Product Data Sheet
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Sikalastic®-701

Polyurethane hybrid top coat for liquid-applied membrane waterproofing systems

Sikalastic®-701 is a two-part, polyurethane hybrid top coat with a gloss finish. It is designed for use with Sika® Liquid Applied Membrane waterproofing systems.

  • Aliphatic polyurethane formulation with UV and yellowing resistance (see test data)
  • Tested for long-term weathering performance
  • Colour stability and gloss retention verified through accelerated ageing tests
  • Chemical resistance supported by technical data
  • Contributes to cool roof design via high Solar Reflective Index (SRI) – see SRI data
  • Suitable for areas subject to ponding water (refer to performance data)
 
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Product Data Sheet
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Usage

Used as a top coat in:
  • Sika Pro-Tecta metal roof waterproofing systems
  • Applications in conjunction with Sikalastic®-625 N

Advantages

  • Aliphatic polyurethane formulation with UV and yellowing resistance (see test data)
  • Tested for long-term weathering performance
  • Colour stability and gloss retention verified through accelerated ageing tests
  • Chemical resistance supported by technical data
  • Contributes to cool roof design via high Solar Reflective Index (SRI) – see SRI data
  • Suitable for areas subject to ponding water (refer to performance data)
 

Packaging

Part A

10,0 kg container

Part B

2,5 kg container

Part A + B

12,5 kg ready to mix unit

Refer to current price list for packaging variations

Colour

Final colour

White/Light Grey

The product can be coloured locally with Sika® In Pail Tinting (IPT) machines. For more information, consult the local Sika customer service.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • BBA Certificate No. 16/5294
  • European Technical Assessment No. ETA-20/1013
  • Classified BROOF(t4) to BS EN 13501-5 (specific system build-ups)
  • CE marked in accordance with EAD 030350-00-0402
  • Declaration of Performance No. 67409260
Product Information

Chemical Base

Elastomeric Polyurethane/Hybrid

Shelf Life

Shelf Life

Part A:24 Months from date of production
Part B:12 Months from date of production

Storage Conditions

Store properly in original, unopened and undamaged packaging, in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Density

~1,25 kg/l (mixed A+B)

(DIN EN ISO 2811-11)

Value at +23 °C

Solid content by mass

Part A

~67 %

Part B

~100 %

Solid content by volume

Part A

~55 %

Part B

~100 %
System information

System Structure

Sikalastic®-701 can be used with the following system:

Layer

Product

Consumption

Localised Reinforcement

Sika Joint Tape SA®

Refer to Application Guide

PrimerRefer to "Substrate PreTreatment"

Refer to PDS of the respective primer

First CoatSikalastic®-625 N

0.75 L/m²

Second CoatSikalastic®-7010.4 L/m²
Technical Information

Tensile Strength

Temperature

Value

+23 °C

~10 MPa

-20 °C

~20 MPa

External Fire Performance

Broof T1 / Broof T4

(prEN 1187)

Reaction to Fire

Euroclass E

(EN 13501-1)

Chemical Resistance

Resistant to many chemicals. Contact Sika Technical Service for additional information.

Solar Reflectance

Initial Solar Reflectance

0,88

Thermal Emittance

Initial Thermal Emittance

0,86

Solar Reflectance Index

Initial SRI (Convective Coefficient, Medium Wind)

~112

Application

Application Information

Mixing Ratio

Part A : Part B = 80 : 20 (by volume)

Ambient Air Temperature

+2 °C min. / +40 °C max.

Relative Air Humidity

Above +20 °C

35 % min / 80 % max.

Below +20 °C

45 % min. / 80 % max.

Dew Point

Beware of condensation.
The substrate and uncured applied  membrane must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the membrane finish.

Substrate Temperature

+2 °C min. / +40 °C max.

Substrate Moisture Content

Refer to Product Data Sheet of the appropriate base layers

Pot Life

1 hour at +20 °C

Pot life will decrease at higher temperatures and increase at lower temperatures.

Tack Free Time

Condition

Property

Value

20 °C / 50 % RH

Tack free time

~45 minutes

20 °C / 50 % RH

Hard drying time

~60 minutes

20 °C / 50 % RHFinal drying time~90 minutes

Condition

Property

Value

5  °C / 50 % RH

Tack free time

~75 minutes

5 °C / 50 % RH

Hard drying time

~105 minutes

5 °C / 50 % RHFinal drying time~135 minutes

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

Applied Product Ready for Use

Temperature

Relative Humidity

Rain Resistant

Foot Traffic

Full Cure

+10 °C

50 %

~75 minutes

~150 minutes

~1 day

+20 °C

50 %

~60 minutes

~120 minutes

~1 day

+30 °C

50 %

~45 minutes

~90 minutes

~16 hours

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

Yield

~0,25 kg/m2 to 0,30 kg/m2 applied in a single coat
Application steps

SUBSTRATE PREPARATION

Confirm waiting /overcoating time has been achieved on the previously applied system base layer. The base layer must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and loose material. If dust exists on the surface, it must be completely removed before application of the product, preferably by vacuum extraction equipment.

If the maximum overcoating time of the base layer is exceeded, the surface must be lightly abraded using light abrasive manual tools or mechanical equipment to roughen the surface. Depending on the type of base layer, a solvent wipe may also be required. Finally, completely remove all the dust by vacuum extraction equipment.

MIXING

Prior to mixing all parts, mix separately Part A (resin) using an electric single or double paddle mixer and stirrer (300 to 400 rpm) or other suitable equipment. Mix liquid and all the coloured pigment until a uniform colour / mix has been achieved. Add Part B (hardener) to Part A and mix Part A + B continuously for 3,0 minutes until a uniformly coloured mix has been achieved. Mix full units only. Mixing time for A+B = ~3,0 minutes.

APPLICATION

Apply mixed product in 1 coat by roller, brush or spray equipment to achieve a consistent thickness and required surface finish.

CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use.  Hardened material can only be removed mechanically or with a proprietary paint stripper.

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