Fosroc Preco RWB 20L

Fosroc Preco RWB 20L is a high-performance surface retarder designed to expose aggregate in freshly placed horizontal concrete. It creates a uniform, controlled depth of retardation, allowing for an exposed aggregate finish or a textured surface that serves as a mechanical key for subsequent pours, renders, or toppings. Ideal for use in architectural concrete, pavements, floors, and precast panels, Preco RWB offers a clean, efficient alternative to mechanical surface preparation.

Features + Benefits:

Controlled Surface Retardation: Allows for consistent exposure of aggregate or surface keying across large areas.
Excellent Bond Key: Creates an ideal textured surface for bonding new concrete or renders without hacking or scabbling.
Easy Reveal: Treated surfaces can be cleaned with a stiff broom or pressure hose after curing.
Flexible Time Window: Provides effective surface exposure up to 24 hours after application under normal conditions.
Versatile Application: Suitable for horizontal concrete applications including floors, pavements, slabs, and precast elements.
Economical & Labour-Saving: Reduces the need for intensive manual surface preparation, saving time and effort.

Product Uses:

- Producing exposed aggregate finishes on slabs, pavements, and decorative concrete - Creating textured surfaces for improved bonding with subsequent concrete pours or render layers - Ideal for precast concrete walls and horizontal formwork

Pack Size:

Size: 20 Litres
Type: Surface retarder for horizontal concrete
Application Method: Apply to fresh concrete surface immediately after finishing
Removal: Jet hose or stiff broom after curing period (up to 24 hours)