Sikalastic®-622 Excel Top PLUS

AS4654.1 2012- Waterproofing membranes for external above-ground use (BRANZ)

12 months from date of manufacture in original, sealed containers, if the storage conditions are met.

Store in dry, weatherproof environment, protected from direct sunlight at temperatures between +5°C and +25°C.

1,000 ± 300 cps @ 27°C

Please refer to the SikaRoof® MTC-12 UV system data sheet for typical roof top membrane system build up.

Dry film thickness (DFT): 350 micron

The substrate temperature must be a minimum of 3°C above due point during application and cure.

Substrate moisture content should not exceed 6% by weight, determine maximum moisture content of substrate with a Tramex CME or CM Expert type concrete moisture meter.

Sikalastic®-622 Excel Top PLUS may be recoated with another layer after the previous coat is tack free, up to a maximum interval of 48 hours after the application of the preceding coat. In case of rain or if the overcoating interval has been exceeded, the surface must be lightly abraded and wiped with Sika® Thinner C, allow to flash off prior to application of the next layer.

In the event of unforeseen rain event or delays beyond the stated recoat window referenced in each product’s current PDS, observe the following.

Allow 16 hours between coats. Allow longer in adverse weather conditions.

Allow a minimum of 72 hours curing prior to pedestrian traffic.

Wet film thickness (WFT): 475 micron 

Approximately 40m2 per 18.9L pail

All surfaces to be waterproofed must be firm, clean, dry, structurally sound and smooth. All grease, oil, wax, curing compounds, dust, loose material, laitance and other contaminants must be removed. All projections and rough spots should be dressed off to achieve a level surface. The substrate surface must be continuous and not pond water. If in doubt apply a test area first Sika® Polyurethane Base Coat and Top Coats – Coating should be cured and tack free.

Thoroughly mix coating using a mechanical mixer at slow speed until a homogenous mixture and uniform colour is obtained (typically 1 minute). Use care not to allow the entrapment of air into the mixture.

Apply at the recommended coverage rate (see appropriate System Guide) using a notched squeegee or trowel, and backroll using a phenolic resin core roller. Allow coating to cure a minimum of 16 hours at 20°C and 50 % R.H. or until tack fee between coats. Allow coating to cure for a minimum of 72 hours before opening to pedestrian traffic.

Remove liquid coating immediately with a dry cloth, clean tools and equipment with Sika^® Colma Cleaner while the material is still wet. Use disposable brushes and roller sleeves. Cured coating can only be removed mechanically.