| Description
Many rainscreen and cladding systems are designed with
an open cavity to provide back ventilation. The cavity acts like an open
chimney to allow for moisture dissipation and to create a back pressure
to repel rain ingress.
However in a fire situation this chimney effect creates an open path for
the hidden spread of fire both vertically and horizontally behind the
cladding system.
The Astroflame range of fire rated cladding seals will maintain the ventilated
cavity in normal conditions, leaving a continuous free air space, but
in the event of a fire, the intumescent ventilated fire barrier will quickly
expand to seal off the cavity to prevent the spread of fire.
Ventilated Fire Barriers for Cavities 15mm - 50mm 
Many timber framed structures require a continuous ventilated to be maintained
to dissipate moisture and prevent damp problems.
The Astroflame ventilated fire barriers have been tested in combustible
timber constructions and can maintain the minimum 30 minute rating whilst
allowing continuous ventilation in normal conditions.
Astro Clad – AFFRCLAD35
Astro Clad – AFFRCLAD35 was designed to meet the NHBC requirements
to maintain a minimum 15mm ventilation gap in timber frame constructions.
The product has been successfully fire tested in maximum size cavities
of 25mm fitted directly onto combustible breather membrane and fixed into
the timber structure to provide at least 30 minutes fire rating.
It can additionally achieve greater fire ratings in non-combustible
structures.
Size:
35mm x 4mm x1000mm encased in foil Maximum cavity size; 25mm
Maximum free area; 83%
Fire ratings:
Minimum 30 minutes in Timber Structures
120 minutes in Non-Combustible Structures
To Order
Astro Clad Silver 35mm x 4mm x 1000mm AFFRCLAD35
Astro Clad – AFFRCLAD75
Astro
Clad- AFFRCLAD75 was developed following an increasing demand for a suitable
product to close off larger cavities up to 50mm in timber frame constructions.
The product has been successfully fire tested in cavities up to a maximum
of 50mm within both combustible timber structures and non-combustible
structures to provide up to 120 minutes fire rating.
Size:
75mm x 6mm x1000mm encased in foil
Maximum cavity size; 50mm
Maximum free area; 87%
Fire ratings:
Minimum 30 minutes in Timber Structures,
90 minutes on mineral wool over cement board
120 minutes in Non-Combustible Structures
To order:
Astro Clad Silver 75mm x 6mm x 1000mm AFFRCLAD75
Ventilated Fire Barriers for Cavities up to & over 125mm
Astro Clad – AFFRCLAD5050
Astro Clad – AFFRCLAD5050 was designed to provide a large continuous
open air space for cavities up to 125mm.

The product has been successfully fire tested to a maximum cavity size
of 125mm fitted directly onto combustible breather membrane and fixed
into the timber structure to provide at least 30 minutes fire rating.
 
In addition the ventilated fire barrier can be fitted in between phenolic
insulation to provide an effective fire barrier.
Size:
50mm x 50m x1000mm encapsulated in red polythene
Maximum cavity size:
125mm
Maximum free area:
60%
Fire ratings:
Minimum 30 minutes in Timber Structures
Minimum 30 minutes fitted between Phenolic Insulation
To order:
Astro Clad Red 50mm x 50mm x 1000mm AFFRCLAD5050
Astro Clad – AFFRCLADPLUS+
Astro Clad-AFFRCLADPLUS+ offers an effective fire barrier for cavities
over 125mm. The product has been successfully fire tested for up to 90
minutes fitted directly onto cement board.

The product not only offers a superior fire rating but also allows a
continuous ventilation space of up to 44mm. This provides excellent ventilation
behind the cladding whilst leaving enough free space for the installer
to easily install the cladding panels after the ventilated fire barrier
seal.
Finish:
Encapsulated in red polythene
Size:
Customer specifies the required depth based on formula below
75mm x 1000mm x Total Cavity Width minus 44mm (Custom Depth)
Maximum Air Gap:
44mm
Fire ratings:
90 minutes fixed to cement board
To order:
Astro Clad Red 75mm x 1000mm x Your Custom Depth mm AFFRCLADPLUS+
To order & specify
Quote: Quantity /Trade name/Product ref
Typical wording: 10/ASTRO CLAD / AFFRCLAD35
Health and Safety
See COSHH Sheet.
Installation
Please refer to our install sheet
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