ROMEX® D4000
Pot Hole Repair
Ideal for pothole patch, curb replacement or cracking.
Repair and restore your hardscape surfaces with ROMEX D4000, the ultimate solution for pothole patching, curb replacement, and crack repair. Engineered for strength and longevity, this versatile product is perfect for fixing damaged asphalt, concrete, and other hardscape materials. With its fast-setting formula and easy application, ROMEX D4000 provides durable, weather-resistant repairs that stand up to heavy use and extreme conditions. Whether you’re addressing small cracks or larger structural issues, ROMEX D4000 is your go-to product for keeping hardscape surfaces safe, stable, and looking their best.
WEATHER WARNING – Only install at max temperatures over -10 °C | 14 °F. Lower temperatures result in slower hardening, while higher temperatures cure faster. This product can be installed in light drizzle.

- For Heavy Traffic Loads (>25t)
- For Joint Depths from 3/8″ | 10 mm
- 2 Component Epoxy Resin
- Quick Reopening for Traffic
- Can be Applied During Drizzle
- Can be Applied down to -10 °C | 14 °F
FEATURES
WATCH THE ROMEX® – D4000 HR VIDEO
INSTALL STEPS
REQUIRED TOOLS
- Drill mixer
- Helical paddle
- Margin trowel
- Trowel
- Hand tamper / plate compactor
- 5 gallon pail
Construction site requirements: The surface should be prepared according to the expected traffic loads. Loads that later go over the surface must not cause the surface to sink or loosen stones.
Preperation: Clean the Area: Remove all debris and clean the area out to a depth of at least 10 mm (3/8”). Ensure the surface is solid. Surface Treatment (If Needed): prepare the surface by grinding for better adhesion. Check the Surrounding Asphalt: The asphalt around the repair area must be stable and intact. If you find loose or crumbling asphalt, use an asphalt saw to cut it out cleanly before proceeding. Always wear appropriate personal protective equipment (PPE) during preparation and application.
Mixing: Open the bucket, open the bottles within and pour the contents slowly and completely into the filler material component. In order to fully utilise the contents, when working during winter, the resin/hardener components should be brought up to room temperature before use. This makes it easier to empty the bottles and improves mixing. Start the mixing process. Do not add water! After 3 minutes of mixing time, pour the mortar into a clean, dry bucket and mix again for at least 3 minutes. When re-potting please ensure that any remaining resin on the bucket sides is scraped out and added to the new bucket. Total mixing time: at least 6 minutes. Use a professional whisk or concrete mixer.
Application breakage/holes: Pour the ready mixed repair mortar onto the surface and pre-distribute using a shovel or metal squeegee. Using a trowel, compact the mixture and smooth the surface. Good compacting is vital to ensure the longevity of the final product!
Application edge breakage/curbstone repair: Apply the ready mixed repair mortar using a trowel onto the area to be repaired and roughly mould to shape, then compact using a smoothing trowel and level off. Tip: use a second trowel as “moulding” to create a well compacted edge. Larger vertical areas should be encased.
Professional tip: To achieve even better edge strength, with edge chipping and very shallow areas, mix the resin / hardener components in a separate bucket for 2 minutes and then add the contents to the filler component. Mix again for at least 3 minutes. Since a residue of the resin / hardener mixture always remains in the bucket, this residual amount can be used as a primer for the faulty area. To do this, use a brush to coat the resin / hardener mixture onto the area. The repair mortar is then processed wet in wet as described above. All tools and work shoes should be cleaned in the event of work stoppage and after application with commercially available solvents (for example, ethanol, methylated spirits). The cured product can only be removed mechanically.
Subsequent treatment: Rain protection is not necessary in case of drizzle. In case of permanent or heavy rain, the freshly jointed surface should be protected against rain for 2 hours. The rain protection layer must not be laid directly onto the surface, this is to ensure sufficient air circulation. In case of doubt, please lay a sample surface before commencing application. Proper preparation and compaction is the key to a durable and long-lasting repair
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