As part of the IBSL covering range, we offer a vapour stop foil often referred to as Triplex or Mylar. Triplex foil is a three layer lamination of polyester film, aluminium foil and polyester film in very thin gauges, specially designed as vapour barrier in thermal insulations. Triplex foil combines the excellent vapour barrier properties of aluminium to the outstanding mechanical, chemical and thermal characteristics of polyester film, thus giving an ideal, flexible and efficient barrier material suitable for outdoor use. Insulation materials available with this covering include; Mineral Wool, Calcium Silicate, Cellular Glass, Polyisocyanurate and Phenolic.
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Physical Properties |
Result |
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Specific Gravity |
2.2 kg/dm3 |
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Weight |
110 g/m2 |
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Tensile Strength MD |
8.30kg/15x100m |
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Tensile Strength TD |
10kg/15x100m |
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Elongation MD |
54% |
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Elongation TD |
58% |
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Friction film/film |
0.45 Kinetic |
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Elmendorf MD |
400g/mm |
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Elmendorf TD |
700kg/mm |
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Chemical Properties |
Result |
Thermal Properties |
Result |
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Humidity absorption |
<0.3% |
Melting Point (polyester) |
250/265 °C |
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Steam permeability |
0.000001 g/h m2 mmHg |
Temperature resistance |
-60/+150 °C |
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Fungus resistance |
No attack |
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Benefits Include;