Bentonite cord – is a unique material consisting of 75% bentonite clay. The uniqueness of this component lies in its ability to expand when in contact with water. In other words, the clay swells, creating a jelly-like mass that fills voids, cracks, and depressions. A bentonite waterstop can increase in size up to 4 times. Due to such properties, the material has gained significant popularity in the construction sector.

Bentonite waterstop is often called "hydrostop" because it truly stops water. It is used for waterproofing and sealing construction joints. This applies to both old structures under reconstruction and new buildings.
The waterstop quickly and easily provides a long-term solution for sealing joints in concrete structures. That is why it is so highly valued by builders.
Since joints can vary, the waterstop comes in different shapes and sizes. Our range includes: 5x10mm, 10x20mm, 15x25mm, and a round shape with a 22mm diameter. The standard length of a roll is 5 linear meters. We produce the waterstop using our own technology, which has already proven itself in the construction market. Our "hydrostop" is black in color.

The material offers numerous advantages:
- Affordable price;
- Installation (very quick and easy);
- Temperature range (due to its composition, the material can be used and installed year-round. Whether it is -15°C or +30°C outside, bentonite performs its functions);
- Versatility (used in both horizontal and vertical planes);
- Plasticity.
The waterstop can be used in: private construction, industrial construction, foundation joints, tunnel joints, basements, swimming pools, fountains and wells, collectors, etc. Thus, the scope of application is extremely wide.
Let's take a closer look at exactly which joints the bentonite waterstop seals:
- cold joints;
- construction joints;
- utility penetrations;
- holes after removing formwork in concrete;
- sealing interpanel and panel joints;
- sealing of engineering structure inlets;
- sealing "floor-to-wall" joints;
- sealing panel seams;
- sealing joints between slabs;
- injection waterproofing.


The size and shape of the waterstop are selected depending on the type of joint to be filled. For example: for sealing holes, a 22mm round waterstop is used; for utility penetrations, a 5x22mm waterstop is suitable; and for cold joints, 10x20mm, 15x25mm, or 20x30mm are appropriate.
To summarize! Bentonite waterstop is a waterproofing material that has proven to be reliable, budget-friendly, and very easy to install. You can find more details on how to correctly install bentonite waterstop in our next article.
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