TL-0005 - Curing Compounds and Form Release Agents Technical Letter
Curing compounds used on any concrete to be waterproofed with Bituthene® membrane or Procor® membrane must not contain wax, oil, silicone or pigment.
Acceptable types of curing compounds include:
- Petroleum resin
- Chlorinated rubber
- Styrene butadiene
Sometimes surface hardeners may be referred to as curing compounds. Common surface hardeners include:
- Sodium silicate
- Zinc or magnesium fluorosilicate
Bituthene® waterproofing membrane may be used over these materials.
Form Release Agents
All non-transferring commercial form release agents, when applied in accordance with the manufacturer’s instructions, are acceptable. Diesel fuel or other types of petroleum oils can adversely impact adhesion of Bituthene® and Procor® Membranes if transferred to the concrete.
A test application or job mock-up would be recommended to ensure compatibility.
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Last Updated: 2021-02-05