Industrial flooring
Cement self-levelling floor screed
A one-part modified cement-polymer self-levelling screed, applied over a BestBond EP759 epoxy bonding coat to create a smooth, flat floor for light-to-medium load areas.
Public technical guidance
This page is selection and sequencing guidance, not a project method statement. The current product TDS, approved design, site assessment and trial application take precedence; structural anchors, cracks, water-retaining structures and other safety-critical work require qualified technical review.
Applicable for
- Repairing and reconstructing floor surfaces damaged by chemical attack, impact or mechanical abrasion during service.
- Restoring the flatness of floors before laying PVC tiles, carpet or specialised finish coatings on top.
- Concrete floors under light-to-medium loads such as factory floors, laboratories, clean rooms, hospitals, car parks, swimming pool bottoms and water tanks.
Substrate requirements
- The concrete floor must reach a minimum compressive strength of 20 MPa and a minimum tensile strength of 1.5 MPa, and suit the actual service loads.
- Fully remove any loose patches or weak concrete by mechanical means.
- Thoroughly clean off all oil and grease stains using the correct method.
- Treat, repair and patch cracks, voids and defective spots as required.
Step-by-step procedure
- 1
Surface preparation and profiling
Grind the whole concrete floor to a preliminary level with a dust-extracting grinder, then shot-blast the entire surface to create a rough profile and vacuum-clean it thoroughly with an industrial dust extractor.
- 2
Apply the bonding coat
Using a roller (or a pressure sprayer), apply the BestBond EP759 bonding coat over the entire concrete surface at an average rate of 0.2 – 0.25 kg/m² (depending on surface condition).
- 3
Pour the self-levelling screed
Mix BestFloor PC302 with about 12% water by powder weight (approximately 3 L per 25 kg bag) at no more than 400 rpm for about 5 minutes. While EP759 is translucent but still wet, apply PC302 at 2–5 mm per layer; consumption is about 1.95 kg/m²/mm, or 5.85 kg/m² at 3 mm.
- 4
Curing
Protect the screed from direct sunlight and harsh weather; cure the layer within 24 hours after placement using water, damp burlap or a plastic sheet cover.
- 5
Inspect and touch up
24 hours after placing the self-levelling screed, inspect the whole surface and repair or touch up any damaged or non-conforming areas if present.
Overall consumption: about 0.2 – 0.25 kg/m² of BestBond EP759 bonding coat plus about 5.85 kg of dry BestFloor PC302 powder per m² for a 3 mm thickness.
Common questions
Which product should I use to self-level a 3 mm concrete floor?
Use BestFloor PC302, a one-part cement-polymer self-levelling mortar, applied over a BestBond EP759 epoxy bonding coat for strong adhesion to the concrete.
What is the material consumption for a 3 mm self-levelling layer?
About 5.85 kg of dry BestFloor PC302 powder per m² at 3 mm thickness, plus 0.2 – 0.25 kg/m² of BestBond EP759 bonding coat.
How long before the floor can be checked and put into use?
Cure the screed for 24 hours; after 24 hours inspect the whole surface and touch up any defective spots before applying finishes or opening it to traffic.
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