ProctorGeo IRMA

Details

ProctorGeo IRMA is designed for use as a separating layer in ballasted or paved Inverted Roof Membrane Assembly (IRMA) flat roofs. ProctorGeo IRMA acts as a filter layer preventing fines and other debris from passing through, and also as a water flow reducing layer minimising cold rainwater flowing between the insulation and the roof waterproofing thus reducing the consequent rainwater cooling effect.

Rainwater that penetrates IRMA roof systems reaching the waterproof layer can impact on the thermal performance of the construction. To take account of this loss in thermal performance, the initial R-value of the roof should be corrected by subtracting a rainwater correction factor (determined using the method described in BS EN ISO 6946:2007) dependent on local rainfall and the proportion of rainwater reaching the waterproof layer under the insulation.

This can be substantially reduced by incorporating ProctorGeo IRMA as a water-flow reducing layer directly above the insulation, to drain rainwater off the roof before it reaches the waterproof layer.

ProctorGeo IRMA is impermeable to liquid water and substitutes conventional fleece filter fabrics that do not perform as an effective water draining separation layer.

 

Print/PDF ProctorGeo IRMA Data Sheet 

ProctorGeo IRMA

 

 

Features

  • High vapour permeability
  • Water resistance up to 2.5m head of water
  • UV stable for up to 2 months exposure in Australia and New Zealand
  • Resistance to the effects of lime water, sodium chloride solution and sulphurous acid in concentrations required by EN 1847
  • Strong, yet lightweight for ease of application
  • Resistant to mould
  • Available in 3m wide rolls to reduce overlaps
Applications
  • As a vapour permeable separating and water control layer for use in Inverted Roof Membrane Assembly (IRMA) Systems
Technical Data
 

 

 

Product Name: ProctorGeo IRMA
Product Description: Vapour permeable separating and water control layer for use in Inverted Roof membrane Assembly (IRMA) systems.
Product Code:
Colour:
Width x Length:
Resistance to water penetration:
Resistance to water penetration after artificial
ageing:
Flexibility at low temperature:
Tensile Strength after artificial ageing MD/CD:
Resistance to tearing MD/CD:
Resistance to the effects of lime water, sodium
chloride solution and sulphurous acid:
Hydrostatic Pressure:
ProctorGeo IRMA
Dark Grey
1.5m x 50m (75m2) or 3m x 50m (150m²)
Class WI

Class WI
-20°C
> 170/100 N/5cm
>60/70 N

Pass
> 2.5m
Classification:

This product has been manufactured in
conformity with EN 13859-1:2. Quality control checks on thefinished product include:

  • Weight
  • Tear
  • Dimensional stability
  • Reaction to fire
  • Tensile strength and elongation
  • Water resistance
  • Water vapour transmission
  • Properties after artificial ageing

Print/PDF ProctorGeo IRMA Data Sheet

 
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