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Polyurea Rayston foundations at Real Plaza Piura

Foundation slab in a sheet-piled excavation with Polyurea Rayston layers numbered 1 to 3 on the concrete, primer and grey membrane

Engineer notes. Not a blog. Polyurea Rayston foundations are a named pure polyurea on a buried raft. They are not a radon 2K M by default.

Write Polyurea Rayston foundations as a buried membrane. Krypton magazine NUM.5 (October 2025) waterproofs the foundations of Real Plaza Shopping Centre, Piura, Peru, at 14,600 m². Polyurea Rayston (hot-spray 100% pure polyurea) is the continuous, joint-free barrier. Therefore the specifier writes the commercial name and the chemical type in the same sentence.

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What Polyurea Rayston foundations actually are

Catalogue 2024 marks Polyurea Rayston CE EN-1504-2, ETA ETAG005 16/0148 and BBA 18/5582. WRAS according to BS6920 also sits on that name — for drinking-water tanks, not automatically for a shopping-centre raft. Keep WRAS on drinking-water reservoirs. Keep this card on foundations.

However, Impermax 2K M (two-component solvent-free aromatic biobased polyurethane) is the catalogue radon-barrier membrane. Do not move that radon sentence onto this Piura job unless the current TDS for the named kit says so. Also, do not invent kg/m². Primer choice stays on the sheet for the substrate that is there.

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How to schedule Polyurea Rayston foundations

First, name the buried raft and the moisture. Then name Polyurea Rayston (pure polyurea). After that, send the reader to documents. In addition, size the area on the calculator once the sheet is read.

See Polyurea Rayston, foundations and radon-gas barriers and documents. Area is sized on the calculator.

Outbound reference: EOTA — European Technical Assessments.

A foundation lining is not a roof coat. Keep Polyurea Rayston on the raft the magazine names. Keep WRAS on potable tanks.

Therefore consumption, mix and overcoat stay on the TDS. A number invented here would be a specification error. First open documents. Next name the primer. After that name the membrane.

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.

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