EPDM GEOMEMBRANE
Firestone EPDM geomembrane
The main component of Firestone Lining Systems is Firestone EPDM geomembrane, a single-ply synthetic rubber waterproofing membrane. Firestone EPDM geomembranes can elongate over 300%, which enables the membrane to stretch and conform to objects in the subgrade. Firestone EPDM geomembranes remain highly flexible even at very low temperatures (down to –45 °C), enabling year round installation in a variety of climates and terrain.
Firestone EPDM geomembranes offer unmatched resistance to ultraviolet radiation and ozone. Firestone EPDM geomembrane is an inert material with low environmental impact during production and use. In addition, Firestone’s EPDM manufacturing facilities have received ISO 14001 certification.
Firestone geomembrane lifetime is over 50 years. First catchment build with Firestone geomemrane is in Spain. Its size is 12000m², built in 1973 and it is in use even today.
Emplacement
Firestone geomembrane needs protection against mechanical injuries. For that reason geomembrane needs to be protected with geotextile or sand. It’s forbidden to set gravel or crushed stone on geomembrane while it might be injured by rocks with sharp edges.
On embankments Firestone geomembrane is affixed into trench (depth ca 15-20cm), in smaller bounds, trench is not necessary – the upper edge of membrane can be hidden in soil or under the stone-lining etc.
In case large isolation areas it´s recommendable to set round or level gas and water drainage under the Firestone geomembrane .
Firestone geomembrane specifications:
| Thickness standard-sizes | Width (m) | Length (m) | Weight (kg/m²) |
| 1.02mm ('040') | 3,05*; 6,10; 7,62*; 9,15; 12,20; 15,25 | 30,50; 45,75*; 61,00* | 1,25 |
* – preordering required
| Physical properties | Method | Result | Unit |
| Specific weight | direct measurement | 1150 | kg/m² |
| Shore A durometer | ASTM D 2240 | 65 ± 10 | |
| Tensile strength – unaged – heat aged* | over 8,0 over 8,0 | N/mm² N/mm² |
|
| Elongation – unaged – heat aged* | UEAtc | over 300 over 300 | % % |
| Tear resistance | UEAtc | 11,7 | N/mm |
| Dimensional stability** (free) | UEAtc | below 0,5 | % |
| Low temperature flexibility | DIN 53361 | crack free at -30 | ºC |
| Static indentation (concrete) | UEAtc | L2 | |
| Water absorbency | UEAtc | 0,21 | % |
| Ozone resistance | DIN 7864 | crack free | |
| UV-resistances | ASTM G53-84 | crack free | |
| Peel resistance (concrete) | UEAtc | 27,8 | N |
* 84 days at 80ºC
** 24 hours at 100ºC
