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DANSAND^® Firm Fix is a weed-inhibiting and ready-made jointing compound for outdoor surfaces of concrete and natural stone.

When coming into contact with water, Firm Fix hardens up to a depth of approximately 1 cm in the top layer of the joint. This creates an efficient barrier for weeds and insects and results in firm yet flexible weed-freed joints on drives, patios and paths  with low levels of traffic.

Use our coverage calculator to estimate the amount of Firm Fix you need. As a guideline, please expect to use 20 kg for 5-10 m2.

Declaration

DANSAND^® Firm Fix is a ready-to-use mixture of oven-dried silica sand, cement, and binding agents. Available in neutral or anthracite colours. Can be used directly from the bag.

Packaging

Frost-proof plastic bags made of PP material.

Storage

The bags can be stored outdoors during the summer. Store in a dry place in winter. We recommend a covered storage location, as the plastic foil cannot tolerate heavy rain. Open bags must be closed again.

Safety

Safety data sheets can be requested by contacting Dansand.

Manual

For joints between new or exixting paving stones (concrete or natural stone). Ideal for patios, garden paths and driveways with limited traffic. Only use for unbound substrates. Only for outdoor use. Suited for private use.
Estimated consumption: Approx. 2.0 kg/m² at 3 mm joints. Our coverage calculator can help you calculate the amount you need.

Minimum joint depth is 40 mm. Joint width: 3-10 mm.

Here is how you do it

Paving stones are laid on a sustainable gravel and sand layer in accordance with current standards for paving work. The jointing compound is water-permeable like ordinary jointing sand. Therefore, the base layer must also be water-permeable. The surface must be completely dry, as the jointing material contains cement and other binders that are activated by water.

Repointing

DANSAND^® polymeric block paving fix is not a remedy for weeds. To prevent existing weeds from growing, all weeds – including weed roots – must be removed before grouting. Clean the joint to a depth corresponding to the entire height of the stone. This is done using a joint cleaner. You can also use a high-pressure cleaner, but be careful not to damage the coating or the sublayer. Top up the joint.

Maintenance

To avoid weeds and displacements in the coating, the joint must always be filled to the full height of the joint edge and be completely free of soil and other organic material. The coating is cleaned with a stiff broom and the joints are refilled as needed. Moss and algae can be removed by suitable means.

Extreme weather conditions can cause white blooms in the joints and on the edges of the paving stones. However, they are usually washed off at the next rain shower. The salt deposits can also be removed by regular cleaning of the stones.

Comments

• If you use the filling material for coloured, porous pavings, it may settle in small depressions in the stones, leading to discolouring. This can often be removed with a brush and some soap – see how in our cleaning guidelines
• Always prepare a test area of at least 0.5  m² before beginning
• DANSAND^®  Firm Fix will not withstand constant erosion by water