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'Open State' Cavity Barriers - External Envelope

KEY FEATURES

  • Allow continuous ventilation and drainage behind cladding
  • Up to 120 minutes fire integrity
  • Tested to ASFP ‘Fire Resistance Test of Open State Cavity Barriers’ utilising BS EN 1363-1 and Principles of BS EN 1366-4
  • Suitable for horizontal (open void) and vertical (full seal) applications
  • Fully qualified acoustic performance - vertical. For horizontal contact our Facades team

SIDERISE 'Open State' cavity barriers represent the default choice for market leading, high performance, ‘Rainscreen Cladding Cavity Barrier’ applications.

Used in the external envelope or fabric of buildings, they ensure the system will drain freely, whilst maintaining airflow and providing an effective hot smoke and fire seal.

SIDERISE RH 'Open State' horizontal cavity barriers

Incorporates a continuous bonded intumescent strip to the leading edge and encapsulated in a weather resistant polymer film. In the event of exposure to fire, this expands and fully seals the designed ventilation gap formed at the time of installation between barrier and the rear of the cladding, in compliance with CWCT and NHBC guidance for air gaps up to 50mm.

SIDERISE RV vertical cavity barriers

Are specifically intended to full fill the void. As a full fill barrier system, the integral intumescent strip is not required. This product is available with a factory applied DPC pre-bonded to the surface if required.

Note: This product was previously known as Lamatherm CW-RS cavity barriers for rainscreen cladding.

Watch the SIDERISE RH & RV installation guidance video.

RH & RV installation guidance video

Meet the Façades Team

Façades product range

'Open State' Cavity Barriers - External Envelope

A versatile stonewool cavity barrier for use in drained and ventilated facades that ensures the system will drain freely, whilst maintaining airflow and providing an effective hot smoke and fire seal. Read more

Perimeter Barriers & Firestops for Curtain Walling

Industry leading passive fire protection solution for curtain walling systems offering unrivalled movement, fire, smoke and acoustic performance. Read more

Mullion & Transom Inserts for Curtain Walling

Specialist acoustic insulation designed to reduce vertical and horizontal sound transmission in curtain wall buildings, improving the performance of hollow-framed facades and glazed areas. Read more

Acoustic Void Barriers - Facades

Offering exceptional sound transmission loss when used in conjunction with SIDERISE firestops. Read more

Acoustic Barrier Overlay - Facades

Increased 'floor-to-floor' sound transmission loss when used in conjunction with SIDERISE perimeter barriers & firestops for curtain walling. Read more

Window Reveal Liner

Sound absorption treatment for the uprating of sound insulation performance of secondary glazing. Read more

Linear Gap Seal - Facades

A flexible fire and acoustic seal for curtain walling facades accommodating building movement and offering up to 4 hours fire resistance. Read more

NXS Firesafe Spandrel Insulation

SIDERISE NXS spandrel insulation comprises firesafe stonewool lamella boards developed as a high strength insulation cores for bonding to glass spandrel panels. Complies with Approved Document B 12.5 & 12.7. Read more

Nexus Lamella Boards - Curtain Walling

SIDERISE NXR Nexus lamella boards provide a structural, firesafe, thermal insulation core specifically designed for use in bonded metallic composite panels. Complies with Approved Document B 12.5 & 12.7. Read more

Rockwool® Slabs

Versatile thermal acoustic insulation slabs are high quality resin bonded slabs that can be used for thermal, acoustic and fire insulation. Read more

Ancillaries

A variety of ancillaries form part of the SIDERISE insulation range and are available to order. Read more

Projects

Technical resources

Make an enquiry

Whatever your insulation requirement, whether you are in the construction, marine, transport or energy generation sector, we can provide technical advice and a tailored insulation solution.

Talk to our Façades Team who will be happy to have a look at your project.

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