Cretex PU

Surface Preparation
THOROUGH SUBSTRATE PREPARATION IS ESSENTIAL.
Remove all loose material – wire brushing is advisable. Sweep clean or vacuum. The surface must be free from grease, oil or other contamination. A gas torch will help to remove oil from the surface.
Priming
Cretex PU will bond to most concrete surfaces (including slightly damp, but not wet), without the need of priming. However, very dry, porous surfaces will need priming with Cretex PU Primer. See relevant Data Sheet.
Mixing
Having prepared the substrate, add hardener Part ‘B’ to resin Part ‘A’ and mix thoroughly for at least one minute. For best results use a heavy duty slow speed drill with a mixing paddle.
ENSURE THOROUGH MIXING AS AN UNMIXED PRODUCT WILL RESULT IN A POOR OR NON-CURE SITUATION.
Pour the mixed liquid into a large plastic bucket and gradually add the filler Part ‘C’, once all the aggregate has been added, continuue to mix for a minimum of 3 minutes until an even consistency is achieved at the desired thickness:
For a trowellable mix – add the entire quantity of filler Part ‘C’.
For a pourable mix – add HALF the quantity of filler Part ‘C’. This will produce a grout-like consistency ideal for pouring into smaller repairs.
Application
Apply the material immediately after mixing, using a trowel or float.
For supporting vertical repairs – where step nosings or expansion joint edges have broken away, the vertical face of the repair material should be supported to prevent slumping.
Suitable sized wooden shuttering should be covered with polythene to reduce adhesion, and should be removed as soon as the material is firm.
Application Thickness
The recommended range of application thickness is from 5mm to 10mm.