Thermosheet gives high dampness protection (µd=180 m) and is nearly (99.99%) radon (gas) emission proof. It can be used as a vapour or moisture barrier. Thermosheet is also suitable to use in combination with other insulation material as a moisture barrier with extra high insulating value.
TONZON Thermosheets are available in large sizes, this way a whole wall can be covered with one piece of material. On the picture opposite you see a Thermosheet width 300 cm covering the complete wall .Window and door openings can be cut out on the spot. Thermosheets can also be used to insulate ceilings of garages and basements, or to insulate the upper side of stone or concrete floors.
Insulation value in walls
The extra insulation value of one or more fully enclosed vertical air layers each 20mm thick, with or without TONZON Thermosheet.
* U value is based upon a brick wall, uninsulated Rc=0,43 m²K/W, U-value =2,5 W/m²K.
Air layer |
Thermosheet |
Extra R value |
U value* |
| 0 air layer |
0 sheet |
no extra R |
U=2,5 |
| 1 air layer |
0 sheet |
R=0,17 |
U=1,66 |
| 1 air layer |
1 sheet |
R=0,65 |
U=0,93 |
| 2 air layer |
2 sheet |
R=1,35 |
U=0,48 |
| 3 air layer |
2 sheet |
R=2,05 |
U=0,41 |
| 4 air layer |
3 sheet |
R=2,75 |
U=0,32 |
| 5 air layer |
4 sheet |
R=3,50 |
U=0,25 |
| 6 air layer |
5 sheet |
R=4,25 |
U=0,21 |
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