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Impermax Polyurea H Supreme for roofs that move
Impermax Polyurea H Supreme is a high-elongation hybrid. It is not H Flex and not pure polyurea.
Keep Impermax Polyurea H Supreme on poorly settled or moving roofs. Krypton magazine NUM.5 (October 2025) cites a new ETE for roof waterproofing on this hybrid. Elongation at break is written above 650 percent. Therefore the specifier does not collapse H, H Flex and Supreme.
What Impermax Polyurea H Supreme actually carries
NUM.5 calls it a versatile hybrid polyurea for structures that are poorly settled or under significant movement. Hail is evaluated to European standard EN-1358 with results the magazine calls excellent. Catalogue 2026 already lists Impermax Polyurea H Supreme as a hot-spray hybrid of very high elongation, with CE EN-1504-2. NUM.5 also records EPDs (ISO 14025) for Rayston Fire E, Impermax 2K, Impermax Polyurea H and Polyurea Rayston. That EPD list does not name Supreme. Do not move those EPDs onto this card.
H Flex carries EAD-030675 21/0740 for bridge decks. H carries ETA 11/062. Pure Polyurea Rayston carries ETA ETAG005 16/0148. Keep those marks on those names. Supreme is the high-elongation hybrid the magazine tests for hail.
However, 650 percent is an elongation figure, not a consumption. Read kg/m² from the current TDS. a rate here.
See Impermax Polyurea H Supreme, roofs, balconies and terraces, airport roofs, and documents. Area: calculator.
Outbound reference: EOTA — European Technical Assessments.
A hail clause is not a bridge EAD. Keep Impermax Polyurea H Supreme on the name that carries the elongation.
Therefore the current TDS remains the source for mix and overcoat. First name the movement. Next name Supreme. Also keep H Flex off this hail clause unless the job is a deck.
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.