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Polyurea Rayston Fast containment on vertical tanks
Polyurea Rayston Fast containment is a named pure polyurea. It is not H Flex and not a 1K roof.
Specify Polyurea Rayston Fast containment when sagging on the wall is the risk. Polyurea Rayston Fast (ultra-fast 100% pure polyurea) is written for concrete waterproofing on vertical areas and water tanks containing aggressive chemicals. Catalogue 2026 names waterproofing of containment basins in the Netherlands at 1,500 m².
What Polyurea Rayston Fast containment actually is
European legislation requires that containment basins remain watertight for the expected discharge time. Spills damage concrete and filter through it. Catalogue 2026 lists Polyurea Rayston Fast, Impermax Cold Polyurea Supreme (solvent-free two-component polyurea) and Krypton ProLine CH55 on that page. Fast curing also allows an abrasive finish by overspraying a top layer of this product. Keep that sentence on Fast. Do not move EAD-030675 21/0740 from Impermax Polyurea H Flex onto this bund.
However, a bund is not a drinking-water tank. WRAS stays on Polyurea Rayston where the exposure is potable. Read thickness from the current TDS, then the calculator.
See Polyurea Rayston Fast, primary and secondary liquid containment, oil and gas / petrochemical and documents. Area is sized on the calculator.
Outbound reference: EOTA — European Technical Assessments.
A yellow platform is not a roof. Keep Polyurea Rayston Fast containment on the chemical basin.
Therefore mix ratio stays on the sheet. First name the vertical. Next name Fast. Also keep H Flex off this clause.
These notes do not replace the current TDS, SDS or a written specification. For pack sizes, mix ratio and kg/m², read the current sheet, then the calculator.