Product Data Sheet Show all documents

Sikalastic® M 689

(former MasterSeal® M 689)

A highly elastic, ultra-fast curing, spray applied 100 % polyurea membrane for use in waterproofing applications

Sikalastic® M 689 is a 2- part, solvent-free, pure polyurea, hot spray applied, elastic, very fast curing, waterproofing and protection membrane. The fast curing allows an immediate return-to-service time and the spray application allows fast coverage of the substrate.

  • Low emission (conform to AgBB)
  • Low viscosity
  • Excellent bond to substrate
  • High moisture tolerance
  • ultra-fast curing
  • Monolothic membrane
  • Excellent chemical resistance
  • Waterproof and resistant to standing water
  • Fully bonded to substrate
  • High water vapour permeability
  • High resistance to carbon dioxide diffusion
  • High abrasion and impact resistance
  • High elasticity and crack bridging capability
  • Thermoset – does not soften at high temperatures
Product Data Sheet Show all documents

Usage

Sikalastic® M 689 may only be used by experienced professionals. It is used in a variety of waterproofing applications, especially where a high degree of chemical and mechanical resistance is required.   This includes:
  • Waste water treatment plants (urban and industrial), both in the inflow and outflow areas.
  • Sewage effluent pipelines.
  • Steel and concrete pipes.
  • Secondary containment bunds in chemical and petro-chemical industries.
Additionally, Sikalastic® M 689 can be applied on:
  • Flat and architectural roofs.
  • Horizontal and vertical substrates.
  • Internal and external areas.
  • Concrete, cementitious mortar or steel substrates.
  • Reinforced concrete to protect it against carbonation, chloride induced corrosion or chemical attack in industrial environments.
Contact your local Sika representative regarding any application required not mentioned here.  

Advantages

  • Low emission (conform to AgBB)
  • Low viscosity
  • Excellent bond to substrate
  • High moisture tolerance
  • ultra-fast curing
  • Monolothic membrane
  • Excellent chemical resistance
  • Waterproof and resistant to standing water
  • Fully bonded to substrate
  • High water vapour permeability
  • High resistance to carbon dioxide diffusion
  • High abrasion and impact resistance
  • High elasticity and crack bridging capability
  • Thermoset – does not soften at high temperatures

Packaging

Part A (Polyamine)

200 kg drums

~203 litres

Part B (Isocyanate)

225 kg drums

~203 litres

Colour

Sikalastic® M 689 is available in the following colour combination:

Part A:

  • Dark grey close to RAL 7043, 

  • Medium grey close to RAL 7042, 

  • Light grey close to RAL 7035

  • Black

  • Colourless (to be coloured with Sika authorized pigment paste by approx. 3–5 %. Stir well before use!) 

Part B: Unpigmented

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • CE Marking and Declaration of Performance to EN 1504-2 - Surface protection product for concrete - Coating

 
Product Information

Product Declaration

EN 1504-2: Surface protection product for concrete - Coating

Composition

Pure polyurea

Shelf Life

Part A: 12 months from date of production

Part B: 9 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +15 °C and +25 °C. Do not expose to direct sunlight. Always refer to packaging.

Density

Part A

~1.01 kg/l

Part B

~1.11 kg/l

Mix

~1.10 kg/l

Values at +20 °C

Viscosity

Temperature

Part A

Part B

+25 °C

220 mPas

800 mPas
Technical Information

Shore A Hardness

> 90

Shore D Hardness

> 40

Mechanical Resistance

< 150 mg

H22 / 1000 g / 1000 cy

Resistance to Impact

> 20 Nm (Class III)

(EN ISO 6272/2)

Tensile Strength

> 20 N/mm²

Crack Bridging Ability

Class A5

Static

Class B4.2 (-20 °C)

Dynamic

Tear Strength

58 N/mm²

(DIN 53515)

Skid / Slip Resistance

63 (Class II)

Dry

30

Wet

Service Temperature

-30 °C min. / +130 °C max.

dry

0 °C min. / +80 °C max.

high moisture, but not wet

0 °C min. / +55 °C max.

wet

Capillary Absorption

0.002 kg/m2/h0.5

(DIN EN 1062-3)

Permeability to Water Vapour

Sd value H2O < 5m

Permeability to Carbon Dioxide

Sd value CO2> 120m

Chemical Resistance

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

Behaviour after Artificial Weathering

no changes

(EN 1062-11)

Reaction to Fire

Cfl-s1

(DIN EN 13501-1)

Application

Application Information

Mixing Ratio

Part A : Part B = 1 : 1 (by volume)

Layer Thickness

> 2 mm

Product Temperature

> +70 °C

Ambient Air Temperature

+5 °C min. / +35 °C max.

Relative Air Humidity

< 90 %

Dew Point

Beware of condensation.

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

Substrate Temperature

+5 °C min. / +35 °C max.

Substrate Moisture Content

< 4 %

Curing Time

Final cure ~24 hours at +20 °C 

Time is approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

Gel Time

~8 seconds at +20 °C
Consumption

Consumption

~1.10 kg/m²/mm
Application steps

EQUIPMENT

Reference must be made to the Sika® Method Statement: Sikalastic® M 689

SUBSTRATE QUALITY

Reference must be made to the Sika® Method Statement: Sikalastic® M 689

SUBSTRATE PREPARATION

Reference must be made to the Sika® Method Statement: Sikalastic® M 689

MIXING

Reference must be made to the Sika® Method Statement: Sikalastic® M 689

Note: Both components must be heated up to +70 °C.

The accuracy of mixing and dosage must be controlled regularly with the spray equipment. Thoroughly stir Part A (Amine) using a drum stirrer until a uniform consistent colour is obtained.

 

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. Prior to application, confirm substrate moisture content, relative air humidity, dew point, substrate, air and product temperatures. Reference must be made to the Sika Method Statement: Sikalastic® M 689

CLEANING OF TOOLS

Clean all tools with Thinner C immediately after use. The application equipment must cleaned and filled with Mesamoll. Hardened material can only be removed mechanically.

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