How To Repair A Freezer / Cold Store Floor
Concrete floors in freezers and cold storage areas face unique challenges — extreme low temperatures, moisture, thermal cycling and heavy traffic can cause damage over time. To get these floors back in reliable service quickly and effectively, you need repair solutions designed for low-temperature environments and fast turnaround.
Polycote offers a range of products specifically formulated for freezer and cold store floor repair, including low-temperature mortars and specialist joint sealants that cure even below freezing.
Concrete floors in freezers and cold storage areas face unique challenges — extreme low temperatures, moisture, thermal cycling and heavy traffic can cause damage over time. To get these floors back in reliable service quickly and effectively, you need repair solutions designed for low-temperature environments and fast turnaround.
Polycote offers a range of products specifically formulated for freezer and cold store floor repair, including low-temperature mortars and specialist joint sealants that cure even below freezing.
1. Choose the Right Repair Product for the Temperature The temperature of the floor at the time of repair has a big impact on performance. Standard repair mortars may never cure correctly in freezing conditions, or take far longer than expected to reach full strength.
Cold store grade resins and mortars from Polycote are designed to perform reliably at temperatures well below 0 °C, meaning repairs can be completed without having to heat the entire space or take the freezer out of service.
The temperature of the floor at the time of repair has a big impact on performance. Standard repair mortars may never cure correctly in freezing conditions, or take far longer than expected to reach full strength.
Cold store grade resins and mortars from Polycote are designed to perform reliably at temperatures well below 0 °C, meaning repairs can be completed without having to heat the entire space or take the freezer out of service.
2. Repair Holes and Surface Damage - Use a two-part cold store resin for general hole filling and patch repairs – simply mix and trowel into place.
- For deeper repairs (15 mm and over), choose a Deepfill version that can be applied in thicker layers, up to 50 mm per layer.
- In normal conditions, these products will cure quickly, with areas often back in full use within just a couple of hours.
If a repair product originally used in a cold area didn’t cure properly (common with standard mortars), it may need to be removed and redone using the cold-grade materials to ensure strength and longevity.
- Use a two-part cold store resin for general hole filling and patch repairs – simply mix and trowel into place.
- For deeper repairs (15 mm and over), choose a Deepfill version that can be applied in thicker layers, up to 50 mm per layer.
- In normal conditions, these products will cure quickly, with areas often back in full use within just a couple of hours.
If a repair product originally used in a cold area didn’t cure properly (common with standard mortars), it may need to be removed and redone using the cold-grade materials to ensure strength and longevity.
3. Seal and Repair Expansion Joints With Flexibility in Mind Freezer and cold store floors expand and contract with temperature changes. Using a rigid repair mortar to fill expansion joints can prevent this natural movement and lead to cracking elsewhere in the slab.
For joints, Polycote’s Jointex CSG (Cold Store Grade) flexible sealant cures at temperatures as low as –30 °C. It remains flexible to allow movement, preventing further cracking and reducing long-term damage.
If old joints have been filled with hard mortar and cracks have formed as a result, cutting out the old material and reinstating the joint with Jointex CSG restores proper movement and protects the slab structure.
Freezer and cold store floors expand and contract with temperature changes. Using a rigid repair mortar to fill expansion joints can prevent this natural movement and lead to cracking elsewhere in the slab.
For joints, Polycote’s Jointex CSG (Cold Store Grade) flexible sealant cures at temperatures as low as –30 °C. It remains flexible to allow movement, preventing further cracking and reducing long-term damage.
If old joints have been filled with hard mortar and cracks have formed as a result, cutting out the old material and reinstating the joint with Jointex CSG restores proper movement and protects the slab structure.
4. Use Cretex LT for Versatile Low-Temperature Repairs Cretex LT is a fast-curing, single-pack cementitious repair mortar that works from +25 °C down to as low as –20 °C. Its odourless, non-taint formulation makes it suitable for cold store floors, entrances and other areas where ice and moisture are common.
Key benefits of Cretex LT include:
- Rapid strength gain – similar to concrete in around 2 hours
- Suitable for both internal and external use
- Can be applied around ironwork and at doorway entrances where moisture and ice can cause deterioration
This product is ideal where you need a strong, reliable repair with minimal downtime.
Cretex LT is a fast-curing, single-pack cementitious repair mortar that works from +25 °C down to as low as –20 °C. Its odourless, non-taint formulation makes it suitable for cold store floors, entrances and other areas where ice and moisture are common.
Key benefits of Cretex LT include:
- Rapid strength gain – similar to concrete in around 2 hours
- Suitable for both internal and external use
- Can be applied around ironwork and at doorway entrances where moisture and ice can cause deterioration
This product is ideal where you need a strong, reliable repair with minimal downtime.
Tips for Reliable Freezer Floor Repairs - Clean and dry the repair area thoroughly before applying any material – remove loose concrete, grease, frost or ice first.
- Keep repair materials at an appropriate temperature before mixing to improve workability and cure behaviour when working in cold conditions.
- Choose products engineered for low temperatures to avoid extended cure times, lack of strength development, or failed repairs.
- Clean and dry the repair area thoroughly before applying any material – remove loose concrete, grease, frost or ice first.
- Keep repair materials at an appropriate temperature before mixing to improve workability and cure behaviour when working in cold conditions.
- Choose products engineered for low temperatures to avoid extended cure times, lack of strength development, or failed repairs.
Summary Freezer and cold store floors require specialist repair materials that can cure reliably at low temperatures and deliver fast strength gain. Polycote’s range, including cold-grade resins, deepfill mortars and flexible joint sealants, is formulated to handle sub-zero environments and reduce downtime.
For tailored advice on your specific repair project, contact our technical team — we can help you select the right products and application approach.
Freezer and cold store floors require specialist repair materials that can cure reliably at low temperatures and deliver fast strength gain. Polycote’s range, including cold-grade resins, deepfill mortars and flexible joint sealants, is formulated to handle sub-zero environments and reduce downtime.
For tailored advice on your specific repair project, contact our technical team — we can help you select the right products and application approach.
Need Advice on Cold Store Solutions?
If you need help picking the right product or want advice for your project, contact the Polycote technical team. Call us at 01234 846 780 or email [email protected]. We’re here to help.
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