Sikalastic®-701
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)
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
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
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 Structure
Sikalastic®-701 can be used with the following system:
| Layer | Product | Consumption |
| Localised Reinforcement | Sika Joint Tape SA® | Refer to Application Guide |
| Primer | Refer to "Substrate PreTreatment" | Refer to PDS of the respective primer |
| First Coat | Sikalastic®-625 N | 0.75 L/m² |
| Second Coat | Sikalastic®-701 | 0.4 L/m² |
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
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 % RH | Final 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 % RH | Final 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.
Yield
~0,25 kg/m2 to 0,30 kg/m2 applied in a single coat
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.