Polyurea Rayston is listed for drinking water tanks as well as wastewater treatment plants. It is a hot-spray 100% pure polyurea. A protective topcoat is required if the coating is exposed to UV. Impermax Aqua 2K is a different water-retaining polyurethane. It is not the WRAS name.

However, do not move WRAS onto Impermax (one-component moisture-cured polyurethane, 1K PU). Do not move it onto Impermax Polyurea H. Also, do not invent a litre or kilogram rate.

Reservoirs, drinking-water tanks and related hydraulic work sit on the applications page. Primer choice stays on the current TDS for the substrate that is there. Then use the calculator for area.

First, write Polyurea Rayston (pure polyurea). Then write WRAS. After that, send the reader to documents. See drinking-water reservoirs, Polyurea Rayston, documents and the calculator.

Outbound reference: WRAS Approvals.

A roof coat is not potable. Write Polyurea Rayston and WRAS only where Catalogue 2024 prints them.

Therefore the current TDS remains the source for mix ratio, overcoat and consumption. Then the calculator sizes the area. However, a number invented here would be a specification error. In addition, the application page is the schedule. First name the exposure. Next name the commercial product and the chemical type in the same sentence. After that, open documents. Also keep the finish on the same clause as the body. A sample, a colour or a photograph does not replace that sentence.

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.