• Envirograf RS/WB Rainscreen Cavity Barriers
  • Envirograf RS/WB Rainscreen Cavity Barriers
  • Envirograf RS/WB Rainscreen Cavity Barriers

Envirograf RS/WB Rainscreen Cavity Barriers

Product 55 - RS/WB

We no longer stock this product, but can recommend Tenmat VFB Plus Ventilated Fire Barrier as our nearest alternative. Please contact our Technical Team on 0113 2455450 (option 2) or send a message to [email protected] prior to purchase/use for advice on suitability.



RS/WB Rainscreen Cavity Barriers are effective fire and smoke seals in the cavity between brick or block walls and rainscreen cladding. Can be fitted under and over insulation, horizontally or vertically, in cavities up to 400mm wide.

  • See references & sizes below
  • Intumescent fire protection
  • Can be bent to shape
  • Washer or bracket fixings
  • 1m & 2m lengths
  • Up to 132 minutes fire protection

References & Sizes

Non-ventilated, with washers, 1m & 2m lengths

Ref Size
RS/WB/W80 80mm
RS/WB/W120 120mm
RS/WB/W150 150mm
RS/WB/W200 200mm
RS/WB/W250 250mm

Non-ventilated, with brackets, 1m & 2m lengths

Ref Size
RS/WB/B80 80mm
RS/WB/B120 120mm
RS/WB/B150 150mm
RS/WB/B200 200mm
RS/WB/B250 250mm
RS/WB/B300 300mm
RS/WB/B350 350mm

Ventilated, with washers1m & 2m lengths

Ref Size
RS/VWB/W150 150mm
RS/VWB/W200 200mm
RS/VWB/W250 250mm

Ventilated, with brackets, 1m & 2m lengths

Ref Size
RS/VWB/B150 150mm
RS/VWB/B200 200mm
RS/VWB/B250 250mm
RS/VWB/B300 300mm
RS/VWB/B350 350mm
RS/VWB/B400 400mm

CV Strip, with brackets, 1m length

Ref Size
RS/WB/CV/B150 150mm
RS/WB/CV/B200 200mm
RS/WB/CV/B250 250mm
RS/WB/CV/B300 300mm
RS/WB/CV/B350 350mm

Envirograf RS/WB Rainscreen Cavity Barriers are flexible and lightweight, preventing the spread of fire and smoke through cavity walls with intumescent strips that expand in fire to seal up gaps, offering fire protection for up to 132 minutes. By containing a fire and slowing its spread, more time can be allowed for evacuation, as well as less damage caused to surrounding rooms and buildings.

Rainscreen cavity barriers are used between brick or block walls, and rainscreen cladding, and are available to order with or without holes for ventilation and drainage. The holes allow airflow and moisture to pass through, and seal up in the event of fire. The barriers can be bent to shape without harming their fire-stopping and smoke-penetration integrity, and installed vertically and horizontally.

Made from 4mm galvanised mesh with intumescent-coated cloth, covered with reinforced craft paper that is with fireproof adhesive.

Fixing Instructions

Depending on the width of the barrier, barriers are supplied with different fixings:

Up to 250mm wide barriers - These are supplied with 30mm up stand at the back, which include 3 fixing washers for fixing with screw or nails to concrete, brick, block, cement board, etc. 1m and 2m lengths available.

Over 250mm wide barriers - These are supplied with 30mm up stand at the back, which include 3 L-shaped fixing brackets. These brackets have holes ready for fixing with nails or screws. 1m and 2m lengths available.

Rainscreen barriers with brackets and CV strips can be ordered between 150mm and 350mm width.

If you require, smaller size barriers with fixing brackets can be made to order. Contact our sales team on 0113 245 5450 for more information.

Envirograf Fire Cavity Barriers should be fitted by experienced professionals to ensure they are installed correctly. Products can only be guaranteed by Envirograf if fitted correctly and incorrect installations will be condemned if inspected. Check labels, fixing brackets, manufacturer installation instructions, etc. Should a site visit be required to check installation, this can be arranged upon request but will be chargeable.

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and ConditionsWe will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.

Any Envirograf products to be used in or for Harrods department store should be authorised with our Technical Team prior to purchase.

Product Details
Product 55 - RS/WB

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

questions Richard Mackin on 2019-07-16 13:10:02

Do you have internal and external corner pieces for this product or are they cut and jointed on site


They are to be cut on site.

Question about the product

* Required fields