Sikalastic-100 EP Primer — The Professional's Choice for Membrane Adhesion
When your waterproofing membrane is only as good as what it bonds to, you need a primer that performs. Sikalastic®-100 EP Primer is a two-component, 100% solids, solvent-free epoxy primer engineered specifically for use with Sikalastic® liquid-applied membrane systems. Its ultra-low viscosity drives deep into concrete and screed substrates, creating a tenacious bond that holds up in the most demanding environments — from commercial rooftops to industrial floors and water-retaining structures.
Available exclusively through Epoxy Warehouse, your authorised Sika distributor in Australia, this product is backed by Sika's global expertise.
Why Choose Sikalastic®-100 EP Primer?
- 100% Solids / Solvent-Free: No harmful solvents, very low VOC — safer for applicators and the environment.
- Deep Substrate Penetration: Low viscosity formula seeps into the pores of concrete and screeds for maximum mechanical adhesion.
- Fast Cure: Overcoat in as little as 8 hours at 20°C, keeping your project on schedule.
- AS4020:2018 Approved: Certified for use in contact with potable drinking water — suitable for water tanks, reservoirs, and wet areas.
- Versatile: Works as a primer and a patching compound/mortar when blended with silica sand.
- Acceleratable: Can be used with Sikafloor® Booster to speed up cure in cold conditions.
Suitable Substrates
- Concrete substrates
- Cement screeds
- Epoxy screeds
Mixing & Application
Mix Part A and Part B at a 2:1 ratio by volume and mass for a minimum of 2 minutes until fully homogeneous. Apply by roller or brush. Clean all tools immediately after use with Thinner C. Hardened material can only be removed mechanically.
Important Application Conditions
- Do not apply on substrates with rising moisture.
- Protect freshly applied primer from damp, condensation, and water for at least 24 hours.
- For external applications, apply on a falling temperature to prevent pin-holing from rising air.
- All membrane applications must be applied within a 36–48 hour window after priming.
About Epoxy Warehouse — Authorised Sika Distributor
Epoxy Warehouse is one of Australia's leading suppliers of professional-grade epoxy flooring and waterproofing systems. As an authorised Sika distributor, we supply the full range of Sikalastic primers, membranes, and accessories. Whether you're a DIY enthusiast or a professional applicator, we have the products, and support to get the job done right.
