Impermax Cold Polyurea: Self-Levelling Cold-Applied Polyurea Membrane
Impermax Cold Polyurea is a two-component, self-levelling cold-applied polyurea membrane that cures fast – even at low temperatures – without any spray rig.
- Product: Impermax Cold Polyurea
- Application: cold-applied waterproofing
- Mix: A=100 : B=6 by weight / A=100 : B=8 by volume
- Colours: rust red, tile red, dark grey (close to RAL 7011)
Excellent crack-bridging and high elasticity, with fast drying even in cold weather.
01 · Uses
Uses of Impermax Cold Polyurea
- Flat roofs, including blue roofs (rainwater-retention roofs), balconies and terraces.
- Waterproofing of exterior concrete structures.
- Quick, simple repairs of hot-sprayed polyurea membranes.
Not sure whether a cold-applied or hot-sprayed system suits your project? Our comparison of hot-spray vs cold-applied polyurea walks through the trade-offs.
02 · Application
Applying a cold-applied polyurea membrane
Up to 2 kg/m² can be applied in a single coat on a horizontal surface. The substrate must be between 10 °C and 40 °C with moisture below 4%, and relative air humidity below 85%.
Pot life is 180 min at 5 °C, 60 min at 23 °C and 30 min at 35 °C. A 1 mm film dries in 1 h at 35 °C / 30% RH, 1.5 h at 23 °C / 40% RH and 7 h at 5 °C / 60% RH.
Supplied as component A in 25 kg and component B in 1.5 kg packs.
Technical datasheet: Impermax Cold Polyurea TDS (PDF) · Polyurea waterproofing systems
03 · Technical data
Impermax Cold Polyurea technical data (TDS values)
Elongation
600%
Tensile strength
5.7 MPa
Shore hardness
75A
Tear strength
34 N/mm
Technical data
- Hardness (Shore): 75A (ISO 868)
- Elongation: 600% (EN-ISO 527-3)
- Tensile strength: 5.7 MPa (EN-ISO 527-3)
- Tear strength: 34 N/mm (ISO 34-1, method B)
- Water vapour resistance factor: μ = 2000; permeability 14 g/m²·day (EN 1931)
- Static crack-bridging: class A5 at -10 °C (EN 1062-7)
- Reaction to fire: Class E (EN 13501-1)
- Thermal resistance: decomposition starts at 180 °C
Approvals
- European Technical Assessment (ETA) 17/0509, 10 and 25 years (ETAG 005)
- BBA certificate 11/4836
- External fire performance: Broof(t4)
- Root resistance to CEN/TS 14416:2014 (with glass-fibre reinforcement)
04 · Performance
Impermax Cold Polyurea performance
Hardness is 75A (ISO 868), elongation 600%, tensile strength 5.7 MPa and tear strength 34 N/mm. The water vapour resistance factor is μ = 2000 (14 g/m²·day), and static crack-bridging reaches class A5 at -10 °C.
Adhesion is 2.0 MPa on concrete, 2.6 MPa on ceramic and 1.4 MPa on PU foam. For background on how cold-temperature crack-bridging classes are stated, see crack-bridging class, stated in the cold.
Application data
- Mix ratio: A=100, B=6 by weight; A=100, B=8 by volume
- Pot life: 180 min at 5 °C, 60 min at 23 °C, 30 min at 35 °C
- Substrate temperature: 10–40 °C
- Substrate moisture: below 4%
- Packaging: 25 kg component A, 1.5 kg component B
05 · FAQ
Impermax Cold Polyurea: frequently asked questions
Can Impermax Cold Polyurea be applied without spray equipment?
Yes. It is a cold-applied, self-levelling membrane; up to 2 kg/m² can go on in one coat on horizontal surfaces.
How long is the pot life?
180 minutes at 5 °C, 60 minutes at 23 °C and 30 minutes at 35 °C, according to the datasheet.
Is it certified?
It holds ETA 17/0509 (10 and 25 years, ETAG 005), BBA certificate 11/4836 and Broof(t4) external fire performance.
More Impermax and Rayston polyurea products
Every product page in this series is based on its official Krypton Chemical technical datasheet.
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