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VAPOUR BARRIER
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Vapour barrier is needed in insulating cold ceilings and damp spaces. The vapour barrier is normally installed above the INFRAHEAT -heaters, but it can also be placed between the covering materials and the heater when the heat flow from the heaters to the covering material needs to be ensured. In addition to plastic, the vapour barrier can be made out of plastic-coated board.
The allowed covering materials in connection with the Infraheat-heating.
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Cover material
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Thickness
mm |
Element
125 W/m² |
Element
150 W/m² |
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CHIPBOARD
e.g. Leijona, Vibopan (coated)
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8
10
12
16 |
yes
yes
yes
yes |
yes
yes
yes
yes |
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BOARDED PANEL
e.g. Groove or gap panel
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8
12
16
22 |
yes
yes
yes
yes |
yes
yes
yes
yes |
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PLASTERBOAD
esim. Cyproc
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9
11
12 |
yes
yes
yes |
yes
yes
yes |
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WALLBOARDS
hard
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5
06 |
yes
yes |
yes
yes |
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WALLBOADS
medium hard
for example Leijona (juutti)
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8
10 |
yes
yes |
yes
yes |
When using other covering materials, one must make sure that the allowed thermal resistance values are not exceeded.
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Maximum
thermal resistance (m² °C/W)
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125 W/m² |
150 W/m² |
175 W/m² |
| 0,16 |
0,13 |
0,09 |
Thermal resistance m =
cover material (m) /
thermal conductivity of material (W/m²C)
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