Sikalastic®-518 Pronto Topcoat

Reactive acrylic resins

From date of production:

Sikafloor® Pronto Hardener must be protected from heat, direct sunlight, moisture and impact.

Sikalastic®-518 Pronto Topcoat and Sikafloor® Pronto Hardener: Store properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between 5 and 30 °C (41 and 86 °F). Materials must be protected from heat, direct sunlight, moisture and impact. The materials should be stored between 18 to 24 °C (65 to 75 °F) for 24 hours prior to use for optimum handling properties.

Do not store near open flame or an ignition source.

~ 0.98 kg/L (23 °C / 73 °F)

~ 100 %

~ 100 %

Short-term heat* up to 80 °C (176 °F) where exposure is only occasional (steam cleaning etc.)

*No simultaneous chemical and mechanical exposure and only in combination with Sikalastic®-511 / -532 Pronto as a broadcast system with approx. 3 - 4 mm thickness.

Resistant to many chemicals. Contact Sika technical service for specific information.

The amount of Sikafloor® Pronto Hardener required to be added to 9.5 L (2.50 US gal.) or 9.31 kg (20.52 lb) of Sikalastic®-518 Pronto is dependent on the ambient and substrate temperature.

The hardener powder can also be ordered under the product name Sikadur® VPC Part B (280 g / 9.87 oz bottle).

0 °C (32 °F) min. / 30 °C (86 °F) max.

~ 80 % R.H. max.

Beware of condensation! The substrate and uncured floor must be at least 3 °C (5 ˚F) above dew point to reduce the risk of condensation or blooming on the floor finish.

0 °C (32 °F) min. / 30 °C (86 °F) max.

Before overcoating Sikalastic®-518 Pronto allow:

1.2 - 1.4 m²/L (50 - 57 ft²/ US gal.) at ~ 28 to 32 mil d.f.t./w.f.t. (0.7 mm) depending on the system applied.

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc. For detailed info, refer to the system data sheet Sikalastic® Pronto RB-5700 PUMA.

Mix part A thoroughly to ensure uniform pigment dispersion, then add the Hardener in the correct quantity and mix for one (1) additional minute. Over mixing must be avoided to minimize air entrainment. For easy of handling, 18.9 L (5 US gal.) units may be split (refer to mixing table). Always measure out components.

Note: Factory-blended pigment may settle to bottom of pail over time. To optimize opacity of finished coat, inspect prior to addition of Sikafloor® Pronto Hardener. If unblended paste is discovered, use spatula or other tool to dislodge paste and mix to disperse in resin.

Mixing Tools:
Important: For indoor work, spark-free mixing equipment must be used (explosion-proof). Sikalastic®-518 Pronto Topcoat must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment.

Prior to application confirm r.h. and dew point. For exterior applications, apply while temperature is falling. If applied during rising temperatures “pin holing” may occur from rising air.

Seal Coat:
Immediately after mixing, pour the Sikalastic®-518 Pronto Topcoat onto the substrate and spread evenly by means of a lint-free, short-pile roller or squeegee and then back-rolled (crosswise) with a short-pile roller. A seamless finish can be achieved if a ‘wet’ edge is maintained during application.

Clean all tools and application equipment with Sika® Urethane Cleaner and Thinner immediately after use. Hardenedand/or cured material can only be removed mechanically.