Sika Sikalastic 851 (413 KG) Polyurea

Sikalastic®-851 – Fast-Curing Polyurethane/Polyurea Hybrid Waterproofing Membrane

Sikalastic®-851 is a two-part, elastic, 100% solids waterproofing membrane with ultra-fast curing and exceptional performance for concrete and steel substrates. This polyurethane/polyurea-hybrid coating delivers long-lasting protection in demanding environments, including bridge decks, car parks, water treatment structures, and submersed infrastructure.

Key Benefits:

• Ultra-Fast Curing – Return-to-service in record time

• Wide Application Range – Effective in temperatures from -10°C to +50°C

• High Performance – Withstands dry temperatures from -30°C to +100°C

• Crack Bridging – Excellent flexibility and resilience

• Abrasion Resistant – Built for durability in high-traffic areas

• Moderate Chemical Resistance – Suitable for industrial environments

• Not UV Resistant – Requires topcoat for exposed surfaces

Typical Uses:

On Concrete:

• Bridge deck waterproofing (certified under BBA/HAPAS & ETAG 033)

• Tank, bund, and pit lining in fresh water zones

• Submerged and below-grade structures

• Walkways, balconies, and car park decks

• Power plant water retention structures

On Steel:

• Truck bed lining

• Heavy-duty, abrasion-prone metal surfaces

Compatible Primers:

• Sika® Concrete Primer – For cement-based surfaces

• Sika® Bonding Primer – Water-based epoxy to enhance adhesion

TDS

Primers

Sika® Concrete Primer is a two-component, rapid curing, high solids, polyurea/polyurethane-hybrid primer for consistent and durable adhesion of SikaRoof® MTC, Sikalastic® and Sikafloor® Systems on cement based substrates.

Sika® Bonding Primer is a two-component, water based epoxy primer to consolidate substrates and enhance the adhesion of Sikafloor® and Sikagard® products

Click here for Sika relevant polyurea primers

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