PatchBond epoxy
Rayson MortarBond EM90
Rayson MortarBond EM90 is a three-pack, solvent-free epoxy mortar — resin, hardener and graded aggregate — that reinstates concrete floors with a non-shrink, highly abrasion-resistant repair.
View productRayson PurScreed PC70
Rayson PurScreed PC70 is a four-part, water-based polyurethane-cement self-smoothing screed installed at 1.5–3 mm for medium to heavy-duty industrial floors with high chemical resistance.
Best for
Best for food and beverage production, chemical processing and hard-traffic industrial floors that need a tough, chemically resistant screed.
Overview
PurScreed PC70 combines four pre-weighed parts into a coloured, self-smoothing polyurethane-cement hybrid screed. Installed at 1.5–3 mm by steel trowel, it produces a floor with tough mechanical and chemical resistance for rough, high-traffic industrial service.
Adhesion to mechanically prepared concrete is exceptional — in bond testing the concrete fails before the screed does. The four-part system is flexible in use: it can serve as primer, base coat or wear coat within heavy-duty build-ups, and it handles highly absorbent substrates.
PU-cement screeds are the default choice where epoxies run out of headroom — the production, wash-down and processing floors of food, beverage and chemical facilities. Match the grade and thickness to your loading and exposure with our technical team.
Recommended uses
- Medium to high loading self-smoothing screeds at 1.5–3 mm
- Food and beverage production and processing floors
- Chemical processing and wash-down areas
- Primer, base coat or wear coat within heavy-duty industrial flooring systems
Suitable substrates
- Mechanically prepared concrete (minimum 28 days old, moisture content below 5%)
- Highly absorbent substrates
- Substrate pull-off strength above 1.5 N/mm² after preparation
Key benefits
- Tough mechanical and chemical resistance for hard industrial service
- Bond strength to concrete exceeds the concrete itself
- Self-smoothing coloured screed at 1.5–3 mm in one operation
- Water-based four-part system supplied in pre-weighed units
System position: Body coat
A body coat builds the main thickness and mechanical performance of the floor, applied over a primer and usually sealed with a finish.
Application method
- Steel trowel
Technical information
The figures below are a guide for planning. Site conditions and workmanship affect results — confirm the details for your project with our technical team.
| Coverage | 1.8 kg/m² per mm of thickness (varies with substrate condition) |
|---|---|
| Mixing | Combine Parts A, B, C and D in the sequence stated in the current PurScreed PC70 method statement; mix mechanically until uniform; pot life 15–20 minutes at 30 °C |
| Drying & curing | Final cure 7 days |
| Pack sizes | Part A 3 kg / Part B 3 kg / Part C 14 kg / Part D 0.5 kg per set |
Limitations
- Minimum substrate temperature 5 °C; curing between +10 °C and +35 °C; concrete moisture content maximum 5%
- Short pot life (15–20 minutes at 30 °C); cures faster in hot weather — batching and placement must be continuous
- Standard colours light grey and green; other colours on request only
- Four-part mixing sequence must be followed exactly for a consistent screed
Not suitable for
- Decorative or colour-critical spaces — industrial colour range only
- Exterior UV-exposed decks without a UV-stable finish
- Thin-film budgets — this is a 1.5–3 mm screed, not a paint
- Substrates with moisture above 5% or weak, unprepared concrete
Recommended systems
Heavy-duty F&B production floor
- Mechanically prepare the slab, repair defects and detail drains and coves
- Apply Rayson PurScreed PC70 as a self-smoothing screed at 1.5–3 mm by steel trowel
Layered heavy-traffic build-up
- Apply Rayson PurScreed PC70 as the base coat
- Finish with a further wear coat of Rayson PurScreed PC70 matched to the traffic
Frequently asked questions
When should I choose a PU-cement screed over an epoxy floor?
When the exposure outruns epoxy — aggressive chemical spill zones, hot wet processing and heavy industrial traffic. For drier, lighter duties an epoxy system like LevelShield SL120 is usually more economical.
What thickness should be specified?
Between 1.5 and 3 mm as a self-smoothing screed, selected against loading. Heavier mechanical duty sits at the top of that range — our technical team will match thickness to your traffic.
Can it resist hot wash-down?
PU-cement chemistry is the industry answer for thermally aggressive wash-down zones. Verify your specific wash-down regime and temperature limits with our team.
What colours are available?
Light grey and green as standard; other colours are available on request with lead time.
Why is the mixing sequence so strict?
The resin, hardener and powder must combine in order and mix fully — shortcuts leave unmixed powder that weakens the screed. Allow 3–4 minutes of mixing after the powder bag is empty.
Does it need coving at wall junctions?
In hygiene-critical areas, yes — coved details close the floor-wall junction against water and bacteria. Coving is detailed as part of the floor system design.
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Rayson LevelShield SL120 is a solvent-free, two-component, self-smoothing epoxy floor system that delivers a seamless wearing surface with medium to heavy chemical resistance and high mechanical strength.
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Rayson PrimeBond E20 is a two-component, medium-viscosity, solvent-free epoxy bonding primer that anchors resin floor systems to concrete, screed, asphalt and prepared metal — on dry or damp substrates.
View productReady to specify Rayson PurScreed PC70?
Tell us your surface, area and timeline — our Singapore technical team will recommend a practical system and price it fast.