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Excellent thermal insulation and soundproofing!
Kalzip energy-saving roof systems are designed to enhance a building’s energy efficiency by providing effective thermal solutions. By reducing heat loss during winter and limiting heat gain in summer, these systems help lower energy costs. The construction minimizes thermal bridges, contributing to improved overall thermal performance. Kalzip energy-saving roof systems are available in various designs to accommodate different building requirements and are engineered for straightforward installation.
The advantages of the Kalzip energy-saving roof:
Roof structure DUOPLUS ON Trapezoidal Steel/Aluminium structural deck

Trapezoidal Steel/Aluminium structural deck
Vapour control layer
Rigid thermal insulation
DuoPlus rotatable clip rail
DuoPlus rotatable clip rail adaptor with Kalzip E type clip
Compressible thermal insulation
Kalzip aluminium profiled sheet
Kalzip Duoplus
on Trapezoidal Steel/Aluminium structural deck
1. Trapezoidal Steel/Aluminium structural deck, 2. Vapour control layer, 3. Rigid thermal insulation, 4. DuoPlus rotatable clip rail, 5. DuoPlus rotatable clip rail adaptor with Kalzip E type clip, 6. Compressible thermal insulation, 7. Kalzip aluminium profiled sheet
Kalzip Duoplus
on concrete DECK
1. Concrete deck, 2. Vapour control layer, 3. Rigid thermal insulation, 4. DuoPlus rotatable clip rail, 5. DuoPlus rotatable clip rail adaptor with Kalzip E type clip, 6. Compressible thermal insulation, 7. Kalzip aluminium profiled sheet
Roof structure DUOPLUS ON CONCRETE DECK

Concrete ceilings construction
Vapour control layer
Rigid thermal insulation
DuoPlus rotatable clip rail
DuoPlus rotatable clip rail adaptor with Kalzip E type clip
Compressible thermal insulation
Kalzip aluminium profiled sheet
Duoplus on Timber roof construction

Formwork made of wood-based material
Vapour control layer
Rigid thermal insulation
DuoPlus Rotable Clip Rail Type E
Duoplus rotable clip adapter with Kalzip E type clip
Compressible thermal insulation
Kalzip aluminium profiled sheet
Duoplus on Timber roof construction
on timber formwork
1. Formwork made of wood-based material, 2. Vapour control layer, 3. Rigid thermal insulation, 4. DuoPlus Rotable clip rail, 5. DuoPlus rotable clip adapter with Kalzip E type clip, 6. Compressible thermal insulation, 7. Kalzip aluminium profiled sheet
Kalzip Duo
Trapezoidal Steel/Aluminium structural deck
1. Trapezoidal steel/aluminium structural deck, 2. Vapour control layer, 3. Rigid thermal insulation, 4. DuoPlus Rotable clip rail Typ E, 5. DuoPlus rotable clip adaptor with Kalzip E type clip, 6. Compressible thermal insulation, 7. Compressible thermal insulation, 8. Kalzip aluminium profiled sheet
Roof structure KALZIP DUO ON TRAPEZOIDAL STEEL DECK

Trapezoidal steel/aluminium structural deck
Vapour control layer
Rigid thermal insulation
DuoPlus Rotable Clip Rail
DuoPlus rotable clip adaptor with Kalzip E type clip
Compressible thermal insulation
Compressible thermal insulation
Kalzip aluminium profiled sheet
* The U Value 0.18 is achieved as follows 100mm compressed thermal insulation + 100mm rigid thermal insulation [E100 and DuoPlus Rail] = 0.177 W/m2K .
| Basic insulation | E20 | E40 | E60 | E80 | E100 | E120 | E140 | E160 | E180 |
|---|---|---|---|---|---|---|---|---|---|
| 100mm | 0,286 | 0,248 | 0,219 | 0,197 | 0,177 | 0,162 | 0,150 | 0,138 | 0,129 |
| 140mm | 0,225 | 0,201 | 0,182 | 0,166 | 0,152 | 0,140 | 0,132 | 0,122 | 0,115 |
U-values in W/(m² x K) for the combination of Base insulation (100 mm or 140 mm) and compressible thermal insulation according to the selected E-clip types with thermal conductivity level WLS 037 or 035 and for a clip count of 2 clips/m²
| Variation | Basic insulation | Insulating felt | Compressed insulation thickness (mm) | U Value (un-bridged) | U Value * (bridged) |
|---|---|---|---|---|---|
| 1 | WLS 024 | WLS 032 | 100 + 110 140 + 190 | 0,129 0,084 | 0,135 0,090 |
| 2 | WLS 037 | WLS 035 | 100 + 110 140 + 190 | 0,167 0,107 | 0,177 0,115 |
| 3 | WLS 040 | WLS 040 | 100 + 110 140 + 190 | 0,186 0,119 | 0,196 0,127 |
* U-values in W/(m² x K) for the combination of thermal insulation materials with different heat transfer coefficients and insulation thicknesses for a clip count of 2 clips/m²