Comtech Surface Retarder 20L

Comtech Surface Retarder is a specialized additive engineered to delay the surface setting of fresh concrete. By applying this liquid retarder to the formwork or directly onto the surface before stripping, you can effectively control the hydration process at the surface layer. This allows for the removal of the top layer of cement paste, revealing the underlying aggregate for a durable and aesthetically pleasing exposed aggregate finish.

Ideal for precast concrete manufacturers and construction teams seeking high-quality textured surfaces, this retarder ensures uniform exposure of aggregates without affecting the overall structural strength of the concrete. It is particularly effective in producing decorative pavements, architectural facades, and precast panels with a consistent, professional appearance.

• Controls surface setting time for precise aggregate exposure
• Enhances the durability and visual appeal of exposed aggregate finishes
• Suitable for both precast and cast-in-place concrete applications
• Provides consistent texture and color uniformity across large surfaces
• Compatible with standard concrete mixes and formwork systems