Self-priming seal coat system
- Mechanically prepare and vacuum the substrate
- Apply a first coat of Rayson HydroShield WE45 as the primer
- Apply a second coat of Rayson HydroShield WE45 as the coloured topcoat
Rayson HydroShield · Water-based epoxy
Rayson HydroShield WE45
Rayson HydroShield WE45 is a two-component, water-based epoxy primer-and-topcoat system for concrete, screed, asphalt and metal — covering duties from warehouse floors to rubbish chute coatings.
ConcreteCement screed TDS RY-TDS-302
Best for
Best for coloured seal coats in normal to medium-heavy service where a water-based, self-priming system must also handle demanding details like rubbish chutes.
HydroShield WE45 extends the water-based HydroShield seal-coat approach across a wider set of duties: warehouse flooring, production floors, car park decks and rubbish chute coatings. Like WE40, it is self-priming — the first coat primes, the following coats finish — so one product covers the whole build-up.
The water-dilutable epoxy formulation delivers good hiding power, high mechanical properties and good anti-corrosive resistance. Adhesion to mechanically prepared substrates is excellent, with pull-off failure occurring in the concrete rather than the coating, and application is possible on dry or damp surfaces.
Water-based chemistry keeps odour down and makes the product suitable for unventilated areas — enclosed chutes, risers and basement levels included.
In Malaysia
Supplied by Epovex Coatings Sdn. Bhd., Company No. 202601042128 (1704223-A). The Malaysia launch is scheduled for 1 March 2027; confirm availability and lead time for your project. Installation through an authorised applicator in Johor, Kuala Lumpur or Penang introduced by Rayson, who quotes and warrants the workmanship, or by your own crew with Rayson’s application guidance.
Send an enquiryKey benefits
- Self-priming primer-and-topcoat in one product
- Handles demanding details including rubbish chute coatings
- Water-based and suitable for unventilated areas
- Applies to dry or damp surfaces with excellent adhesion
Recommended uses
- Coloured seal coats on cementitious screeds
- Warehouse flooring and production floors in normal to medium-heavy exposure
- Rubbish chute coatings
- Car park deck coatings
- Self-priming primer-and-topcoat systems on new and existing concrete
Application
- Roller
- Brush
- Airless spray
| Specification | Data sheet value |
|---|---|
| Coverage | 6–8 m² per kg per coat, varying with prepared substrate condition |
| Mixing | Two pre-weighed parts, mix ratio 4:1 (A:B) by weight; mix mechanically for at least 2–3 minutes; pot life up to 30 minutes at 30 °C |
| Drying and curing | Final cure 7 days |
| Pack sizes | Part A 4 kg / Part B 1 kg, or Part A 16 kg / Part B 4 kg per set |
Typical systems
Limitations
- Minimum substrate temperature 5 °C; curing between +10 °C and +35 °C; concrete moisture content maximum 5%
- Mixed material must be used within its pot life; cures faster in hot weather and in large batches
- A thin-film seal coat — not intended for heavy impact or thick-build duties
- Epoxy chemistry — will yellow and chalk under exterior UV exposure
Not suitable for
- Heavy impact and intensive forklift zones needing thick-build systems
- Exterior UV-exposed surfaces without a UV-stable topcoat
- Substrates with standing water or moisture above 5%
Used with
Jobs and industries
Jobs that use Rayson HydroShield WE45
Rayson-authorised applicators in Johor, Kuala Lumpur and Penang install Rayson HydroShield WE45 on these jobs and in these industries; its layer is marked in each build-up. Each page shows how the work runs, what to send for a quotation and what decides the price.
Floor systems, laid by an applicator or bought direct
All floor systems ↗ 01 Rayson system
Concrete floor sealer
Stop a concrete floor dusting: UraForce WB60 clear indoors, SB65 clear outdoors, or a coloured HydroShield WE40 or WE45 seal coat; laid or sold direct.
- UraForce WB60 clear polyurethane, two coats
- Concrete slab, ground, repaired and vacuumed
Outdoors and on stone: UraForce SB65 clear. A coloured seal coat: HydroShield WE40 or WE45, its own primer.
Quoted after inspectionBy industry, across Malaysia
Industries we cover ↗ 02 Rayson system
Car park floors
Basement, covered and open car park decks, ramps and walkways in condos, malls, offices and factories: textured epoxy, UV-stable PU and deck waterproofing.
- FloorGuard R50 sealing coat
- FloorGuard R50 broadcast with graded aggregate
- PrimeBond E20 epoxy primer
- Concrete deck, ground and moisture-tested
Pedestrian walkways: GripSafe AP12. Open top deck: UraForce SB72 over PrimeBond S30. A deck that leaks into the level below: SealForce RC30 under the wearing layers.
Quoted after inspection The practical details
Rayson HydroShield WE45: questions people ask
What makes WE45 suitable for rubbish chutes?
It is a self-priming, water-based coating that can be applied in enclosed, unventilated spaces and produces a sealed, cleanable surface — the combination chute refurbishment needs.
Does it need a separate primer?
No — the first coat serves as the primer on mechanically prepared substrates. Very porous surfaces may warrant an extra coat.
Can WE45 go onto damp concrete?
Yes, dry or damp surfaces are acceptable within a 5% substrate moisture limit and with no standing water.
Is it strong enough for forklift areas?
It is rated for normal to medium-heavy exposure. For intensive forklift traffic or impact zones, step up to LevelShield SL120 or a PurScreed screed — our technical team can advise.
How does it behave outdoors?
As an epoxy it will yellow under UV. On exposed decks, overcoat with a UV-stable UraForce polyurethane finish.
Start a conversation / ↗
Send the job, or ask for materials
Tell us what the surface is, where it is and what it has to withstand. Rayson replies with a system recommendation; for installation, the applicator for your area in Johor, Kuala Lumpur or Penang is introduced to quote the job.
Malaysia launch: 1 March 2027. Enquiries are welcome now; supply, site assessment and installation timing are confirmed for each project.