Application

  • To protect against dampness and rising land gases within external cavity walls. Cavicloak Rise and Fall Barrier Profiles differ from conventional cavity barriers as their use eliminates the need to support merging protective mediums at a higher course level within the cavity wall.
  • Traditional and timber frame construction compatible.
  • New work applications.
  • Inner skin projection can be extended inwardly to suit various construction configurations.

Description

Preformed self-supporting horizontal damp proof course (DPC).

Conventional cavity barriers rise a minimum of 150 mm within the cavity and are supported by being built-into the nearest/ highest inner skin course.

When the inner skin is constructed of blockwork, the course is regularly higher up, therefore the formation uses additional material. This formation also creates an arrangement where the barrier top must be linked with the oversite membrane, a necessary requirement when protecting the building (and its inhabitants) against contaminated land gases such as Radon.

Rise and Fall Barriers are self-supporting and offer the convenience of starting within the outer skin and finishing within (and beyond) the inner skin at the same level. A more easily-managed build sequence and compact protective arrangement is secured. Integration of barrier and oversite membrane is at the lowest possible level.

Supplied in long lengths with internal and external angles and a range of stepped links. Once bedded onto both skins and joined utilizing sealing capping profiles that straddle abutting sections, raising of the cavity wall may continue. Barriers are usually supplied with the inner skin section projecting 150 mm beyond the inner skin internal face.

This permits the membrane and barrier to positively integrate. Important: Overlapping of Rise and Fall Barriers is not possible. Adjoining sections must be butted together and tape linked.

Features and benefits:

  • Self-supporting defined profiles.
  • Higher level inner skin interruption eliminated.
  • Easy interfacing with membrane.
  • Avoids gaps in cavity insulation.
  • Chlorofluorocarbons (CFC) free and has Zero Ozone Depletion Potential (ODP).
  • May be used if cavity insulation is present.
  • Does not extrude or compress under load.

Applications:

  • To protect against dampness and rising land gases within external cavity walls. Cavicloak Rise and Fall Barrier Profiles differ from conventional cavity barriers as their use eliminates the need to support merging protective mediums at a higher course level within the cavity wall.
  • Traditional and timber frame construction compatible.
  • New work applications.
  • Inner skin projection can be extended inwardly to suit various construction configurations.

General information

Size

As drawing

Insert drawing number.

Uniclass 2015

Pr_25_57_21_35 Gas-resistant damp-proof coursesPrimary

CAWS

F30/270 Meshwork joint reinforcement

F30/360 Gas resistant damp proof courses/ cavity trays

F30/54 Gas resistant dpcs/ cavity trays

F30/56 Preformed cavity trays

Specification data - Gas-resistant damp-proof courses

Product Reference

Cavicloak Rise And Fall Barrier

Size

As drawing

Insert drawing number.

Standard product features

Technical characteristics:

  • Material: Polypropylene.
  • Colour: Black.
  • Dimensions: All dimensions and shapes variable.
  • Cavity width: From 50 mm (most widths accommodated).
  • Masonry skin styles: No known limitation.
  • Undulating masonry faces: Compatible.
  • Curved wall on plan applications: Yes (see manufacturer's literature for details).
  • Arrested water evacuation: Via Caviweeps (selection) in perp joints.
  • Thermal transmission (U-Value) of material: Negligible, 0.15–0.17 W/m²K.

Literature
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