Single component fibre cement mortar for flexible waterproofing and protection of concrete.

Sikalastic -1K is a one-component, fibre-reinforced, cement-based crack-bridging mortar modified with special alkali-resistant polymers. Sikalastic -1K can be applied by brush or trowel.

Single component, just add water
Adjustable consistency, easy to apply with a brush or trowel
Good sag resistance and easy to apply, even on vertical surfaces

USES :

Flexible sealing and protection of concrete structures such as tanks, reservoirs, pipes, etc.
Waterproofing of bathrooms, showers, terraces, balconies, swimming pools, pre-laying of ceramic coverings with glue
External waterproofing of buried walls
Interior sealing of basement walls and floors with negative water pressure
Flexible coating to protect reinforced concrete structures against the freeze-thaw effect and carbon dioxide attack to improve their durability

BENEFITS :

Single component, just add water
Adjustable consistency, easy to apply with a brush or trowel
Good sag resistance and easy to apply, even on vertical surfaces
Good crack bridging ability
Excellent adhesion to many substrates including concrete, mortar, stone, masonry
Can be applied to damp substrates

PACKAGING :

18kg bags

COLOUR :

Light grey and white

Chemical basis :

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

Conservation :

12 months from date of manufacture

Storage conditions :

Store properly in its original packaging in a cool, dry place. Protect from water.

Maximum particle size :

Dmax : ~ _0.3mm

Tensile adhesion :

≥0.8N/ ^mm2

Value obtained with a total thickness of 3 mm in two layers with 22% water

(EN1542)

	Method of test	Conditions
Initial adhesion: tensile strength	A .6.2	≥0.5N/ ^mm2
Adhesion after immersion in water	A.6.3	≥0.5N/ ^mm2
Adhesion after thermal ageing	A.6.5	≥0.5N/ ^mm2
Adhesion after freeze-thaw cycles	A.6.6	≥0.5N/ ^mm2
Adhesion after immersion in lime water	A.6.9	≥0.5N/ ^mm2
Adhesion after contact with chlorinated water	A.6.7	≥0.5N/ ^mm2

Values obtained with a total consumption of 3.6 kg/m ² in two coats with 30% water

Crack bridging capacity :

≥ 0.50 mm (Class A 3, +23 ºC) ¹	(EN1062-7)
≥ 0,75 mm (+23 °C) ²	(EN 14891 A.8.2)
≥ 0,75 mm (–5 °C) ²	(EN 14891 A.8.3)

1Value obtained with a total layer thickness of 3 mm in two layers with 22% water

2 Value obtained with a total consumption of 3.6 kg/m ² in two layers with 30% water

Reaction to fire :

Euroclass A2

(EN 13501-1)

Resistance to ice salts – Thawing

≥0.8N/ ^mm2

(EN 13687-1)

Value obtained with a total layer thickness of 3 mm in two layers with 22% water

Water vapour permeability

Class I (permeable)

ET < _5m

Value obtained with a total layer thickness of 3 mm in two layers with 22% water

Capillary Absorption

~0,02 kg/m ² ∙h ^0,5

(EN1062-3)

Value obtained with a total layer thickness of 3 mm in two layers with 22% water

Pressurised water penetration

No penetration after 72h at 5.0 bar 1	(EN 12390-8) ²
No penetration after 7 days at 1.5 bar ³	(EN 14891 A.7)

1 Value obtained with a total layer thickness of 3 mm in two layers with 22% water

2 Amended

3 Value obtained with a total consumption of 3.6 kg/m ²in two layers with 30% water

Water penetration under negative pressure

No penetration after 72 hours at 2.5 bar

(UNI 8298/8)

Value obtained with a total layer thickness of 3 mm in two layers with 22% water

CO2 permeability

DS ≥ _50m

(EN1062-6)

Value obtained with a total layer thickness of 3 mm in two layers with 22% water

Mixing ratio :

Application process	water dosage
Brush	~5.4 litres per 18 kg bag
trowel	~4 litres per 18 Kg bag

Density of fresh mortar :

~1.5kg/litre

Layer thickness

Constant thickness of 3 mm, applied in a minimum of 2 layers.

The maximum recommended thickness per coat is 2 mm when applied with a trowel and 1 mm when applied with a brush.

Ambient temperature :

5 ºC min. / 35ºC max.

Supporting temperature :

5 ºC min. / 35ºC max.

Pot life :

~30 minutes at +20°C

Waiting time / Recoverability

Sikalastic®-1K must be fully cured before it is covered or brought into contact with water.

Consumption :

Depends on the roughness of the substrate, as an indication: ~1.2 kg/m ²/mm

Weight	N/A
Couleurs	Grey, White

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