Guidelines for thermal insulation with URSA® wool

Required tools and materials:
1. Insulation foils URSA® SECO 150
2. Insulation foils URSA® SECO 200
3. Mineral glasswool URSA® DF35 "Super house"
4. Mineral glasswool insulation felts URSA® DF40 "Warm celling"
5. Mineral glasswool insulation felts URSA® DF45 "Warm house"
6. Mineral glasswool insulation panels URSA® FKP "Energy saving house"
7. Granulated mineral glasswool THERWOOLIN
 
Guidelines for thermal insulation with URSA® wool:

Step 1
The first step in insulating a timber or a new reinforced concrete floor is fitting the URSA® SECO 150 (200) insulation foil. This is not necessary for previously laid reinforced concrete floors.

Step 2
Next, URSA® mineral glasswool felt (URSA® DF35, DF40, DF45) or panels (URSA® FKP) are applied. The wool strips must be tightly joined.

Step 3
The roofing must be protected from leaking and ventilation openings must be secured against snow and rain infiltration.

Step 4
The URSA® mineral glasswool must be ventilated. The total area of the ventilation openings above the wool surface should amount to 1/500 of the flat roof surface: both from the windward and the leeward side.

Flat roofs without a dedicated supporting structure can be thermally insulated with the THERWOOLIN granulated glasswool, blown in with a special compressor:

Step 1
The first step is an initial calculation of the thermal layer thickness, taking into account the flat roof structure condition, the current and the required heat transfer coefficient, and the actual height of the flat roof space across the entire section width.

Step 2
The calculation should include the following data:
- the calculated heat transfer coefficient of the granulated glasswool l = 0.034 W/ m K (according to AT 2002-11-0227)
- the settling coefficient of loosely poured granulated glasswool = 1.05
(d = dcalc x 1.05) d – the value is corrected to take settling into account

Step 3
The relative humidity of the granulated glasswool should not exceed 1.5 %.

Step 4
The THERWOOLIN granulated glasswool should be evenly distributed across the flat roof surface. Therefore, the filling process must be controlled, changing the position and making additional openings in roof panels if necessary.

Step 5
Granulated glasswool requires ventilation.
If uptake ventilators are used, then one 80mm uptake ventilator should provide proper ventilation for a granulated glasswool area of 25m2.