Seamless, monolithic pure polyurea — including across field joints
Below-grade waterproofing and tanking
Rayson SealForce SP200
Rayson SealForce SP200 is a hot spray-applied, 100% solids, rapid-curing pure polyurea membrane that forms a seamless, chemically resistant waterproof and protective lining on concrete and steel.
Best for
Best for tanks, below-grade structures, water containment, marine environments and roofs that need a seamless, fast-return, chemically resistant polyurea lining.
Real product · Interactive depth view Rayson SealForce
Product system Rayson SealForce SP200
Part A 22.5 kg or 225 kg; Part B 21 kg or 212 kg RY-TDS-1103
Rayson SealForce SP200 has one clearly defined, verifiable job in the coating system.
Rayson SealForce SP200 is a hot spray-applied, 100% solids, rapid-curing pure polyurea membrane that forms a seamless, chemically resistant waterproof and protective lining on concrete and steel. Best for tanks, below-grade structures, water containment, marine environments and roofs that need a seamless, fast-return, chemically resistant polyurea lining.
Rapid cure — light service within about an hour
Tank coating and waste-water tank lining
Excellent chemical resistance, impact, abrasion and puncture resistance
Water containment, landscape water features and waterparks
Seamless protection. Fast return to service.
A rapid-curing pure polyurea lining for tanks, containment, roofs and marine structures exposed to water, chemicals and impact.
A controlled route to applying Rayson SealForce SP200.
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
Abrasive-blasted concrete with blowholes filled
- 02
Prepare the material as specified
Two components metered and mixed in the heated spray gun at a 1:1 volume ratio; block and hose temperature 60–70 °C, spray pressure 2000–2500 psi; do not dilute
- 03
Apply with the correct tools
Recommended methods: Hot airless spray (plural-component). Confirm coat count and thickness for the project.
- 04
Protect through the required cure
Gel time 5–10 seconds; walkable ~2 minutes; light traffic 15–20 minutes; post-cure 24 hours
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 SealForce SP200 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 SealForce SP200Standalone coating · Polyurea
- Approved primer / baseIncluded when required by the system design
- Correctly prepared substrateAbrasive-blasted concrete with blowholes filled
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
1.0–3.0 litres/m² depending on specification; normal minimum 1.5 litres/m² (1.5 mm DFT external, 2.5–3.0 mm for water-retaining structures)
Two components metered and mixed in the heated spray gun at a 1:1 volume ratio; block and hose temperature 60–70 °C, spray pressure 2000–2500 psi; do not dilute
Gel time 5–10 seconds; walkable ~2 minutes; light traffic 15–20 minutes; post-cure 24 hours
Part A 22.5 kg or 225 kg; Part B 21 kg or 212 kg
Confirm the substrate and real service environment before specifying.
Choose it when
- Below-grade waterproofing and tanking
- Tank coating and waste-water tank lining
- Water containment, landscape water features and waterparks
- Secondary containment linings
- Marine and splash-zone structures
- Roof waterproofing where a sprayed seamless membrane is specified
Relevant applications
Relevant industries
Choose something else when
- Applied only by specialist applicators with heated plural-component spray equipment
- Must be applied over the specified primer — never diluted
- Aromatic polyurea — discolours under UV (physical properties unaffected)
- Steel must be coated before flash-rust reforms after blasting
- Potable-water use requires the specified potable-grade primer
- Hand application by roller or brush
- Application by non-specialist applicators without plural-component spray plant
- UV-critical exposed finishes without a stable topcoat
- Application over unprimed or contaminated substrates
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+
- Abrasive-blasted concrete with blowholes filled
- Grit-blasted steel (coated before flash-rust reforms)
- Primed with the specified Rayson primer for the substrate
- Potable-water contact requires the specified potable-grade primer
Technical documents and project support
Ready to specify Rayson SealForce SP200? 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 SealForce SP200.
Can SealForce SP200 be applied without spray equipment?
No. It is a fast-gelling pure polyurea that must be placed by specialist applicators using heated, high-pressure plural-component spray equipment. For hand-applied waterproofing, use the roller-grade SealForce RC30 or RC40.
How soon can the structure return to service?
It gels in seconds and is walkable in about two minutes, taking light traffic in 15–20 minutes, with a 24-hour post-cure — one of the fastest returns to service of any waterproofing membrane.
Is it safe for drinking-water tanks?
It is suitable for potable-water contact when the substrate is primed with the specified potable-grade primer. Confirm the full potable system with our technical team for your project.
Will it change colour outdoors?
As an aromatic polyurea it can discolour under prolonged UV. This is cosmetic only and does not affect the waterproofing or physical performance; a UV-stable topcoat can be specified where appearance matters.
What thickness is applied?
Typically 1.5 mm dry film for external waterproofing and 2.5–3.0 mm for water-retaining structures, from a coverage of about 1.5 litres/m² upward depending on the specification.
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