CONSTRUCTION  : Foil  20um aluminium ± 10%
   Film  25um polyethylene film ±10%
   Reinforcement 5 x 5 fibreglass scrim (2 x 2 yarns per cm)
   Weight  93 g/m² ± 10%
   Thickness  18 microns
 
 PROPERTIES : Tensile strength  Warp: 306 N/5cm  FED STD 191/5102
      Weft: 306 N/5cm

   Tear Strength Warp: 800g  ASTM-D-1242-63
      Weft: 800g

   Puncture resistance:  100 units ASTM-D781-65T
   (Beach)

   Permeability  0.33 Perms  ASTM-E-96-66A

   Corrosion resistance  No corrosion after 20 days
       FED SPEC HMB-100B at 49°C & 95% R.H

   Fire resistance  Fire propagation index
       BS 476: Part 6: 1981
       BS 476: Part 7: 1971  

   Temperature resistance Withstands 90°C continuous

   Heat-scalable  At 135°C