Rockwool 130mm TCB Cavity Barrier

130mm Rockwool TCB Cavity Barrier and PWCB Cavity Barrier products deliver superior fire protection for timber frame and masonry constructions. These solutions exceed minimum building regulation standards for fire resistance in concealed wall cavities, with proven performance up to 60 minutes of integrity and insulation capability.

Manufactured from non-combustible stone wool and wrapped in protective polythene sleeves, these cavity wall insulation barriers provide thermal performance and weather protection throughout installation. Colour-coded sleeves—red for TCB and white for PWCB—enable quick product identification on site.

The Rockwool cavity barrier combines fire safety, acoustic flanking control, and thermal bypass prevention in one integrated system. The product also seals perimeter edges effectively, minimising air infiltration and reducing associated heat loss.

Product specification

• Thickness: 130mm
• Width: 130mm
• Length: 1200m
• Length Coverage: 1.2 LM (linear metre)
• Quantity: 1
• Also Avaiable in packs of: 12
• Thermal Conductivity: 0.038 W/mK
• R-Value: 2.47 m²K/W
• Fire Rating: A1

Key points

• Euroclass A1 non-combustible.
• FLEXI Edge ensures tight friction fit.
• High performing acoustic, thermal and fire protection properties.
• Will not slump, even if studs shrink.
• Zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP).
• Easy to install
• Fire resistance up to 60 minutes (EI)
• Reduce acoustic flanking transmission
• Improves air leakage & heat loss
• Unaffected by building movement
• Suitable for vertical and horizontal applications
• Site durable & weather protected

Application

These 130mm Rockwool TCB Cavity Barriers work effectively in both vertical and horizontal configurations. For vertical installations, secure the flanges to the inner leaf at 150mm intervals using staples or clout nails before the outer cavity wall compresses the product. In horizontal applications, fasten only the top flange of the polythene sleeve.

Certification

Euroclass A1 fire rating: ROCKWOOL Cavity Barriers meet the highest fire safety standards and have been tested and assessed for up to 60 minutes of fire resistance (both integrity and insulation) in accordance with BS 476: Part 20.

• ISO14001: Compliant with Environmental Management standards.
• EN 13162: Manufactured in accordance with European standards.
• A+ rating on BRE Green Guide: Recognized for excellent environmental performance.

Fire Protection

These 130mm Rockwool TCB and PWCB Cavity Barrier products surpass minimum Building Regulation requirements for fire resistance within concealed wall cavities, delivering enhanced safety performance.

Resilient Performance

The TCB and PWCB Cavity Barriers remain unaffected by building movement, shrinkage, or thermal fluctuations, maintaining reliable performance throughout the building's lifespan.

Durability

Engineered to withstand on-site handling and installation stresses, these barriers provide permanent structural protection once installed, lasting the lifetime of the building.

Vertical or Horizontal Solution

ROCKWOOL Cavity Barriers deliver flexible installation options for both vertical and horizontal applications. Vertical installations allow both flanges to be secured to the inner leaf at 150mm intervals, whilst horizontal applications require only the top flange of the polythene sleeve to be fixed.

Acoustic Protection

ROCKWOOL Cavity Barriers effectively block flanking noise transmission through concealed cavities in external wall insulation and separating walls, enhancing acoustic comfort throughout the building.

More Information on 130mm Rockwool TCB Cavity Barrier

• Manufaturer Link: 130mm Rockwool TCB Cavity Barrier
• Explore our complete Rockwool Insulation range and refine by thickness or coverage using the left-hand filters. For product suitability advice or bulk discount quotes, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Best UK Rockwool Insulation Prices.