Product Data Sheet Show all documents

Sikalastic®-822

Hand applied liquid waterproofing membrane

Sikalastic®-822 is a 2-part elastic, crack bridging, hand applied polyurethane membrane.

  • excellent crack bridging properties
  • Highly elastic waterproofing membrane
 
Product Data Sheet Show all documents

Usage

  • As waterproofing membrane underneath hot poured asphalt on bridge and car park decks
  • As waterproofing membrane for other concrete structures and non-trafficked concrete areas with an additional top coat for UV protection
  • As repair kit for Sikalastic®-821 LV
  • As waterproofing for upstands and details on torched bituminous membranes

Advantages

  • excellent crack bridging properties
  • Highly elastic waterproofing membrane
 

Packaging

Part A: 21 kg drumPart B. 14 kg drum

Colour

grey, approx. RAL 7005

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Polymer Institute Dr. Stenner GmbH, test report P 1700-1 and P1700-2, confirmation with requirements of ZTV-BEL-B, part 3, 1995
  • Kiwa Polymer Institute, test report 5879, additional testing according ETAG 033
  • Otto-Graf-Institute, University of Stuttgart, test report 16-31835, fire behaviour according DIN 4102, part 7
Product Information

Chemical Base

2-component polyurethane resin

Shelf Life

6 months from date of production

Storage Conditions

Store properly in original, unopened and undamaged sealed packaging in dry conditions.  Protect from direct sunlight and frost.

Density

Part A: ~1.69 kg/l Part B: ~1.05 kg/l

Mixed resin: ~1.33 kg/l

Solid Content by Weight

~96 %

Viscosity

Part A: ~14 500 mPa·sPart B: ~9 300 mPa·s
Technical Information

Tensile Strength

~4.4 N/mm²

(DIN 53504)

Crack Bridging Ability

up to 0.3 mm at -20 °C

Chemical Resistance

resistant to de-icing salts, bitumen and alkalis

Thermal Resistance

short term resistant to mastic asphalt up to +240 °C

Application

Application Information

Mixing Ratio

Part A : Part B = 60 :40 (by weight)

Layer Thickness

Min. 2 mm

Ambient Air Temperature

+8 °C min. / +40 °C max.

Relative Air Humidity

max. 85 %

Dew Point

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

Substrate Temperature

+8 °C min / +40 °C max.

Substrate Moisture Content

≤  4% according CM method

Pot Life

Temperature

Time

+10 °C

~40 minutes

+20 °C

~30 minutes

+30 °C

~20 minutes

+40 °C~10 minutes

Waiting Time / Overcoating

Before applying Sikalastic®-823 / Sikalastic®-825 allow:

TemperatureMinimum

Maximum

+10 °C

16 hours

1 month1)

+20 °C

12 hours

1 month1)

+30 °C

10 hours

1 month1)
+40 °C8 hours1 month1)

1) Assuming that dirt has been removed properly and contamination is avoided
Consumption

Consumption

~1.33 kg/m²/mm
Application steps

MIXING

Prior to mixing stir part A mechanically. When all of part B is added to part A mix continuously for 3 minutes until a uniform mix has been achieved. To ensure thorough mixing pour material in a clean container and mix again to achieve consistent mixOver mixing must be avoided to minimise air entrapment.

APPLICATION

Sikalastic®-822 is poured and then spread evenly with a notched / toothed trowel. Roll immediately in cross wise with a spiked roller to ensure even thickness andto remove any entrapped air.

CLEANING OF TOOLS

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

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