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Wood plastics decking Grenadeck is also known as WPC – Wood-Plastic Composite compound (synthetic wood).
The material is produced by extrusion of the components under certain pressure and temperature.
Grenadeck Wood plastics is a combination of wood fibre and non-toxic thermoplastic polypropylene.

Wooden proportion - 60 %, polypropylene - 40 %

This combination is absolutely unique due to its extreme durability, resistance to climate influences and maintenance free care.


The material of the decking profile Grenadeck is dyed in  bulk, i.e. the material displays and preserves the same solid color tone in case of surface scratches or damage.

Grenadeck also subjects to natural shading (known as wooden patina) - due to the presence of sawdust, the color fades over time. Fading takes several weeks to months and then retains throughout the product’s lifetime. This effect is the same for all wood products.
Natural exposure may roughen the surface of the floor profile Grenadeck.
Grenadeck terrace system is 100% recycable. It is not made of wood, but from constantly renewing natural resources (cultivated coniferous stocks). Grenadeck  subjects to the wood regulations and is categorized as AII. Remnants of our Grenadeck are recommended being disposed as bulky waste or put into junkyards.
Environmental commitment of Grena Inc: if Grenadeck profiles are without metal pieces, we will take them back for recycling.
Terrace boards Grenadeck are exceptionally durable and long lasting – they contain environmentally friendly polypropylene.


Grenadeck decking profiles are made:

  • in five colors – brown, sand, gray, red–brown and orange
  • in two surface finishes - brushed and not brushed
  • in two versions - surface terasso and face
terasa Molo terasa

Molo bazen





With extreme weather conditions changes (lasting frost to -20 °C / -4  °F - long thaw - re-frost) Grenadeck reaches the same values and changes as solid wood.
Grenadeck terraces are more weather resistant than wood and the possibility of wood-decaying rot attack is considerably smaller  than for wood.

Grenadeck is a high quality substitute for exotic woods.
Grenadeck terraces are up to 50 % lighter than exotic wood.
Grenadeck profiles are without the imperfections of wood and growth defects, such as knots, insect holes, etc.
Grenadeck profiles are free of rough splinters and cracks, and they do not split and twist.


Grenadeck terraces are not slippery even when wet!
Chlorinated water at a standard concentration for swimming pools has no effect on Grenadeck profiles.
Maintenance-free surface does not need special oil treatments or protective coatings, zero costs for preservation.
Grenadeck is easily assembled and analyzed.
The Grenadeck terrace system is easily assembled and disassembled (by using only ordinary woodworking tools).



tel.: +420 381 549 111
fax: +420 381 581 071
e-mail: grena@grena.cz
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