Product Data Sheet Show all documents

Sikalastic®-777

Root-resistant polyurethane waterproofing membrane 

Sikalastic®-777 is a high performance, hand-applied, low VOC, moisture-curing single component elastomeric polyurethane membrane with excellent root-resistance properties.

  • Excellent root resistance properties
  • Low VOC, complies with Green Star requirements
  • UV resistant
  • Quick tack-free surface
  • High resistance to stagnant water
  • High resistance to puncture
  • High elongation, Class III membrane >300% according to AS/NZ4858
  • Single component, ready to use
Product Data Sheet Show all documents

Usage

Sikalastic®-777 is designed for the following waterproofing applications:
  • Planter boxes
  • Retaining walls
  • Foundation and basement walls
  • Below ground applications
 

Advantages

  • Excellent root resistance properties
  • Low VOC, complies with Green Star requirements
  • UV resistant
  • Quick tack-free surface
  • High resistance to stagnant water
  • High resistance to puncture
  • High elongation, Class III membrane >300% according to AS/NZ4858
  • Single component, ready to use

Packaging

15 Litres

Colour

Black

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

AS/NZS 4654.1:2012- Waterproofing membranes for external above-ground
Product Information

Composition

Single-pack moisture curing polyurethane

Shelf life

9 months

Storage conditions

From date of production if stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5°C and +30°C.

Density

1.30-1.35 (g/cm3) 

Viscosity

10,000 - 18,000 cP @30RPM

Volatile organic compound (VOC) content

250g/L
Technical Information

Shore A hardness

70 Shore A

 

Tensile strength

6 MPa

Tear strength

20 kN/m

Service temperature

-20 to +80°C

Application

Application Information

Relative air humidity

Between 20 and 90%

Substrate temperature

+5 to +35°C

Substrate moisture content

Up to 5%

Curing time

24 hours for full cure.

Waiting time to overcoating

In normal conditions, Sikalastic®-777 can be recoated with another layer of Sikalastic®-777 after one night and within 2 days. In case of rain or if the recoating interval was exceeded, light abrasion and reactivate Sikalastic®-777 with Sika Thinner C or for the best results remove the existing coating back to substrate and re-apply.

Drying time

Sikalastic®-777 can be subject to light foot traffic after 24 hours.
Application steps

SUBSTRATE PREPARATION

Surface must be clean, sound, smooth and dust-free as well as oil-free. In the case of a high porosity substrate, it is recommended to use an epoxy primer. Please see 'priming' section below for further information.

 

CLEANING OF EQUIPMENT

Reusable tools should be cleaned carefully with Sika Thinner C before curing.

 

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