Envirograf Rainscreen Cavity Barrier Range

Availability: In Stock

Not available to purchase online, please CONTACT US. A range of flexible, moisture-resistant cavity barriers for providing an effective fire and smoke seal in the cavity between brick or block walls and rainscreen cladding. RS/WB Flexible Foiled Rainscreen Cavity Barriers A barrier consisting of an intumescent strip faced with high tensile foil, which expands to create a powerful fire and smoke seal. Available in a ventilated form with two rows of holes (RS/VWB), or faced with a cavity strip barrier (RS/WB/CV) which will expand outwards in a fire to seal off larger cavities. Can be fitted with either washer fixings or bracket fixings, depending on the width of the cavity. RSF and RSM Flexible Sponge Rainscreen Cavity Barriers Intumescent impregnated sponge barriers with fire and smoke stopping capabilities, clad in either moisture resistant foil (RSF) or a durable, intumescent-coated material (RSM). Available in a ventilated form fitted with one or two rows of holes (RSF/A and RSM/A), both of which are fitted a rubberised intumescent strip. Also available with a thick, front-facing strip of intumescent which will expand outwards in a fire (RSF/I and RSM/I). All are fitted with bracket fixings.


Barriers have a slim profile without compromising fire rating – will still protect for up to 2 hours.

Non-fibrous, dust-free and easy to install with washers or brackets.

The entire RS range can be fitted vertically or horizontally.

Order References:

RS/WB Rainscreen Barriers 

   WASHERS                                                       BRACKETS

Ref                                      Width                            Ref                                     Width

RS/WB/W80                     80mm                            RS/WB/B80                      80mm

RS/WB/W120                 120mm                           RS/WB/B120                  120mm

RS/WB/W150                 150mm                           RS/WB/B150                  150mm

RS/WB/W200                 200mm                           RS/WB/B200                  200mm

RS/WB/W250                 250mm                           RS/WB/B250                  250mm

Only with brackets                                                RS/WB/B300                  300mm

Only with brackets                                                RS/WB/B350                  350mm

RSF RANGE                  30/60 minutes / Thickness   40mm                 120 minutes / Thickness 50mm

RSF Non-ventilated                                    1 metre long

Ref                                  Width

RSF150                          150mm

RSF180                          180mm

RSF200                          200mm

RSF250                          250mm

RSF300                          300mm


RSF/I with intumescent                            1 metre long

Ref                                    Width

RSF/I/150                       150mm

RSF/I/180                       180mm

RSF/I/200                       200mm

RSF/I/250                       250mm

RSF/I/300                       300mm


RSF/A with ventilation holes                   1 metre long

Ref                                     Width

RSF/A/150                      150mm

RSF/A/180                      180mm

RSF/A/200                      200mm

RSF/A/250                      250mm

RSF/A/300                      300mm

RSM RANGE                  30/60 minutes / Thickness   40mm                 120 minutes / Thickness 50mm

RSM Non-ventilated                                     1 metre long

Ref                                  Width

RSM150                          150mm

RSM180                          180mm

RSM200                          200mm

RSM250                          250mm

RSM300                          300mm

RSM/I with intumescent                             1 metre long

Ref                                    Width

RSM/I/150                       150mm

RSM/I/180                       180mm

RSM/I/200                       200mm

RSM/I/250                       250mm

RSM/I/300                       300mm

RSM/A with ventilation holes                   1 metre long

Ref                                     Width

RSM/A/150                      150mm

RSM/A/180                      180mm

RSM/A/200                      200mm

RSM/A/250                      250mm

RSM/A/300                      300mm


The information displayed about the products on this website is to be used for guidance ONLY. We advise that all customers contact our technical department to obtain a free no obligation specification and quotation before purchasing goods directly from the website.

Please be aware that any negligence caused by failure to obtain the relevant advice, or availment of our specification and estimation service, will absolve International Passive Fire Ltd from any liability should Passive Fire Protection Products prepared, or used, by the purchaser, or any other parties, result in damage to property or human life, or for any monetary costs incurred due to incorrect usage.


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