Energy-Saving Roof Kalzip®

Energy-saving roof systems DUOPLUS & DUO

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:

  • Virtually free of thermal bridges – resulting in an extremely low heat transfer coefficient
  • Low U Values can be achieved utilizing various insulation products
  • Reduced installation times due to prefabricated system components
  • Functional and harmonised system components
  • Excellent sound insulation values up to R’w = 50 dB (A), depending on the roof structure and insulations. Additional information is available on request : Contact us

Roof structure DUOPLUS ON TRAPEZOIDAL STEEL DECK


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Trapezoidal steel deck

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Vapour control layer

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Rigid thermal insulation

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DuoPlus Rotable Clip Rail Type E

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DuoPlus Rotable clip adapter with composite clip

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Compressible thermal insulation

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Kalzip profiled sheet

Kalzip Duoplus

on trapezoidal steel deck

1. Trapezoidal steel deck, 2. Vapour control layer, 3. Rigid thermal insulation, 4. DuoPlus Rotable clip rail Typ E, 5. DuoPlus Rotable clip adapter with composite clip, 6. Compressible thermal insulation, 7. Kalzip Profiled sheet

Kalzip Duoplus

on concrete DECK

1. Concrete deck, 2. Vapour control layer, 3. Impact-resistant thermal insulation, 4. DuoPlus Rotable clip rail Typ E, 5. DuoPlus Rotable clip adapter with composite clip, 6. Soft thermal insulation, 7. Kalzip Profiled sheet

Roof structure DUOPLUS ON CONCRETE DECK


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Concrete ceilings construction

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Vapour control layer

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Tread-resistant thermal insulation

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DuoPlus Rotable Clip Rail Type E

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DuoPlus Rotable clip adapter with composite clip

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Soft thermal insulation

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Kalzip profiled sheet

Roof structure DUOPLUS AS TIMBER RAFTER ROOF CONSTRUCTION ON TIMBER FORMWORK


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Formwork made of wood-based material

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Vapour control layer

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Tread-resistant thermal insulation

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DuoPlus Rotable Clip Rail Type E

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DuoPlus Rotable clip adapter with composite clip

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Soft thermal insulation

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Kalzip profiled sheet

Duoplus as timber rafter roof construction

on timber formwork

1. Formwork made of wood-based material, 2. Vapour control layer, 3. Impact-resistant thermal insulation, 4. DuoPlus Rotable clip rail Typ E, 5. DuoPlus Rotable clip adapter with composite clip, 6. Soft thermal insulation, 7. Kalzip Profiled sheet

Kalzip Duo

on trapezoidal steel deck

1. Trapezoidal steel deck, 2. Vapour control layer, 3. Impact-resistant thermal insulation, 4. DuoPlus Rotable clip rail Typ E, 5. DuoPlus Rotable clip adapter with composite clip, 6. Mineral wool insulation felt (compressible), 7. Soft thermal insulation, 8. Kalzip Profiled sheet

Roof structure KALZIP DUO ON TRAPEZOIDAL STEEL DECK


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Concrete ceilings construction

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Vapour control layer

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Tread-resistant thermal insulation

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DuoPlus Rotable Clip Rail Type E

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DuoPlus Rotable clip adapter with composite clip

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Mineral wool insulation felt (compressible)

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Soft thermal insulation

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Kalzip profiled sheet

U Values for different insulation thicknesses and combinations

* 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 insulationE20E40E60E80E100E120E140E160E180
100mm0,2860,2480,2190,1970,1770,1620,1500,1380,129
140mm0,2250,2010,1820,1660,1520,1400,1320,1220,115

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

VariationBasic insulationInsulating feltCompressed insulation thickness (mm)U Value (un-bridged)U Value * (bridged)
1WLS 024WLS 032100 + 110
140 + 190		0,129
0,084		0,135
0,090
2WLS 037WLS 035100 + 110
140 + 190		0,167
0,107		0,177
0,115
3WLS 040WLS 040100 + 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

Ideal thermal insulation and high sound insulation

The advantages:

  • Variable thermal insulation thicknesses up to 345 mm
  • Use of all E clip types and heights
  • Complete system from a single source
  • For substructures made of steel trapezoidal profiles, concrete, porous concrete and wood

Applications of energy-saving roofs:

  • Public buildings: Kalzip energy saving roof systems are often used in public buildings such as schools, libraries and government buildings to reduce energy costs and environmental impact.
  • Industrial and commercial buildings: The Kalzip energy-saving roof system is ideal for large industrial and commercial buildings such as factories, warehouses and shopping centres.
  • Residential quarters: The roof systems can also be used in residential neighbourhoods to increase energy efficiency and reduce energy consumption.
  • Sports and leisure building: The Kalzip energy-saving roof system is also suitable for sports and leisure buildings such as swimming pools, ice rinks and fitness centres.


Profile widths and profile shapes Product downloads Accessories for roof structures

Example projects for energy-saving roof systems

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