Roofs

"Enjoy Comfortable buildings"

New living spaces

With attic insulation it is most easy to create new living space in new buildings and in renovation.
Isover insulation ensures a quiet and comfortable indoor climate in all seasons.

Isover - comfort and efficiency

Insulation between rafters with ventilation

Rw = 55 dB
U = 0,15 W/m²K

4421
cm Composition
1,5 Plaster board fireprotection board
1,5 Plaster board fireprotection board
3,5 Air gap - mounting lathing 3,5/5
Vapour barrier
10,0 Isover lightweight glass wool between counter battens 5/10

20,0 Isover lightweight glass wool between rafters
4,0 Ventilation area
2,4 Under roof - rough formwork
0,3 Layer roof skin (e.g. polymer bitumen roll roofing)

5,0 Counter battens min. 5/5 - ventilation area
3,0Roof lathing 3/5
Roof covering

The dimensions for the inlets and outlets of the ventilation area depend on the roof pitch and the length of the rafters.

Full rafter insulation with diffusion-permeable underlay foil and timber structure

Rw = 55 dB
U = 0,15 W/m²K

4423
cm Composition

Wood covering
3,0 Air gap - mounting lathing 3/5
1,5 Plaster board fireprotection board
3,0 Air gap - mounting lathing 3/5 Vapour barrier

10,0 Isover lightweight glass wool between counter battens 5/10

20,0 Isover lightweight glass wool between rafters
2,4 Under roof - rough formwork
Layer of vapour diffusion-permeable spunbonded web
5,0 Counter battens min. 5/5 - ventilation area
3,0 Roof lathing 3/5
Roof covering

The dimensions for the inlets and outlets of the ventilation area depend on the roof pitch and the length of the rafters.

Full rafter insulation with diffusion-permeable underlay foil and metal track system

Rw = 55 dB
U = 0,15 W/m²K

4425
cm Composition
1,5 Plaster board fireprotection board
1,5 Plaster board fireprotection board

Vapour barrier

10,0 Isover lightweight glass wool
20,0 Isover lightweight glass wool between rafters
2,4 Under roof - rough formwork
Layer of vapour diffusion-permeable spunbonded web
5,0 Counter battens min. 5/5 - ventilation area
3,0 Roof lathing 3/5
Roof covering

Full rafter insulation with diffusion-permeable cladding

Rw = 55 dB
U = 0,15 W/m²K

4426
cm Composition
1,5 Plaster board fireprotection board
1,5 Plaster board fireprotection board
3,0 Air gap - mounting lathing 3/5
Vapour barrier

10,0 Isover lightweight glass wool between counter battens 5/10

20,0 Isover lightweight glass wool between rafters
2,4 Under roof - rough formwork
0,3 Layer roof skin (e.g. polymer bitumen roll roofing)

5,0 Counter battens min. 5/5
3,0 Roof lathing 3/5
Roof covering

Rafter insulation - timber structure

Rw = 55 dB
U = 0,15 W/m²K

4427
cm Composition

Wooden rafters are visible

4,0 Wood covering

Vapour barrier
20,0 Isover lightweight glass wool between rafters
10,0 Isover lightweight glass wool between rafters
2,4 Under roof - rough formwork
Layer of vapour diffusion-permeable spunbonded web

5,0 Counter battens min. 5/5
3,0 Roof lathing 3/5
Roof covering

Rafter and full rafter insulation

Rw = 55 dB
U = 0,15 W/m²K

4429
cm Composition

Wood covering

3,0 Air gap - mounting lathing 3/5
1,5 Plaster board fireprotection board
3,0 Air gap - mounting lathing 3/5
Vapour barrier

20,0 Isover lightweight glass wool between counter battens 5/10
2,4 Under roof - rough formwork
8,0 Isover rigid loadbearing glass wool or stone wool panel
Layer of vapour diffusion-permeable spunbonded web

5,0 Counter battens min. 8/5 - ventilation area
3,0 Roof lathing 3/5
Roof covering
The spacing between laths and the dimensions of the counter battens and roof lathing depend on the type of covering and the static specifications. The pressure loading conditions dictate a minimum counterlathing cross-section of 5/8 cm.

