Rainscreen cladding is an insulation material designed to resist moisture and protect properties from excessive amounts of rainwater. This stops the property from developing issues related to condensation such as damp, mould and rot. Rainscreen insulation can improve the quality of the structure of the building and increase the lifespan of the building if fitted correctly.
Rainscreen cladding systems can be applied to new-build projects, extensions or refurbishments on residential and commercial buildings, or any structure that demands an improvement in efficiency. The Rainscreen systems are simple to install and cost effective.

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Moisture build-up in walls can cause damp, mould, rot and can damage the buildings’ structure. Damp walls can cause the building to lose thermal energy which can create an uncomfortable living or working space. Damp walls can also lead to damage to interior works such as paint flaking, wallpaper peeling of and if not treated quickly can worsen health conditions such as eczema, asthma, and allergies.
How does a rainscreen cladding system overcome these issues? How is wall insulation installed?
A rainscreen cladding system is fitted externally and applied directly on the present structure of the building. This produces a ventilated cavity between the buildings’ frame and the outer wall. The Rainscreen insulation is formed of two layers, one layer is an insulation board designed to improve the building thermal efficiency and the other layer is a breathable material to provide ventilation. The outer ventilation layer is bonded with cladding to provide protection from weather conditions increasing the durability of the product. The layers prevent water from entering the building frame or insulation materials.
The ventilation later of the insulation causes warm air to rise and carry cool air with it which removes moisture and creates a more balanced temperature of the internal walls. If in extreme weather conditions, the water will run down the panels and exit by evaporating.
Other methods to protect your property from rain is drain and ventilation systems and pressure-equalised systems.
Always consult a building professional when installing Rainscreen insulation to prevent the wrong insulation from being installed and the possibility of damaging your property.

How to install Rainscreen?

Install Rainscreen insulation using proprietary rainscreen facade cladding systems.

Always ask for guidance from the system manufacturer or supplier. Rainscreen façade systems are propriety and use differing methods to install the external cladding to the wall structure.

  • The Rainscreen Insulation boards should be installed break-bonded with edge of the boards lightly butted together and fitted to accomplish a close fit between the Rainscreen board and the substrate interface, this will avoid behind or between the boards.
  • Fixing and brackets should be taken into consideration when cutting the boards and the Rainscreen boards should be fitted neatly with no gaps. Where small gaps are unavoidable, fire rated expanding sealant can be used to fill the gaps.
  • The type of mechanical fixings and number of fixings being used to install the Rainscreen boards will differ depending on the location of the building. This includes the local topography, the height and width of the wall, the wall structure, and the type of mechanism and fixings being used to attach the cladding system.
  • A minimum if 3.13 fixings per m² are required to secure the insulation board to the wall structure.
  • The fixings should be evenly applied over the entire area of the board.
  • Fixings at board edges must be located > 50mm and < 150mm from edges and corners of the board and not overlap board joints.
  • The joints and breaks in the boards should always be taped using a 75mm minimum wide suitable self-adhesive aluminium foil tape. This will add extra protection to the boards.
  • Exposed edges should be protected by applying a suitable self-adhesive aluminium foil tape, with a 50mm minimum wide overlap onto the insulation board face.