Type E External Cavitray Insert into an Existing Wall - Universal

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Product Description

Universal external angle. 220mm x 220mm. For convenience Type E standard internal and external angles are equally handed. Additional perp joints will therefore occur when bricking back.

The Type E is a preformed DPC cavitray which is inserted into an existing cavity wall. The Type E requires only one course of bricks to be disturbed, with just a few bricks removed at any time. The self-contained Type E cavitrays are the length of two bricks, and clip together, so long runs are easily and quickly created. Preformed angles cater for corners and piers. Each unit has stand-alone discharge via a weep. Suitable for all popular cavity widths because the cavity upstand of the Type E is hinged and adjusts to always suit the ‘as-found’ cavity width.

Cavitray for insertion into an existing wall.


Length: 330mm.
Widths accommodated: 215mm.
Thermal transmission: 0.15 to 0.17.
Material: polypropylene DPC.
Colour: black.
ODP: zero.


To prevent damp penetrating an original outside wall that has become an inside wall by virtue of an extension being built. To re-establish damp control measures where an original DPC has failed.


  • Brick-sized cavitrays permit progressive insertion.
  • Anticapil interlocking to form long runs.
  • Cavity widths compatible - upstand adjusts to suit.
  • Unobstructed cavity compartment area with stand-alone discharge.
  • Easy compliance with building regulations.

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Questions & Answers


Hi. Do you fabricate longer sections. I'm looking for a total length of 4m. With a left hand corner and right hand stop end.


I am afraid these are only available in the lengths listed, but do interlock with each other to create longer runs.

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Type E External Cavitray Insert into an Existing Wall - Universal

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