Rafter insulation - timber structure with insulation between rafters

Rw = 55 dB
U = 0,15 W/m²K

44210
cm Composition
1,5 Plaster board fireprotection board
6,0 Lightweight glass wool between rafters
2,4 Under roof - rough formwork
Vapour barrier

12,0 Isover lightweight glass wool between counter battens 8/12

12,0 Isover lightweight glass wool between counter battens 8/12
Layer of vapour diffusion-permeable spunbonded web

5,0 Counter battens min. 5/5 - ventilation area
3,0 Roof lathing 3/5
Roof covering

The combined insulation offeres the advantage that the vapour barrier is laid over the full area of the rough formwork, thus avoiding damage by installation works. Care should be taken to ensure that the vapour barrier is laid on the warm side in the first quarter of the insulation layer.

Mono-pitch roof structure

Rw = 55 dB
U = 0,12 W/m²K

44211
cm Composition
1,5 Plaster board fireprotection board
5,0 Isover lightweight glass wool between counter battens 5/5
Vapour barrier

1,5 Chipboard panel
10,0 Isover lightweight glass wool between timber
i-section beams

20,0 Isover lightweight glass wool between timber
i-section beams

1,5 Chipboard panel
Layer of vapour diffusion-permeable spunbonded web

8,0 Counter battens min. 8/8
1,5 Chipboard panel
0,3 Layer roof skin (e.g. polymer bitumen roll roofing)
Tin roof covering

Timber i-section beams are also ideal for use as roof rafters. Advantages include the low dead weight, the low timber content due to the reduced cross-sectional area, and use as prefabricated roof pane and flooring elements.

Collar beam insulation

Rw = 50 dB
U = 0,15 W/m²K

44212
cm Composition
1,5 Plaster board fireprotection board
3,0 Air gap - mounting lathing 3/5
Vapour barrier

16,0 Isover lightweight glass wool between collar beams

14,0 Isover lightweight glass wool between rafters
2,4 Wood covering
1,5 Plaster board fireprotection board

Transverse insulation

Rw = 50 dB
U = 0,15 W/m²K

44213
cm Composition
1,5 Plaster board fireprotection board
3,0 Air gap - mounting lathing 3/5
Difunorm Vario

16,0 Isover lightweight glass wool between wood construction

14,0 Isover lightweight glass wool between rafters
2,4 Wood covering
1,5 Plaster board fireprotection board

Jamp wall

Rw = 47 dB
U = 0,15 W/m²K

44214
cm Composition
1,5 Plaster board fireprotection board
3,0 Air gap - mounting lathing 3/5
Membrane Vario

10,0 Isover lightweight glass wool between counter battens 5/10

20,0 Isover lightweight glass wool between wood construction

3,0 Air gap - mounting lathing 3/5
1,5 Plaster board fireprotection board

In order to avoid thermal bridges, thermal insulation must also be fitted behind thejamp wall on the ceiling of the top floor. The vapour barrier must not be omitted in this area.

Flat ("coffin-type") roof structure

Rw = 58 dB
U = 0,15 W/m²K

44215
cm Composition
0,5 Plaster
16,0 Reinforced concrete structure
Vapour barrier

14,0 Isover lightweight glass wool between counter battens 8/14

18,0 Isover lightweight glass wool between rafters
Layer of vapour diffusion-permeable spunbonded web

5,0 Counter battens min. 8/5
2,4 Under roof - rough formwork
0,3 Layer roof skin (e.g. polymer bitumen roll roofing)
Tin roof covering

Sanidach (renovation)

Rw = 51 dB
U = 0,18 W/m²K

44216
cm Composition
2,5 Interior plaster
3,5 Existing layer of insulation material
2,5 Air gap - mounting lathing 2,5/5
2,0 Isover rigid insulation board
Membrane Vario

12,0 Isover lightweight glass wool between rafters
10,0 Isover lightweight glass wool between counter battens

2,2 Chipboard panel
Layer of vapour diffusion-permeable spunbonded web

5,0 Counter battens min. 5/5 - ventilation
3,0 Roof lathing 3/5
Roof covering

The thermal insulation is laid from the outside, so that the first insultion layer protects the vapour barrier from projecting nails. The climatic membrane Vario ,humidity adaptive vapour barrier is laid over the complete area between and over the rafters. The system improves the thermal insulation properties of existing roofs.