Dansand NO Grow Joint Filling Sand, Natural

Product Information

The NO GROW mixture consists of washed and dried silica sand as well as nutrient-poor minerals with a high pH value. The high pH value causes weed seeds to dry out so that they cannot take root and germinate – in a completely natural way. The minerals dissolve slowly and can only be washed out after 10 years of rain. With the correct use of DANSAND ® joint filling sand, you get a great result that lasts for many years. Try to save any left over sand for future use in areas of paving you may have missed or is lost due to wind and rain. Sweep the paving surface with a soft broom until clear of all excess stone dust. The stone dust may leave a grayish residue which will wash off when it rains. Estimated consumption: Approx. 2,0 kg/m 2 at 3 mm joints. Our coverage calculator can help you calculate the amount you need.

The content of the bag should be mixed before sweeping the material into the joints otherwise the binders will not be mixed with the silica sand. Maybe some of your joints have hardened and some of them have not? If so, the binders have probably not been mixed with the silica sand.If the paving is new, vibrate twice using a protective rubber mat on the vibrating plate to avoid damage to the paving surface. Sweep the filling materials into the joints using a soft broom. Sweep in a diagonal pattern until the joints are filled to the top. 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.

We recommend a joint height of min. 4 cm when filling your joints to ensure that the roots of the seed do not have enough time to find nourishment, as it will dry out before then.

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It is therefore important that you filled your joints in a height of 4 cm when you first applied DANSAND® NO GROW™ in 2021. Likewise, it is important that you have are maintaining your joints on a regular basis, making sure that they are always completely filled. Although Dansand No Grow is more expensive up front than your average dry jointing sand, the long-lasting benefit of its hardened seal offers good value for money.