Description
Sikalastic®-487 is a high performance, hand-applied, low VOC, moisture-curing single component elastomeric polyurethane.
USES
Sikalastic®-487 is designed for the following waterproofing applications: Under-screed in wet areas Under-screed on balconies Non-UV applications Podiums and decks
CHARACTERISTICS AND 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
COLOUR
Grey
PACKAGING
15 Litres
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.
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.
Sikalastic 487 Technical and Safety Data Sheets
Sikalastic®-487 – Sika’s Website
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