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. 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. During joint filling and during the first days of hardening, the air and soil temperature must be at least 10 ° C. 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.

Estimated consumption: Approx. 2,0 kg/m 2 at 3 mm joints. Our coverage calculator can help you calculate the amount you need. we are sorry to learn that you had a bad experience using DANSAND® NO GROW™. As we understand, you applied NO GROW in 2021. However, you do not specify which exact NO GROW product you were using. In the below answer, we will be assuming that you have used DANSAND® NO GROW™ Joint Filling Sand. 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. Paving stones must be laid on a sustainable gravel and sand layer in accordance with current standards for paving work. The joint material is water-permeable like ordinary joint sand. Therefore, the base layer must also be water-permeable. Repointing 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.Paving stones are laid on a sustainable gravel and sand layer in accordance with current standards for paving work. The joint material is water-permeable like ordinary joint sand. Therefore, the base layer must also be water-permeable. Sweep the filling material into the joints using a soft broom. Sweep lengthwise and diagonally on the joints until they are completely filled. Also, the weather and substarate should be dry for the joints to harden completely. The joints do not withstand rain whitin the first 24 hours after pointing. Maybe this is the case?

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. DANSAND® NO GROW™ Joint Filling Sand has been developed to prevent weeds, but it is not a weed killer. The product consists of washed and oven-dried silica sand, to which we have added a natural mineral. The mineral increases the pH-value and the ZAR value of the silica sand, creating an “unfriendly” environment that does not provide nourishment for weed plants. Hence, a weed seed that finds its way to your joint and tries to set roots here, will dry out after a short time.

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We have added a mineral additive to DANSAND ® joint filling sand, DANSAND ® Stone dust and DANSAND Kerama ®. The mineral has a naturally high pH value, which creates a nutrient-poor environment in your joints. The weed seeds dry out and can neither take root nor germinate.

Although the paving sand with weed killer is a little more expensive to buy initially than normal kiln dried sand. Buying the weed killing jointing sand should in the long-term help save you both time and money on maintaining you paving. It saves you money and time by not having to buy expensive weed killers. DANSAND® filling sand is not a remedy for weeds. To prevent existing weeds from growing, all weeds – including weed roots – must be removed before refilling the joints. 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 paving stones or the sublayer. Top up the joint.If the paving is new, vibrate twice using a protective rubber mat on the vibrating plate to avoid damage to the paving surface.

For new and existing paved surfaces of concrete and natural stone. Only to be used for outdoor use on a dry surface. Only suitable for an unbound base layer. Suitable for private use. Estimated consumption: 20 kg for approximately 5-10 m 2. For 14x21x5 cm paving stones with a joint width of 2–3 mm = 2.0 kg / m 2. Our coverage calculator helps you calculate the consumption of joint filling material. The filling depth must be at least 40 mm. The joint width must vary between 1-5 mm. 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.The ultimate goal is to AID water flow towards the house which has ACO drains around the edge to run the water away rather than have it spill into the gaps and into the ground around the house, missing the drains. Finish by lightly dampening the sand with water by misting with a garden sprayer to allow the sand to settle. I just jet washed my huge drive, next step is to kill the weeds and then I am looking to fill the huge gaps between the slabs. I am after advice on what to fill it with, keeping in mind the following: Dansand No Grow is widely available from many popular DIY and hardware retailers, commonly found in 20kg bags that should cover around 5-10 square metres each. Compact the joints using a vibrating plate - do this at least twice. Use a protective rubber mat to protect the paving.