Home > Companies > Cavity Trays Ltd > Cavi 240 Type SAF Vertical Barrier

The Cavi 240 vertical barrier is for use where separating walls join exterior cavity walls. They are angled so that each vertical length wedges into and against the vertical length underneath it. Water cannot permeate inwardly because all joins are made sloping forward towards the outer leaf.


  • Acoustic barrier.
  • Acts as vertical DPC.
  • CFC free with zero ODP.
  • Easy linking and continuity.
  • Exposure rating: Very severe.
  • Fire barrier, four hours rating.
  • Sloping shape deflects water forward.

Standard product features

Size (l x h):

2400 x 300 mm.


  • Envelopment: Polythene.
  • DPC: Polypropylene.


  • Envelopment: Red.
  • DPC: Black.

Insulation K value:

Mineral rock wool: 0.035 W/mK.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-20/455 Plastics cavity closers

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Cavity Trays Ltd


+44 (0)1935 474769

Product reference

Cavi 240 Type SAF Vertical Barrier


[50 mm]
[65 mm]
[75 mm]
[100 mm]
Consult Cavity Trays Ltd with requirements and insert details.

Semi-rigid DPC

[Not required]
Bonded to one side of the barrier where a rigid DPC presence is required.

Manufacturer details

Administration Centre,
Lufton Trading Estate,
Somerset, BA22 8HU
Tel +44 (0)1935 474769
Fax +44 (0)1935 428223
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