Sika FastFix All Weather Jointing Compound - 15kg - Charcoal

The initial set can occur within a few hours, but it's recommended to protect the area from heavy rain and foot traffic for at least 24-48 hours to allow for full curing and strength development. Always refer to the product packaging for specific curing times based on environmental conditions.

No, Sika Fastfix All Weather Jointing Compound comes pre-mixed and ready to use straight from the bag. It is a self-setting compound that activates with moisture (from pre-wetting the paving and ambient humidity).

Sika Fastfix All Weather Jointing Compound is primarily designed for horizontal paving joints where gravity assists in compaction. It is generally not recommended for vertical applications as it may not hold its form before setting.

Coverage varies significantly based on the size of your paving slabs, and the width and depth of your joints. As a general guide, calculate the total joint volume you need to fill. Many suppliers offer calculators or approximate coverage rates; always purchase slightly more than you estimate.

Once fully cured, the compound creates a dense, water-resistant joint that helps prevent water ingress into the sub-base. However, it is not a primary waterproofing membrane for preventing hydrostatic pressure.

You will need a stiff broom or brush for working the compound into joints, a pointing trowel or compacting tool for consolidation, and a hose or watering can for pre-wetting the paving. A soft brush or sponge might be useful for final cleaning of paving surfaces.

Ensure adequate compaction during application. Insufficient compaction can leave air pockets. Also, check ambient temperature and humidity; very cold or dry conditions can affect setting time. Follow manufacturer's guidance on minimum application temperature and ensure joints are correctly wetted before application.

This can occur if the paving wasn't sufficiently pre-wetted or if excess compound wasn't removed completely and promptly. Re-wet the area and scrub with a stiff brush. For stubborn haze, use a specialized patio cleaner designed to remove efflorescence or resin residue, always testing on an inconspicuous area first.

Ensure the sub-base and paving slabs are stable before application. Movement in the paving can lead to joint failure. Also, check that joints were filled to the correct depth (minimum 20mm) and properly compacted to ensure density.

While the compound helps inhibit weeds, it doesn't entirely prevent them, especially if seeds land on the surface. Ensure joints are fully compacted and free of gaps. Regular sweeping and occasional spot treatment with a weed killer can help maintain a weed-free finish.