ProctorGeo IRMA is a water resistant and vapour permeable spunbonded polyolefin non-woven geotextile designed for use as a separating layer in ballasted or paved Inverted Roof Membrane Assembly (IRMA) flat roofs.
ProctorGeo IRMA acts as a vapour permeable separating layer preventing the passage of sand, soil and other debris and acts as a water control layer reducing the rainwater cooling effect caused by rainwater flowing in between the insulation and roof waterproofing layer. ProctorGeo IRMA substitutes conventional fleece filter geofabrics that do not perform as an effective water draining separation layer.
When rainwater in IRMA roof systems flows beneath the insulation this impacts negatively on the thermal performance of the roof. By incorporating ProctorGeo IRMA as a water-flow reducing layer directly above the insulation to drain rainwater before it reaches the waterproof layer, the need to compensate for such losses (determined using the method described in BS EN ISO 6946:2007) can be avoided.
Although ProctorGeo IRMA can be used as temporary protection during construction, it can not be used as a primary waterproofing membrane. The product may be damaged by careless handling, high winds or vandalism, and should not be left uncovered for longer than is absolutely necessary. Any damaged areas should be replaced before completion.
Ensure that ProctorGeo IRMA is covered as soon as possible, and not left exposed to UV for longer than 4 weeks. ProctorGeo IRMA is not to be used in installations where it could be exposed to long term UV radiation.
Water shedding filter fabric should be ProctorGeo IRMA tested ETAG 031, installed in accordance with product user guide.
Resistance to water penetration: Class W1
Resistance to the effects of lime water, sodium chloride solution and sulphurous acid (EN 1847): Pass
UV Stability: 4 weeks
Notes: Non conductive and not subject to corrosion.
Information on any known health risks on our products is listed in the Material Safety Data Sheets available from Proctor Group Australia.
|Thickness||EN 1849 – 2||0.38mm|
|Tensile Strength after artificial ageing|
| EN 13859-1;2 Annex C|
|Temperature Range||-40°C / 80ºC|
|Reaction to fire||EN 13501-2||Class E|
|Resistance to water penetration|
|Resistance to water penetration after artificial ageing||EN 13859-1;2 Annex C||Class W1|
|Flexibility at low temperature||EN 1109||-20°C|
Resistance to tearing
|≥ 60/70 N|
|Resistance to the effects of lime water, sodium chloride solution and sulphurous acid||EN 1847||Pass|
|Hydrostatic pressure||EN 20811||>2.5m|
|Water vapour transmission properties (Sd)||EN 12572||<0.035m|
|UV Stability||4 weeks|
|Roll Coverage (300mm overlaps)||60m²||135m²|
|Rolls per pallet||39 rolls||39 rolls|