WATCO Concrex Sub Zero – polyaspartic repair mortar for frost down to −20 °C
€234.64
Product information "WATCO Concrex Sub Zero – polyaspartic repair mortar for frost down to −20 °C"
Concrex Sub Zero is WATCO's repair mortar for concrete damage in freezer stores, chillers and outdoor areas in winter. According to the manufacturer it still cures at −20 °C, so cold rooms do not have to be defrosted for the repair and emergency repairs in freezing conditions need not be postponed. That saves downtime and energy.
Unlike the other Concrex mortars, it is based on polyaspartic resin with blended aggregate. The mortar is particularly suited to thin-section repairs and feather edges, can be used up to 50 mm deep and gives a strong, waterproof, non-dusting and chemical-resistant surface for heavy vehicle and foot traffic. Suitable for concrete, metal, sand and cement screed, brick and masonry.
Typical applications
- Freezer rooms, chillers and cold stores
- Unheated buildings and outdoor areas in winter
- Emergency repairs to frost-damaged concrete floors
Features
- Cures down to −20 °C floor temperature (manufacturer data)
- Polyaspartic technology for thin, feather-edged repairs
- Chemical resistant, waterproof, non-dusting
- For heavy vehicle and foot traffic
Technical data (manufacturer)
| Base | 2-pack polyaspartic resin with aggregate |
|---|---|
| Substrates | Concrete, metal, sand and cement, brick, masonry |
| Coverage | approx. 1.2 m² per 10 kg at 5 mm |
| Thickness | feather edge up to 50 mm |
| Cure time | 5 h at 15 °C, 16 h at 0 °C, 48 h at −20 °C |
| Min. floor temperature | −20 °C |
| Use | Indoors and outdoors |
| Storage | 10–30 °C; 12 months unopened |
Sold in the UK as Concrex Sub Zero. Where temperatures stay above 0 °C, Concrex Cold Set is an epoxy-based alternative.
Hazard information under CLP (according to the manufacturer's safety data sheet)
Component: Resin

Signal word: Warning
Hazard statements: H317 May cause an allergic skin reaction. H319 Causes serious eye irritation. H412 Harmful to aquatic life with long lasting effects.
Precautionary statements: P280 Wear protective gloves. Wear eye protection or face protection. P501 Dispose of contents and container in accordance with all local, regional, national and international regulations.
Supplemental information: EUH211 Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.
Component: Curing agent

Signal word: Warning
Hazard statements: H317 May cause an allergic skin reaction. H332 Harmful if inhaled. H335 May cause respiratory irritation.
Precautionary statements: P280 Wear protective gloves. P284 In case of inadequate ventilation wear respiratory protection. P271 Use only outdoors or in a well-ventilated area. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P501 Dispose of contents and container in accordance with all local, regional, national and international regulations.
Supplemental information: EUH204 Contains isocyanates. May produce an allergic reaction.
Component: Aggregate
Not classified as hazardous.
Wording of the H, P and EUH statements as per CLP Regulation (EC) No 1272/2008, Annexes III and IV; pictograms derived from the classification. The manufacturer's label and current safety data sheet are authoritative.
Note: The components may be classified as hazardous. We will send you the current safety data sheets with classification, labelling and H and P phrases on request before you order. Supplied to trade and industrial users only.
Downloads
Technical Details
| Operating Conditions: | Abrasion-resistant, Chemical resistant, Cold-resistant, Cold environment, Durable, For indoor use, For outdoor areas, For production environments, For warehouse |
|---|---|
| Sectors/Industry: | Building & Facility Management, Construction & Renovation, Food & Beverages, Industry & Production, Logistics & Warehousing, Maintenance & Technical Services |
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