Structure of a Cembrit fibre cement decorative rainscreen cladding installation 



1. Cladding panels

2. Ventilation space

3. Facade insulation

4. Aluminium brackets and rails, 
    supporting structure

5. Structural wall 
   with wall brackets 
   and thermal break between
   the bracket and load
   bearing wall


Structure of a Cembrit fibre cement decorative rainscreen cladding installation


1. Decorative rainscreen cladding panels in large or weatherboard formats


A rainscreen cladding provides optimal protection to the facade structure.

Decorative cladding offers a wide range of design options for architects and building owners. A unique visual appearance can be created by selecting different formats, shapes, and colours.

Cembrit cladding panels, in large-format or weatherboard formats form the basis of a wide range of different applications including:

  • Non load-bearing ventilated facades
  • Fascias and soffits
  • Weather resistant cladding
  • Window reveals
  • Gable ends
  • Dormers
  • Prefabricated facade elements

Durability, inflammability, light-fastness and frost resistance are common features of all Cembrit cladding products. Rear-ventilated facades from Cembrit guarantee fire protection thermal insulation, as well as airborne sound reduction. Panels can be installed in a variety of layouts– with open or pressure equalized joints, or weatherboard.

2. Ventilation space 


In a non load-bearing ventilated facade system, individual components, like insulation and cladding, are structurally separated from one another.

Ventilation space is created between the components to regulate moisture content within the building. A ventilation gap at the top and bottom allows air to pass into the ventilation space and moisture to evaporate naturally. This ensures moisture from the building itself and from users can dissipate. Wet exterior walls dry quickly, and insulation remains consistently dry and fully functional.

As a result Cembrit decorative cladding panels contribute to an optimal indoor climate and prevent mould growth.


3. Insulation 


Cembrit cladding panels can be used with almost any insulation material. To ensure a high level of building safety, we recommend the use of non-flammable materials (mineral wool insulation).

The UK Building Regulations Part L defines thermal building requirements. Any desired insulation thickness can be used in conjunction with Cembrit claddings in a ventilated rainscreen facade. They easily fulfil the requirements of the Building Regulations. Builders can even easily achieve U values exceeding its current specifications.

Contact us directly with any questions: we are happy to provide further information on insulation and suspended ventilated facades. Our technical service can make specific recommendations to help you with your own planning.


4. Aluminium supporting structure (brackets and rails) 


The supporting structure is the structural link between the structural wall and the facade cladding. The supporting structure is anchored to the structural wall, thereby transferring the weight of the rainscreen cladding panels to the building structure. The commonest material for the base structure is aluminium but hot dip galvanized, rust-proof steel or timber supports are also used.

The advantage of metal base structures is their ability to be adjusted to accommodate variations, in the structural load bearing walls, an excellent choice for renovation. Due to their fire resisting properties, a metal base structure should be selected for buildings designated as high rise under regulation 7 of the Building Regulations.

Cembrit works with all UK of suppliers of metal supporting structure systems for rainscreen claddings.

Our technical service department is happy to help you select the right supporting structure for your project.

» Contact us


5. Wall - Anchor base material 


Load bearing structural walls bear the weight of the decorative rainscreen panels and wind loadings on the facade.

These are constructed of structural steel frames, masonry or concrete in solid-construction buildings. Timber framed buildings can also be constructed incorporating fibre cement decorative rainscreen facades.