Joint sand against weeds: which sand is ideal?

Joint sand gives paved areas on the property the necessary strength and helps to keep them weed-free. The product range is large. We show which product best suits your project.

Joint sand

Weeds or moss in the pavement joints does not look nice, endangers the building fabric and represents a risk of accidents. Mechanical removal is time consuming and arduous. Sweeping in joint sand promises relief. The specialist trade offers property owners a wide range for this purpose. Which product is the right one depends on:

• the type of use
• the place of use
• the required strength
• the width and depth of the joints

Narrow joints

If the pavement joints are less than five millimeters wide, fine joint sand with a grain size between 0.1 and 0.5 millimeters is the suitable product. The depth of the joint should be at least 40 millimeters for this quality. The fine material ensures weed-free, radiantly clean joints. Sweeping in the sand does not affect water permeability.

Note: Completely fill the spaces between paving stones or pavement slabs with grout. Avoid contamination with soil or remnants of weeds, leaves or grass.

instructions

1. Clean the paved area.
2. Spread the joint sand over the surface.
3. Sweep it diagonally into the grout. Work until the panels are free of sand.
4. Fix newly laid slabs or paving stones with a vibrator after the joint sand has been introduced.
5. Fill the joints again and then sweep the surfaces free with a soft broom.

Wide joints

With joint widths between five and ten millimeters, loose quartz sand would wash out quickly. They can be filled with coarser material or with special joint sand products for wide joints.

Self-hardening joint sand mixtures

Even hardening products or grout are suitable for filling and strengthening joints up to ten millimeters wide. These mixtures consist of sand and some binding agent. They are easy to use and remain flexible despite their high stability. Alternatively, quartz sand can be mixed with a binder and water yourself. Ready-to-use joint sand mixtures for wide joints do not require the addition of water, so that contamination from material residues on the covering can be prevented.

Instructions:

1. Clean the paved area.
2. Mix the joint sand mixture well once.
3. Spread the product over the area.
4. Sweep the grout thoroughly into the grout.
5. Clean the flooring and remove the sand residue.
6. Shake the paved area with a vibrator.
7. Refill the jointing sand product so that all spaces are completely filled.

Note: As a guideline, the wider the joints, the coarser the filling material should be.

Joint chippings or coarse sand

Wider joints can be filled with coarse joint sand or fine chippings with a grain size of up to three millimeters. We recommend using basalt grit.

Instructions:

1. Clean the paved area.
2. Spread the fine grit and sweep it into the joints.
3. When all the gaps are well filled, remove the remaining grit on the stones.
4. Vibrate the clean, dry surface with a surface vibrator.
5. If necessary, refill gravel and remove the remains from the paved area.

Note: In addition to the type of product, the depth of the joints also has a significant influence on the strength of the paths and terraces.

Calculate sand consumption

In order to plan consumption, it is necessary to consider the size of the joints, as well as the type and dimensions of the flooring. Have the consumption calculated by your building materials dealer or use the joint sand calculator on the Internet.

frequently asked Questions