A vapour barrier is needed in cold roofs and for insulating moist spaces. The vapour barrier is regularly installed above the INFRAHEAT heaters, but it can also be between the cover material and the heater when heat transfer from the heaters to the cover material is ensured. In addition to plastic, a plate with plastic lamination can be used as a vapour barrier.
Cover material | Thickness mm | Element 125 W/m2 | Element 150 W/m2 |
---|---|---|---|
CHIPBOARDS e.g. Leijona, Vibopan (coated) | 8 | yes | yes |
10 | yes | yes | |
12 | yes | yes | |
16 | yes | yes | |
BOARD PANELING e.g. Pontti or slit panel | 8 | yes | yes |
12 | yes | yes | |
16 | yes | yes | |
22 | yes | yes | |
PLASTERBOARDS e.g. Cyproc | 9 | yes | yes |
11 | yes | yes | |
12 | yes | yes | |
FIBERBOARDS hard | 5 | yes | yes |
06 | yes | yes | |
FIBERBOARDS semi-hard e.g. Leijona (jute) | 8 | yes | yes |
10 | yes | yes |
When using other cover materials, make sure that the maximum thermal resistance values are not surpassed.
Maximum allowable thermal resistance (m² °C/W) | 125 W/m2 | 150 W/m2 | 175 W/m2 |
---|---|---|---|
0,16 | 0,13 | 0,09 |
Thermal resistance m = / cover material thickness (m) / material thermal conductivity (W/m²C)
CEO Kauko Jaakkola