Certified for potable-water contact (WRAS / BS 6920)
Lining potable-water tanks and reservoirs
Rayson SealForce SP210
Rayson SealForce SP210 is a hot spray-applied, 100% solids pure polyurea membrane that forms a seamless, potable-grade waterproof lining on concrete and steel tanks, reservoirs and containment structures.
Best for
Best for potable-water tanks and reservoirs, sewage digesters, secondary containment and water towers needing a seamless, certified, fast-setting spray lining.
Real product · Interactive depth view Rayson SealForce
Product system Rayson SealForce SP210
400 litre unit (Part A + Part B) RY-TDS-1104
Rayson SealForce SP210 has one clearly defined, verifiable job in the coating system.
Rayson SealForce SP210 is a hot spray-applied, 100% solids pure polyurea membrane that forms a seamless, potable-grade waterproof lining on concrete and steel tanks, reservoirs and containment structures. Best for potable-water tanks and reservoirs, sewage digesters, secondary containment and water towers needing a seamless, certified, fast-setting spray lining.
100% solids, seamless membrane on concrete and steel
External waterproofing of water towers and reservoir roofs
Hard, tough surface with strong tear and abrasion resistance
Sealing concrete and steel tanks and structures
A seamless lining for water that matters.
A fast-setting potable-grade pure polyurea membrane for tanks, reservoirs and water-containment structures.
A controlled route to applying Rayson SealForce SP210.
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
Prepared concrete and steel structures
- 02
Prepare the material as specified
Two components metered and mixed in the heated spray gun at a 1:1 volume ratio (1.12:1 by weight); components pre-heated to ~25 °C and hoses controlled to about 70 °C; Part B power-mixed before use
- 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 5–20 s at 60 °C; walk-on ~10 minutes at 20 °C; light duty ~4 hours; 100% cure ~4 days (WRAS use requires 20 days at 7 °C minimum)
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 SP210 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 SP210Standalone coating · Polyurea
- Approved primer / baseIncluded when required by the system design
- Correctly prepared substratePrepared concrete and steel structures
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 litre/m² per mm dry film; typically 1.5 mm wet film in one coat
Two components metered and mixed in the heated spray gun at a 1:1 volume ratio (1.12:1 by weight); components pre-heated to ~25 °C and hoses controlled to about 70 °C; Part B power-mixed before use
Gel time 5–20 s at 60 °C; walk-on ~10 minutes at 20 °C; light duty ~4 hours; 100% cure ~4 days (WRAS use requires 20 days at 7 °C minimum)
400 litre unit (Part A + Part B)
Confirm the substrate and real service environment before specifying.
Choose it when
- Lining potable-water tanks and reservoirs
- External waterproofing of water towers and reservoir roofs
- Sealing concrete and steel tanks and structures
- Secondary containment linings
- Sewage digester linings
Relevant applications
Relevant industries
Choose something else when
- Applied only by specialist applicators with heated plural-component spray equipment
- Apply above 3 °C over dew point and below 85% relative humidity
- Shelf life is 6 months from shipment — check dates before use
- Potable (WRAS) compliance requires the full specified cure regime
- Store and apply components warm (around 25 °C) for correct spray
- Hand application by roller or brush
- Application by non-specialist applicators without plural-component spray plant
- Continuous service above its dry temperature limit
- Long storage — plan around the 6-month shelf life
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+
- Prepared concrete and steel structures
- Primed and prepared per the project method statement
- Applied at temperatures at least 3 °C above the dew point, below 85% RH
Technical documents and project support
Ready to specify Rayson SealForce SP210? 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 SP210.
Is SealForce SP210 approved for drinking water?
Yes — it is certified for potable-water contact (WRAS to BS 6920 in the UK). Potable compliance depends on following the full specified cure regime, which our technical team will confirm for your project.
How is it applied?
By specialist applicators using heated plural-component spray equipment, metering the two parts at a 1:1 volume ratio with hoses controlled to around 70 °C. It is not a hand-applied product.
How quickly can a tank return to service?
It walks on in about ten minutes and takes light duty within hours, with full cure in a few days — though potable-water certification requires an extended cure period before filling.
What is its shelf life?
About six months from shipment when kept in sealed original containers in a dry store. Because that is shorter than many coatings, plan deliveries to the programme and check dates before spraying.
How does it differ from SealForce SP200?
Both are sprayed pure polyureas. SP210 is selected where drinking-water certification and a hard, abrasion-tough tank lining are the priority; SP200 is the general-purpose sprayed membrane for below-grade, marine and containment waterproofing.
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