Concept Rainscreen Cladding Barrier consists of rigid strips of non-combustible mineral wool that have all four edges faced with bright Class O reinforced foil. To one edge, a length of intumescent strip has been factory applied.
Concept Rainscreen Cladding Barrier is designed to provide a horizontal barrier that will prevent the passage of smoke and fire whilst maintaining the requirement to provide a 25mm or 50mm cavity behind rainscreen cladding systems. This allows any penetrating water to drain vertically and a free flow of air around the building envelope.
SIDE VIEW SHOWING RAINSCREEN BARRIER
HELD IN PLACE BY THE UNIQUE RETAINING BRACKET
Standards and Performance
The mineral wool core of a Concept Rainscreen Cladding Barrier is non-combustible to BS476: part 4: (1984).The product has been independently tested adopting procedures and criteria of EN1363-1-1999 and principles of EOTA-TR31
Concept Rainscreen Cladding Barrier is manufactured to suit the specific cavity width, fire rating and residual gap required.
- RCB 60/25 60 minutes fire 25mm gap
- RCB 60/50 60 minutes fire 50mm gap
- RCB 90/25 90 minutes fire 25mm gap
- RCB 120/25 120 minutes fire 25mm gap
- RCB 100/50 100 minutes fire 50mm gap
For vertical barriers in rainscreen systems it should be possible to fully fill the void with Concept Firestop Slab. We recommend the slab is foil faced on all four sides to minimise the risk of moisture penetration.
Firestop 60 provides 60 minutes fire resistance
Firestop 120 provides 120 minutes fire resistance
Rainscreen Cladding Barrier is secured to the inner structural wall utilising one of the unique Rainscreen Barrier Retaining Bracket systems.
For smaller cavities, these are supplied with a flat shaft to suit the specific barrier width supplied. Wider cavities utilise our unique self retaining bracket. Care should be taken to ensure the insulation fits tightly into the bracket and is held firmly against the inner structural wall.
Two brackets should be used per length of barrier sited approximately 250mm from each edge. The brackets are secured to the inner wall using steel anchors or screws before the insulation is “push fitted” in to place. Adjacent lengths of barrier should be tightly butted and the top of the joint sealed with foil tape.
Our technical staff would be pleased to advise in more detail on individual requirements.
RETAINING BRACKETS ARE FIXED TO THE INNER STRUCURAL WALL BEFORE THE BARRIER IS FITTED.
THE INTUMESCENT EDGE STRIP IS SITED ABOVE THE
RETAINING BRACKET ALLOWING FULL EXPANSION