Product Data Sheet Show all documents

Sikalastic®-702

Elastic polyurea hybrid liquid applied membrane for roof waterproofing

Sikalastic®-702 is a 2-part, elastic, hybrid polyurea based liquid applied roof waterproofing membrane. It is part of the SikaRoof® PUR liquid applied roofing solutions range of products.

  • Cold applied - requires no heat or flame
  • One layer application
  • High elasticity and elongation at break
  • No reinforcement required
  • Self-smoothing
  • Applied by notched rubber or metal squeegees
  • Good adhesion to many substrates with the appropriate primers
  • Can be covered with an aliphatic top coat
  • Resistant to ponding water
Product Data Sheet Show all documents

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Root resistance DIN CEN/TS 14416, Sikalastic®-702, kiwa, Test report No. 0078.0.1-2019e

  • CE Marking and Declaration of Performance to ETAG 005-1-6:2004, Liquid-applied roof waterproofing using kits based on polyurethane

  • Fire Testing EN 13501-5, Sikalastic®-701, warringtonfire, Report No. 19895B, 19895C

  • Fire Testing EN 13501-1, Sikalastic®-701 warringtonfire, Report No.19896B
Product Information

Chemical Base

Elastomeric PU/PUA hybrid

Shelf Life

12 months from date of production

Storage Conditions

Product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

 

Density

~1.24 kg/L (Mixed A+B)

Solid Content by Weight

~100 % (Part A & B)

Solid Content by Volume

~100 % (Part A & B)

Volatile Organic Compound (VOC) Content

~0.07 g/L
System information

System Structure

System

  • Sikalastic®-702

  • Refer to the System Data Sheet: SikaRoof® PUR Systems

  • Primers

Substrate 

Primer

Cementitious substrates                                                

Sika® Concrete Primer LO or Sikafloor®-161 lightly broadcast with quartz sand, 0.3–0.8 mm

Ceramic tiles (unglazed), and concrete slabs

Sika® Concrete Primer LO

Bituminous felt

Sikalastic® Metal Primer N

Bituminous coatings

Sikalastic® Metal Primer N

Metals & Ferrous or galvanised metals, lead, copper, aluminium, brass or stainless steel

Sikalastic® Metal Primer N

For the primer consumption rates and waiting time / overcoating, refer to the appropriate Product Data Sheet.

Other substrates must be tested for their compatibility. If in doubt, apply a test area first.
Technical Information

Shore A Hardness

~75

Resistance to Root Penetration

Root resistant

Tensile Strength

~10.0 N/mm2

Tensile Adhesion Strength

~2.5 N/mm2

Value measured using Sika® Concrete Primer LO

Tear Strength

~13.8 N/mm2

Chemical Resistance

Resistant to many chemical based cleaners. Contact Sika Technical Services for additional information.

External Fire Performance

Broof T1 / Broof T4 

(ENV 1187)

Reaction to Fire

Euroclass E 

(EN 13501-1)

Dry film thickness

Refer to the System Data Sheet: SikaRoof® PUR Systems

Application

Application Information

Mixing Ratio

Part A : Part B = 1 : 1.72 (by weight)

Product Temperature

+10 °C min. / +25 °C max.

Ambient Air Temperature

+2 °C min. / +40 °C max.

Relative Air Humidity

35 % r.h. min / 80 % r.h. 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

The product can be applied on substrates with a moisture content of ≤ 4 % part by weight. The substrate must be visibly dry with no standing water.

The following test methods can be used to determine the substrate moisture content:

  • Sika®-Tramex meter

  • CM-measurement

  • Oven-dry-method

No rising moisture according to ASTM (Polyethylene-sheet).

Pot Life

~25 minutes at +20 °C Pot life will decrease at higher temperatures and increase at lower temperatures.

Applied Product Ready for Use

Temperature

Relative Humidity

Rain Resistant

Foot Traffic/Overcoating

Full Cure

+10 °C

~50 %

~3 hours

~10 hours

~28 hours

+20 °C

~50 %

~2 hours

~6 hours

~24 hours

+30 °C

~50 %

~1 hour

~4 hours

~20 hours
Application steps

SUBSTRATE PREPARATION

  • The supporting structure must be of sufficient structural strength to apply all new and existing layers of the roof build-up. Complete roof system must be designed and secured against wind uplift loadings.

  • Refer to the Sika Method Statement: SikaRoof® PUR roof waterproofing systems

  • Suitable substrates: Concrete, bituminous felts and coatings, metal, brickwork, asbestos cement, ceramic tiles.

MIXING

Refer to the Sika Method Statement: SikaRoof® PUR roof waterproofing systems

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.

Refer to the Sika Method Statement: SikaRoof® PUR roof waterproofing systems

CLEANING OF TOOLS

Clean all tools and application equipment with Thinner C or similar, immediately after use. Hardened material can only be removed mechanically.

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