Frequently Asked Questions

Yes. BioBarrier’s nodules release trifluralin in a controlled manner, forming a root-inhibiting zone without affecting water flow. It can be safely installed near irrigation lines, ensuring root control while maintaining system performance. 

Our nonwoven geotextiles provide superior filtration and separation by allowing high water flow rates while retaining fine soil particles. Unlike woven fabrics, their uniform pore structure minimizes clogging and ensures long-term permeability, especially in road and drainage applications.

The thermally bonded structure of our geotextiles creates a consistent pore size that balances water flow and soil retention. This design supports effective filtration without compromising strength or durability, even under dynamic loading conditions.

Overlap widths typically range from 12″ to 36″, depending on subgrade strength. On soft soils, wider overlaps or sewn seams are recommended. Anchoring with pins or ballast prevents movement during sub-base placement.

A permeable highly durable synthetic fabric general used in Civil Engineering and Building projects such as road and car park construction to stabilise loose soil and prevent erosion. TYPAR geotextiles are highly permeable nonwoven needle punched and thermally treated synthetic fabrics made from polypropylene used to separate, filter, reinforce, protect, or drain engineering soils. Typical uses include preventing intermixing of granular sub-base and subgrade layers, drainage and bedding materials. TYPAR geotextiles help reduce wastage/loss of expensive imported granular materials, improve structural performance and extend the life of the pavement/road/rail track. 

In most civil engineering or building applications the flow rate of ground water is quite low and often referred to as seepage for example back of wall drainage to prevent water pressure building up and pushing on a structure. In the cases of ground water seepage nominal flow rates are required in the drainage Geocomposites. Specialist applications such as landfill cell capping or basal drainage may require higher flow rates, have higher confining pressures due to the weight of fill and lower hydraulic gradients. In these specialist applications the correct grade of Geocomposite drain is selected based upon the anticipated site conditions, the relevant British, European or International design standard should be followed. 

A relatively thin sheet of two or more materials with a plastic drainage core that provides a high flow path for gas & liquids (usually ground water in Civil Engineering applications). The drainage core is bonded to a geotextile(s) to filter out soil particles and/or a geomembrane on the other side to provide a fluid barrier. Geocomposites are often specified as a value engineered and more sustainable alternative to traditional drainage aggregate.

TYPAR geocells confine infill material, reducing lateral movement and erosion. They distribute loads across a wider area, making them effective for steep slope stabilization and reducing the need for rigid retaining structures. 

Flat packed, palletized and strapped.  

For best results, install GrassProtecta over well-established grass, secure it with U-pins, and allow 4–6 weeks for grass to grow through before heavy use. This ensures full integration and maximizes load distribution and surface grip. 

Yes, very occasional HGV parking up to 8t per static axle load on firm to stiff ground. 

6 to 25 degrees Celsius (42.8 to 77 degrees Fahrenheit)

Grassprotecta expands in hot weather and contracts in cold weather. Leave a gap of 1cm between rolls when installing in cold (<10 deg centigrade) weather conditions. 

No, you can lay turf beforehand or use grass seed once Grassprotecta is installed. 

Yes, you can.

With a sharp pair of secateurs.

At least 10 years.

Up to 4 days per week. 

Yes, up to 1:20 (5%) 

Yes but we recommend restricting trafficking until after the grass has thoroughly established through the mesh and the grass has been cut several times.

6 –8 weeks during the growing season but may be longer at other times of the year.  

No, the ground must be firm and well drained. 

Turfprotecta is a light mesh designed for pedestrian and very occasional light vehicle traffic, the Grassprotecta mesh range is designed for all types off traffic from pedestrian to heavy vehicles. Please see the product selector and SDI guide for more details.

BodPave 85 is engineered for heavy-duty load support, capable of handling up to 400 tons/m² when filled and installed correctly. It’s ideal for fire lanes, overflow parking, and access roads, offering a permeable, grass or gravel-filled surface that meets SUDS and LID requirements.

The thermally bonded structure of our geotextiles creates a consistent pore size that balances water flow and soil retention. This design supports effective filtration without compromising strength or durability, even under dynamic loading conditions.

TYPAR geotextiles are made from polypropylene, offering excellent resistance to acids, alkalis, and organic solvents. This makes them suitable for use in contaminated soils, landfills, and industrial applications where chemical exposure is a concern. 

Yes. TYPAR geotextiles can be used as cushion or protection layers over GCLs, preventing puncture from overlying materials and enhancing the overall integrity of the containment system. 

TYPAR geosynthetics are UV-stabilized for short-term exposure during installation. For long-term exposed use, such as in GrassProtecta or BodPave 85, products are engineered with enhanced UV resistance to maintain performance over years. 

TYPAR products are manufactured in ISO-certified facilities using strict quality control protocols. Each batch undergoes testing for tensile strength, elongation, permeability, and puncture resistance to meet or exceed ASTM and ISO standards. 

TYPAR Geosynthetics products are supplied by our distribution partners, we do not supply direct to end customers/users. 

We do not include delivery charges in the price. We provide our products ex-works but can provide a delivery cost to meet customer needs.

We hold stocks of most common grades of TYPAR products based upon historic demand and forecasts provided by our distribution partners. The minimum order quantity for non-stock items will vary depending upon the type of products being manufactured and other orders being processed. Please contact our customer services team for further details.

Yes. TYPAR geotextiles maintain flexibility and strength in freezing conditions. Their permeability helps prevent frost heave by allowing water to drain, reducing the risk of subgrade expansion and surface cracking. 

TYPAR provides downloadable technical data sheets, installation guides, and CAD details through its website’s Technical Info / Downloads section. Custom support is also available for project-specific needs. 

Lead times vary by product and region, but TYPAR offers responsive logistics support and regional distribution to meet tight project schedules. Contact their sales team early in the planning phase for accurate delivery timelines. 

Flat packed, palletized and strapped.  

Pore size is a measurement of the gaps between the fibers within a permeable material such as a geotextile.  TYPAR nonwoven geotextiles consist of a tangled web of randomly orientated polypropylene fibers, which result in a wide range of different size pores (gaps) ideal for filtering soil particles of different sizes, (gravels, sands and course silts) yet allowing the passage of water. Samples are tested in a laboratory to determine the range of pore sizes.  To allow comparison between different geotextiles the apparent opening size (AOS) value is declared. The AOS is where 90% of the geotextile sample pores are of the same or smaller size (O90 value). The typical pore size allows designers to determine the suitability of a particular geotextile for filtering different grades of soil materials. 

The relative ability of a geotextile to resist objects or stones from bursting or pushing through the material. TYPAR nonwoven geotextiles have a high puncture resistance essential to resist construction damage during installation and placing of fill material with compacting equipment. Woven geotextiles generally have much lower puncture resistance and often (unseen) damage occurs during installation resulting in reduced performance or failure in the longer term. Static puncture resistance consists of pushing a 50mm diameter plunger through the geotextile and is measured in kN (higher is better). Dynamic puncture resistance consists of dropping a cone into the geotextile and measuring the size of the hole in mm (lower is better).

The relative ability of a geotextile to allow the passage of fluids or gas, usually water. TYPAR nonwoven geotextiles have very high permeability compared to similar weight woven geotextiles. The permeability of a geotextile is determined by recording the water flow rate in a laboratory test.