Sancon 100

Currently, more than 2,000,000 sq. ft. of rehabilitated sanitary sewer structures are in service using Sancon 100, a polyurethane coating designed and applied by Sancon Engineering, Inc.

Product Description

Sancon 100 is a plural component polyurethane protective coating system for concrete which uses a high adhesion and moisture tolerant epoxy base coat and a high build polyurethane elastomer top coat. The resulting system provides the adhesion of epoxy and the flexibility of polyurethane for a long lasting and durable coating system.

Recommended Uses

Sancon 100 was specifically developed for protecting concrete and steel surfaces exposed to the corrosive and abrasive environment of sanitary systems. The typical application involves coating below grade concrete in a live sewer environment.

Characteristics

The Sancon 100 system is a 100% solid, fast drying and fast curing protective lining, which develops high bond strengths to both dry and damp concrete. It contains no solvents to evaporate; therefore, no drying shrinkage occurs.

Sancon 100 polyurethane remains flexible throughout is life, yet is highly resistant to abrasion and impact.

Surface Preparation

Concrete - No surface preparation is required on clean concrete surfaces free from curing compounds, oils, existing coatings or other foreign materials. Grit blasting is required where the coating is subject to immersion service.

Deteriorated concrete surfaces must be cleaned by high-pressure water to sound concrete. The surface must be free of oil, grease, and soft concrete or existing coatings.

Steel - Steel surfaces require grit blast to near white metal. (SSPC SP-10) Primer must be applied to a dust free surface prior to surface rust appearing.

Application

Concrete - Epoxy and polyurethane are applied through plural component equipment, which mixes both components before the spray gun. Both materials are applied in one continuous coat until the desired thickness is reached. Recommended thickness for the epoxy coat is between 1 and 3 mils. Recommended thickness for the polyurethane is between 60 and 125 mils depending on the particular service requirements and the surface profile.

Application of the polyurethane must take place prior to the epoxy becoming tack free. Where the coating application cannot be completed in one continuous operation, or where a second coat is needed, a 2 mil thick prime coat of epoxy must be used for the adhesion of the polyurethane to the cured polyurethane in combination with surface preparation as recommended by the manufacturer.

Steel - Steel surfaces require polyurethane primer in lieu of epoxy. Primer thickness should be 1 to 2 mils. Sancon 100 thickness on steel is recommended at 40 mils.

For situations where rapid cure and higher levels of protection are required see Sancon 200.