Product Data Sheet Show all documents

Sikalastic®-487

High performance, moisture-curing hand applied elastomeric polyurethane membrane

Sikalastic®-487 is a high performance, hand-applied, low VOC, moisture-curing single component elastomeric polyurethane 

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

Usage

Sikalastic®-487 is designed for the following waterproofing applications: Under-screed in wet areas  Under-screed on balconies  Non-UV applications  Podiums and decks  

Advantages

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

Packaging

15 Litres

Colour

Grey

Product Details

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

1.35-1.40 (g/cm3)

Viscosity

8,000 - 14,000 cP @30RPM

Volatile organic compound (VOC) content

180g/L
Technical Information

Shore A hardness

50 Shore A

Tensile strength

> 2 MPa

Tear strength

12 kN/m

Service temperature

-20 to +80°C

Dry film thickness

2 coats of a minimum of 680 microns (WFT) are required to achieve a 1.2mm dry film thickness.

Application

Application Information

Relative air humidity

Between 20 and 90%

Substrate temperature

+5 to +35°C

Substrate moisture content

Up to 5%

Waiting time to overcoating

In normal conditions, Sikalastic®-487 can be recoated with another layer of Sikalastic®-487 after one night and within 2 days. In case of rain or if the recoating interval was exceeded, light abrasion and reactivate Sikalastic®- 487 with Sika Thinner C or for the best results remove the existing coating back to substrate and re-apply.

Drying time

24 hours for full cure.
Application steps

SUBSTRATE PREPARATION

Surface must be clean, sound, smooth and dust-free as well as oil-free. A layer of diluted Sikalastic®-487 membrane (with 10% Thinner C) can be used as a primer for dry and contaminants-free concrete. In the case of high porosity, it is recommended to use an epoxy primer. Please see 'priming' section below for further information.

 

APPLICATION

PRIMER:

CONSUMPTION RATE:

Sikalastic® PU Primer

4m2 per Litre

Sikalastic® Moisture Seal  

Up to 10m2 per Litre (refer to pds)

Sikalastic®-487 (10% diluted Thinner C)4m2 per Litre

NOTES:

-The above consumption rates are indicative only and can fluctuate depending on porosity of surface being primed.

MEMBRANE APPLICATION:

Sikalastic®-487 can be applied with a brush or a roller to the desired thickness.

2 coats of 680 micron (WFT) are required to achieve a dry film thickness of 1.2mm.

Sikalastic®-487 can be subject to light foot traffic and screed applications after 24 hours.

CLEANING OF EQUIPMENT

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

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