Three dimensional geomat plus pre-sown biotextile

Product Composition

  • Three dimensional geomat

  • Cellulose fibres

  • First quality fertilizers

  • First quality seeds

Description of Virmat

With VIRENS reinforced anti-erosion pre-sown geomats and geonets, results are guaranteed even on steep and difficult terrain.

The three dimensional geomat in polypropylene VIRMAT, joins forces with VIRESCO the pre-sowed bio-textile so making possible the stabilisation of slopes, the settlement of the banks on the waterways and the grass covering of terrains up to 70° of inclination, which are not easy to regrass and are even more prone to instability.

It establishes a durable block device to control erosion and guarantees:
an amazing erosion control and slope protection;
an effective control of the thin soil loss and a uniform, fast and reinforced grass covering.

Right from the start the light but strenght geocomposite material gives you:
resistance to intense stress;
complete seed protection even on steeply inclined terrains;
fast grass covering even on impoverished soils;
enhanced anchoring of the roots to the soil and to the three dimensional structure;
durable slope reinforcement;
reduced necessary irrigation.

The VIRMAT three dimensional erosion control matting can be easily laid down just unrolling the rolls, making sure that it keeps in touch with the soil and anchoring it with pegs or U-shaped staples according to the amount of inclination.

The VIRMAT structure has been designed so to guarantee a high erosion control standard and to firmly keep a layer of vegetable soil on the upper part. This way humidity and thermal protection are constantly supplied to the seeds which are enclosed in the underlying bio-textile.

erosion control
slope reinforcement
grass covering and regrassing
road ditches
irrigation and drainage channelswaterways banks
landfill covers

slopes of considerable height
very steep slopes
banks and beds of streams
dry scarps
scarps composed of loose or friable soil
poorly irrigated embankments.

Technical Data Sheet of Virmat

Three-dimensional, pre-sown geo-mat VIRMAT

Gripping, three-dimensional, pre-sown geo-mat composed by a multilayer structure of polypropylene (PP) geogrids with a high index of voids, extruded and subsequently bioriented, overlapped and sewn together, assembled in the lower part with the biotextile of biodegradable cellulose fibers VIRESCO, pre-sown with seeds of herbaceous species and granular fertilizers for new sowing.


Ground fixing systems

We recommend fixing the pre-sown geomats to the ground for better adhesion with:

U-shaped iron staples U30

U-shaped iron staples U30
cm 30 x 7 x 30 diam. 6 mm
Suitable for VIRMAT and VIRMAT L

Chiodi in ferro U30

U-shaped iron staples U40

U-shaped iron staples U40
cm 40 x 7 x 40 diam. 6 mm
Suitable for VIRMAT

Chiodi in ferro U40



Lay VIRMAT on surfaces of a max. inclination of 70° and within a range temperature permanently higher than 5° and lower than 30.

Adjust the laying surface by removing any roots, vegetation, stones or debris, hoe 10 cm of soil, crumble the thickest pieces and level the ground so that VIRMAT can adhere to the soil without any void underneath.


Dig an anchor trench 60 cm beyond the ridge: the trench has to be 30 cm in width and in depth. The trench dimensions may vary according to the type of application, to the soil, to the inclination and width of the slope.

Place VIRMAT on the bottom of the trench and fix it in the centre with U-shaped staples (we suggest staples with 30 cm length and 5 mm diameter) each 1 m, this may vary according to the characteristics of the site.

Make sure that the green side of the product, made of the pre-seeded biotextile VIRESCO, is in contact with the soil.

Then fill the trench with soil and compact it gently.

Unroll VIRMAT, make sure that it will remain in contact with the ground. Fix the margins of the rolls with U-staples at a distance that varies according to the inclination and the characteristics of soil and site; on average place 1 staple each 1-2 m² of geomat.
Cover VIRMAT by hand or using mecanichal means with dry fine soil, be careful not to damage the geomat. Compact the soil gently and add other topsoil.

Irrigate for the first 25-30 days until the turf has completely settled.
VIRMAT can be cut and shaped with strong scissors.


VIRMAT, supplied in rolls, must be moved paying attention not to damage the packaging. It must be kept in a dry place, protected from exposure to sunlight, away from flammable materials and sources of heat.

VIRMAT, kept dry in the packaging nylon, lasts approx. two year.


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