Product Data Sheet Show all documents

Sikalastic®-836 DW

Polyurea spray applied  membrane for drinking water installations

Sikalastic®-836 DW is a 2-part pure polyurea, hot spray applied, elastic, very fast curing, waterproofing membrane. Provides a seamless, abrasion resistant finish with crack bridging abilities which is suitable for use in drinking water installations. Thickness ≥ 2 mm.

  • Seamless
  • 100 % solids
  • Very fast setting
  • Good crack bridging properties
  • Good abrasion resistance
  • German standards drinking water facilities tested
  • Performs in constant dry temperatures from -30 °C to +130 °C
Product Data Sheet Show all documents

Usage

  • Internal lining for concrete drinking water tanks
  • Internal lining for food stuff storage facilities
  • Filtration tanks
  • Sea water desalination plants
 

Advantages

  • Seamless
  • 100 % solids
  • Very fast setting
  • Good crack bridging properties
  • Good abrasion resistance
  • German standards drinking water facilities tested
  • Performs in constant dry temperatures from -30 °C to +130 °C

Packaging

Part A (ISO)

205 kg, drum

Part B (Resin)

225 kg, drum

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • WRAS Approval No. 2007541, 24hr at 25°. Test Report: MA7020/E/1 & MA7516/F20.0 7255412007541
Product Information

Chemical Base

Pure polyurea

Shelf Life

Part A (ISO)

12 months from date of production

Part B (Resin)

12 months months from date of production

Storage Conditions

Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.

Density

Part A (ISO)

~1,12g/cm³

Part B (Resin)

~1,00g/cm³

Solid content by mass

~100 %

 

Technical Information

Shore D Hardness

~48

(EN ISO 868:2005)

Abrasion Resistance

<3000mg

H22/ 1000/ 1000

Tensile Strength

~17 MPa

(ISO EN 527-1:2012)

Tear Strength

~100 kN/m

(ISO EN 34-1:2010)

Application

Application Information

Mixing Ratio

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

Layer Thickness

min. 2 mm

Ambient Air Temperature

-20 °C min. / +40 °C max.

Relative Air Humidity

< 85 %

Dew Point

Beware of condensation. The substrate and uncured coating finish must be at least 3 °C above dew point to reduce the risk of condensation.

Substrate Temperature

-15 °C min. / +70 °C

Curing Time

24 hours at +20 °C full cure
Consumption

Consumption

~1,1 kg/m²/mm
Application steps

SUBSTRATE QUALITY

Cementitious substrates (concrete) must be sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum tensile strength of 1,5 N/mm2.

Substrates must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc.

SUBSTRATE PREPARATION

Cementitious substrates must be prepared mechanically using suitable abrasive blast/water jetting cleaning equipment to remove cement laitance and achieve an open textured surface profile suitable for the product thickness.

Weak cementitious substrates must be removed and surface defects such as blow holes and voids must be fully exposed.

Repairs to the substrate, filling of cracks, blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor®, Sikadur® and Sikagard® range of materials. Products must be cured before applying Sikalastic®-836 DW

All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by vacuum extraction equipment.

MIXING

Dose and mix with a suitable air driven or electrical plural component heated spray equipment. Both components must be heated up to +70 °C. The accuracy of mixing and dosage must be controlled regularly with the equipment. Thoroughly stir part B (Resin) using a drum stirrer until a consistent colour is obtained.

 

CLEANING OF TOOLS

Clean all tools with Thinner C immediately after use. Spray equipment has to be cleaned and filled with Mesamoll. Hardened material can only be removed mechanically.

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