65mm Mayplas Timber Frame Cavity Barrier TCB 551 - Pack of 40
Product Code:
48 m (Linear Meterage)
In stock
Estimated Delivery:
1 - 2 Days
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£79.90 79.90
£66.58 ex. VAT


Timber Frame Cavity Barrier 551 has been designed to prevent the passage of fire through concealed voids within the external fabric of a timber frame building.

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).
Specification :
  • For Cavity Size: up to 50mm (15mm compression required)
  • Thickness: 65mm
  • Width: 65mm
  • Length: 1200m
  • Pack Coverage/Linear Meterage: 48 m
  • Quantity per pack: 40
  • Thermal Conductivity:  0.038 W/mK
  • R-Value: 2.47 m²K/W
  • Fire Rating: A1


  • The Barrier is suitable for both vertical and horizontal positioning to the edge of cavities, around penetrations, at separating compartment lines and to sub-divide cavities.


  • Euroclass A1 fire rating / Tested and assessed for up to 60 minutes fire resistance (integrity and insulation) in accordance with BS 476: Part 20. 
  • ISO14001 - Environmental Management.
  • EN 13162 - Manufactured in accordance with.
  • A+ rating on BRE Green Guide