Physical Properties & Installation Guides
Geotextiles are a geosynthetic material used for applications civil including drainage, reinforcement of soils, separation of gravel and soil, environmental applications including de-watering of contaminated liquids, geomembrane protection.
The types of geotextiles are woven and nonwoven. Drainage applications would typically use a nonwoven due to their ability to filter without clogging and unpaved roads normally use a woven geotextile.
Nonwoven polypropylene (PP) geotextiles are made from needle punched polypropylene staple fibre. These fibers are cut, opened, laid onto a web, needled, inspected, tested and rolled. The production technique produces a product described typically as “a nonwoven needle punched geotextile”.
Roadway stabilisation/ separation
Roads and highways are built using geotextile to prevent aggregate from mixing with the subgrade and to strengthen the soil, reducing pot holes
Syntex nonwoven geotextiles are ideal for drainage applications. Unlike woven geotextiles (with the exception of monofilament drainage fabrics), polypropylene nonwovens resist clogging. Nonwovens are placed in direct contact with the earth where drainage stone, perforated drain coil, etc may be placed. The nonwoven filters soil and waste while allowing water and leachate to pass.
Syntex heavy weight nonwoven geotextiles will cushion and protect geomembranes from puncture caused by aggregate and basecourse. Gas Venting: Heavy weight nonwoven geotextiles are used for collection and lateral transmission of liquids and gases that may build up under a geomembrane used in a capping of waste facility.
Hard amour underlay
Syntex nonwoven geotextiles are recommended to help relieve hydrostatic pressure beneath hard armour and prevent soils from migrating to the surface providing an effective erosion control method.
Woven geotextiles are manufactured by extruding polypropylene film and then slitting the film into individual yarns which are then woven to form the geotextile.
Mudstop woven geotextiles provide a stable base for unpaved roads. The fabric prevents subsoil mixing with aggregate which, without geotextile, will quickly require repair. Not only will the soil migrate to the surface but also deep ruts will occur causing greater repair costs.
Mudstop woven geotextiles also provide stabilisation over soft ground. Where access roads become boggy due to vehicles and poor weather, a woven geotextile can provide the needed foundation by spreading the load across a wide area.
Mudstop is a permeable, woven polypropylene geotextile designed for applications where soil stabilisation and separation are major functions and strength is not critical.
When used and installed correctly the fabric may be used as follows:
- Separation of aggregates in parking, pavements, and roads
- Low cost temporary or permanent roading for construction vehicles in problem traffic areas
- Under aggregate to prevent loss of fill into subsoil and allow top cover to remain firm
- Filter lining for erosion control and stop banks
Noweed Weed control fabric is a UV stabilised heavy duty (110 gsm) woven polypropylene fabric. Manufactured to prevent weed growth and yet allow air to circulate! Soil is not soured and roots are protected from the spread of fungus and bacteria.
Noweed stands out from other fabrics which appear to be the same, due to its construction. An ordinary woven polypropylene prevents air flow, resulting in poor soil and poor growth. Noweed breathes and allows nutrients to filter through.
Note: As a woven polypropylene water flow rate can be slow to permeate through the fabric. For commercial growing it is recommended that irrigation be drip fed at the points of opening for the plants, this will ensure that water penetrates to the roots. For accessibility to the drip system it should be installed over the top.
A heavy duty woven weed fabric is superior to a nonwoven in several ways. Most importantly is UV life, a nonwoven will never last anywhere near the length of time of Noweed. Plus weed prevention, it is a heavy grade woven polypropylene with the premium a commercial grade fabric.
Noweed weed control fabric is used by landscapers, commercial growers, home and garden. Suitable for commercial crops, pebble and bark gardens, and weed control without the hazards of chemical sprays which endanger the growth and health of other plants. The fabric can be used both in ground or as an overlay for container growing.
Groshield fabric is a white, non toxic, lightweight fabric with excellent ventilation properties. It is formulated especially for horticultural uses from spunbonded polyester fabric. The special formulation and fibre distribution combine to offer exceptional strength and durability.
- Grass seed garden blanket – Groshield fabric is an ideal cover for seeded lawns. It protects the seeds from birds, and insulates the ground to quicken the germination process.
- Extend growing season – the fabric insulates against frost and cold (to approximately -3°C for the 20gsm and up to -7°C for 35gsm). Overall protection varies with respect to elements such as wind & humidity. Planting may occur weeks earlier than usual. The autumn season may also be extended by several weeks.
- Protect gardens – Crops are less vulnerable to scorching sun, drying winds, pelting rain, hail, and frost.