Self-priming primer-and-topcoat in one product
Coloured seal coats on cementitious screeds
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.
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.
Real product · Interactive depth view Rayson HydroShield
Product system Rayson HydroShield WE45
Part A 4 kg / Part B 1 kg, or Part A 16 kg / Part B 4 kg per set RY-TDS-302
Rayson HydroShield WE45 has one clearly defined, verifiable job in the coating system.
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. 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.
Handles demanding details including rubbish chute coatings
Warehouse flooring and production floors in normal to medium-heavy exposure
Water-based and suitable for unventilated areas
Rubbish chute coatings
Seamless protection for demanding service areas.
A water-based primer-and-topcoat system for floors, walls and difficult details including rubbish-chute environments.
A controlled route to applying Rayson HydroShield WE45.
This sequence supports early planning. It does not replace the current Technical Data Sheet, approved method statement or project-specific technical review.
- 01
Inspect and prepare the substrate
New and existing concrete (minimum 28 days old, moisture content below 5%)
- 02
Prepare the material as specified
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
- 03
Apply with the correct tools
Recommended methods: Roller, Brush, Airless spray. Confirm coat count and thickness for the project.
- 04
Protect through the required cure
Final cure 7 days
Coating system cutaway
Every layer has a job—from prepared substrate to service surface.
This diagram explains a typical system position, not a fixed specification. Primer, body coat, finish, thickness and detailing must be confirmed for the project.
Position in the system Standalone coating
Rayson HydroShield WE45 serves as the standalone coating. Confirm the complete build-up against the substrate, exposure and project requirements.
Related system products
Review primers, body layers, finishes or specialist components connected to this product.
- Rayson HydroShield WE45Standalone coating · Water-based epoxy
- Compatible body coat / baseProvides the required thickness and continuity beneath the finish
- Approved primer / baseIncluded when required by the system design
- Correctly prepared substrateNew and existing concrete (minimum 28 days old, moisture content below 5%)
Four project facts for faster system screening.
These current product figures support early selection. Confirm the final build-up, quantity and application conditions against the Technical Data Sheet and site conditions.
- Coverage
- Coverage
- Mixing & working time
- Mixing
- Drying & curing
- Curing
- Pack configuration
- Pack
6–8 m² per kg per coat, varying with prepared substrate condition
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
Final cure 7 days
Part A 4 kg / Part B 1 kg, or Part A 16 kg / Part B 4 kg per set
Confirm the substrate and real service environment before specifying.
Choose it when
- 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
Relevant applications
Concrete Floors Cement Screeds Warehouses & Manufacturing Areas Car Park Decks Offices & Retail Areas
Relevant industries
Choose something else when
- 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
- 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%
Other Rayson products to evaluate
These links continue the comparison; they are not automatic substitutes. Confirm the substrate, exposure and complete build-up before selection.
Substrate requirements+
- New and existing concrete (minimum 28 days old, moisture content below 5%)
- Cementitious screeds, including highly absorbent substrates
- Asphalt
- Metal (mechanically prepared)
- Dry or damp surfaces (no standing water)
Technical documents and project support
Ready to specify Rayson HydroShield WE45? Give Rayson the site conditions.
Send the area, substrate condition, expected traffic or exposure, required finish and programme. The technical team can help review the system build-up and estimated quantity.
What to know before specifying Rayson HydroShield WE45.
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.
Related products
Finish HydroShield
Rayson HydroShield WE40
Self-priming · water-based
Rayson HydroShield WE40 is a two-component, water-based epoxy used as a self-priming primer-and-topcoat system on concrete, screed, asphalt and metal — including damp surfaces.
Prime PrimeBond
Rayson PrimeBond W10
Single-pack · water-based
Rayson PrimeBond W10 is a one-component, water-based acrylic primer, sealer and bonding agent for smooth concrete and mineral substrates, applied ahead of Rayson UraForce water-based topcoats.
Finish UraForce
Rayson UraForce WB60
Water-based polyurethane finish
Rayson UraForce WB60 is a two-component, water-based aliphatic polyurethane dispersion clear coat, crosslinked with a solvent-free hardener, giving a non-yellowing, abrasion-resistant finish in gloss, satin or matt.