Zedex 450mm DPC (9.0sq.m)

Visqueen Zedex CPT High Performance Damp Proof Course

Features and benefits

BBA certified - third party accreditation
Flexible cavity tray system - easy to detail and install on site
Gas resistant - part of the Visqueen Low Permeability Gas Membrane system to provide gas protection to NHBC Amber 1
Multi functional - also acts as a radon resistant damp proof course and can be used in conjunction with the Visqueen Radon
membranes to form a complete system for basic radon protection
Excellent tear resistance - robust and resistant to on site damage
Versatile applications - widths from 100mm to 1400mm
Visqueen Preformed Units available - simplifies complex or awkward detailing

Product description

Visqueen Zedex CPT High Performance Damp Proof Course (DPC) is a black, flexible 0.8mm co-polymer thermoplastic (CPT)
damp proof course and cavity tray system. It is supplied in 20m length rolls and the following widths: 100mm, 112.5mm, 150mm,
225mm, 300mm, 337.5mm, 450mm, 500mm, 600mm, 700mm, 750mm, 800mm, 900mm, 1000mm, 1200mm and 1400mm
Approvals and standards

Third party accreditation (BBA 94/3059)
Conforms to the specification requirements of NHBC Amber 1 applications
Conforms to the specification requirements of BR 211:2015
CE Mark EN 14909
Quality Management System ISO 9001:2015
Occupational Health and Safety System ISO 18001:2007
Environmental Management System ISO 14001:2015

Usage

Visqueen Zedex CPT High Performance Damp Proof Course is suitable for all masonry applications including residential,
commercial and multi storey buildings. It can be site formed into a built-in or surface fixed cavity tray to manage the downward
passage of water in cavity wall applications. The DPC can also prevent harmful ground gases from entering into the cavity, and is
suitable for use as a gas DPC for NHBC Amber 1 conditions or where radon gas exists. It can also be used on sleeper walls below
a ground floor construction e.g. beam and block floor system.

System components

Visqueen Zedex Jointing Tape, 100mm x 15m
Visqueen HP Tanking Primer, 5L
Visqueen Zedex DPC Surface Fixing System
Visqueen Preformed Units
VisqueenPro Detailing Strip, 300mm x 10m, 500mm x 10m

Storage and handling

Visqueen Zedex CPT High Performance Damp Proof Course should be stored vertically, under cover in its original packaging.
Care should be taken when handling the product in line with current manual handling regulations.

Preparation

Visqueen Zedex CPT High Performance Damp Proof Course can be cut with a sharp retractable safety knife or robust scissors.

Installation

When built into a masonry wall construction, Visqueen Zedex CPT High Performance Damp Proof Course should be installed on an
even bed of wet mortar, and any perforations in adjacent courses of masonry should be completely filled with mortar. To ensure
mortar adhesion, as soon as possible after laying the DPC, lay at least one further course of masonry including a bed of mortar. If
positioned on the sleeper walls below a suspended ground floor e.g. beam and block floor system, the DPC can be dry laid,
however all sharp protrusions must be removed from the substrate. The DPC must extend through the full thickness of the
masonry wall, including pointing, applied rendering or other facing materials.

When used as a site formed cavity tray, the DPC can be either built-in to the inner leaf or surface fixed to the cavity face of the
inner leaf.

When surface fixing the cavity tray, the substrate should be primed with Visqueen HP Tanking Primer and allowed to dry. The DPC
should be bonded to the inner leaf using Visqueen Zedex Jointing Tape and permanently secured using Visqueen Fixing Strip and
fixing suitable for the substrate. Visqueen Fixing Pins for both rigid urethane foam insulation boards, and pins for masonry
substrates are available.

To simplify complex or awkward junctions e.g. corners, changes of level, arch windows etc, an extensive range of Visqueen
Preformed Units are available.

All DPC to DPC laps and DPC to Visqueen Preformed Unit laps should be a minimum of 100mm and bonded with Visqueen Zedex
Jointing Tape.

Usable temperature range

It is recommended that Visqueen Zedex CPT High Performance Damp Proof Course and all associated system components
should not be used below 5°C.

Additional information

Where a gas DPC conforming to the specifcation requirements of BS 8485:2015 + A1:2019 is required, use Visqueen Gas
Resistant Damp Proof Course or Visqueen Zedex High Bond Damp Proof Course

For built-in internal and external corners Visqueen Zedex Preformed Units should be used see PFU-553 (90° unit) or PFU-501
(sloping unit)

For surface fixed internal and external corners Visqueen Zedex Preformed Units should be used see PFU-554 (90° unit) or
PFU-502 (sloping unit)

Do NOT install the DPC on dry bedded mortar - must be wet bedding.

Excellent performance under high compressive loads.