Sika FastFix All Weather Jointing Compound - Dark Buff

Sika FastFix is designed for joints that are over 5mm wide and at least 20mm deep for optimal performance and durability.

Yes, Sika FastFix All Weather Jointing Compound is specifically formulated for application in all weather conditions, including during rain.

Initial set is typically 6 to 12 hours above 15°C in dry conditions. For a full, robust set, allow up to 5 days in temperatures between 4°C and 15°C. Avoid heavy traffic until fully cured.

Once opened, you can store any unused compound by fully submerging it in water inside its original tub. Ensure it is completely covered by water and seal the lid tightly to maintain its workability.

It's suitable for a variety of outdoor paving types, including footpaths, stone setts, cobbles, and Indian sandstone slabs.

Yes, Sika FastFix creates a natural barrier that helps to inhibit weed growth in your paving joints.

No, Sika FastFix is a ready-to-use, self-setting compound that requires no mixing, simplifying the application process.

Check the ambient temperature. In temperatures below 15°C, the compound will take longer to set, potentially up to 5 days for a full cure. Ensure the paving surface was damp during application, but not excessively wet (unless raining during application, which is acceptable). Humidity can also affect setting times.

Verify that the joints meet the minimum requirement of 5mm wide and 20mm deep. If joints are shallower or narrower, the weed barrier may be compromised. Ensure the compound was fully compacted into the joints without gaps.

Sika FastFix is formulated with Active Resin Technology to prevent shrinking and cracking. If this occurs, it might indicate insufficient compaction during application or improper joint preparation (e.g., joints not clean or deep enough). Re-evaluate the application process for any missed steps.

This compound is highly water permeable. If pooling occurs, investigate the overall drainage of your paved area or the ground beneath. The issue might not be with the jointing compound itself but with the sub-base or the slope of the paving.

Ensure the compound has been stored correctly. If it feels too stiff, it might have partially dried out. For opened tubs, ensure it was stored completely submerged in water. If using a new tub, check the product's expiry date.