Sheet Show all documents

Usage

Flexible waterproofing and protection of structures retaining or exposed to water such as tanks, concrete pipes, bridges etc.
Protective, anti-carbonation coating for concrete surfaces
Waterproofing of bathrooms, showers, wet rooms, terraces, balconies and swimming pools before the application of ceramic tiles bonded with cementitious adhesives
Waterproofing and protection of concrete structures
Internal waterproofing of basement walls and floors exposed to low water pressure
Protection of concrete structures against the effects of de-icing salts and freeze-thaw

Advantages

Flexible waterproofing and concrete protection in one product
Good crack-bridging abilities at low temperatures
Resistant against de-icing salts and carbon dioxide
2-part, including liquid polymer, no additional mixing water required
Can be applied onto slightly humid substrates
Non sagging: Easy application also on vertical walls
Good adhesion onto various substrates such as concrete, cementitious renders, stone, masonry

Packaging

Ready batched 33 kg units:

Part A (Liquid)	8 kg
Part B (Powder)	25 kg

Colour

Grey

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

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

Product Information

Chemical Base

Cement modified with polymers, selected alkali-resistant aggregates, microsilica and fibres.

Shelf Life

12 months from date of production

Storage Conditions

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

Maximum Grain Size

D_max: ~0,5 mm

Product Declaration

EN 14891: Liquid applied water impermeable products for use beneath ceramic tiling bonded with adhesives
EN 1504-2: Surface protection systems for concrete - Coating

Technical Information

Tensile Adhesion Strength

~1,5 MPa

(EN 1542)

	Test Method	Result
Initial	A.6,2	~2,0 MPa
After water contact	A.6,3	~1,3 MPa
After heat ageing	A.6,5	~3,0 MPa
After freeze-thaw cycles	A.6,6	~1,3 MPa
After contact with lime water	A.6,9	~1,6 MPa
After contact with chlorinated water	A.6,7	~1,6 MPa

Classification

~1,2 mm (+23 °C) Class A3	(EN 1062-7)
~0,90 mm (-10 °C) Class A3

Note: All values out reinforcement mesh

Crack Bridging Ability

~1,25 mm (+23 °C) Class A4	(EN 1062-7)
~0,90 mm (-10 °C) Class A3

(Values without reinforcement mesh)

Test method

Requirement

Crack bridging ability standard conditions

(+23 °C)

A.8,2

≥ 0,75 / 1,08 mm

Crack bridging ability at low temperature

(-20 °C) ⁽¹⁾

A.8,3

≥ 0,75 / 1,04 mm

⁽¹⁾ Embedded with glass fibre fabric mesh (150–160 g/m² and 0,47 mm thickness).

Reaction to Fire

Euroclass A2

(EN 13501-1)

Freeze Thaw De-Icing Salt Resistance

≥ 0,8 N/mm²

(EN 13687-1)

Behaviour after Artificial Weathering

After 2000 hrs, no blistering, cracking or flaking. Slight color change.

(EN 1062-11)

Permeability to Water Vapour

Class I (permeable)

S_D < 5 m

Capillary Absorption

~0,005 kg/m²∙h^0,5

(EN 1062-3)

Water Penetration under Pressure

No penetration after 7 days at 1,5 bar

(EN 14891 A.7)

Water Penetration under Negative Pressure

No penetration after 72hours at 2,5 bar

(UNI 8298/8)

Permeability to Carbon Dioxide

S_D ≥ 50 m

(EN 1062-6)

Application

Application Information

Mixing Ratio

Part A : Part B = 8 : 25 (by weight)

Fresh mortar density

~1,8 kg/l

Layer Thickness

~3 mm applied in a minimum of 2 layers (maximum recommended layer thickness is 2 mm)

Ambient Air Temperature

+ 5 °C min. / + 35 °C max.

Substrate Temperature

+ 5 °C min. / + 35 °C max.

Pot Life

~1 hour at +20 °C

Waiting Time / Overcoating

Sikalastic®-152 must be fully hardened before overcoating or in contact with water.

	+20 °C	+10 °C
Horizontal covering by tiles	~2 days	~7 days
Vertical covering by tiles	~2 days	~3 days
Protective coating	~2 days	~3 days
Water Immersion	~2 days	~7 days

Times are approximate and will be affected by changing ambient conditions particularly temperature, relative humidity and ventilation.

Consumption

~1,8 kg/m²/mm

This figure 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 product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

Application steps

MIXING

Important: Do not add any additional water or other constituents.

Shake carefully Part. A before mixing.
Pour ~½ of Part. A into a suitable mixing container.
Add Part. B slowly while mixing with a low speed (~ 500 rpm) electric single paddle mixer or other suitable equipment until a consistent mix has been achieved.
Add the remaining amount of Part. A.
Mix thoroughly for at least 3 minutes to achieve a smooth consistent mix.

APPLICATION

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: Before application remove excess water, e.g. with a clean sponge.

Important: In natural damp environments, it is not necessary to dampen the substrate before application.

Important: Avoid standing water or condensation during application.

General

Sikalastic®-152 must be applied to the full surface area at the required layer thickness.

Hand Application

Apply mixed material with firm even pressure onto the prepared substrate using a notched (3 x 3 mm) trowel. As soon as the first layer has hardened, apply the second coat by flat edged trowel.

Sprayed Application - Wet Spray

The wet mixed Sikalastic®-152 must be placed into the spraying equipment and applied onto the prepared substrate. As soon as the first layer has hardened, spray apply the second coat.

Glass fibre fabric embedment

In highly stressed areas a special alkali-resistant glass fibre fabric (150–160 g/m²) must be placed into the first fresh mortar layer. Trim the fabric and fully embed into the mortar layer avoiding the formation of voids.