Preco Hydrotard

Preco Hydrotard chemical retarder is directly applied to
formwork to provide a simple, economic method of exposing
aggregates in freshly poured face down concrete, or
sprayed on the concrete surface for face up panels or slabs.
The action of Hydrotard products is to retard the hydration of
cement at the surface matrix of concrete.
Preco Hydrotard is available in two etch depths, it is colour
coded to particular depths of exposure as follows:
Lilac Light etch (1-2 mm)
Green Medium etch (2-4 mm)
The above depths are a guide which are based on grade
C30 concrete, with a maximum aggregate size of 20 mm.
Site trials are required to c