Zedex CPT High Performance DPC Page 1 CE Mark to Damp Proof Course EN 14909
- Outperforms all other high performance flexible DPCs
- Contains no hazardous pitch or PVC plasticizers
- Excellent tear resistance under high compressive loads
- Low permeability to Radon and Carbon Dioxide gases
- BBA Certificate No.94/3059
Visqueen Zedex CPT High Performance Damp Proof Course (DPC) and cavity tray system is manufactured from co-polymer thermoplastic (CPT) providing all the characteristics necessary for it to perform effectively for the lifetime of the building in which it is incorporated. Zedex CPT DPC provides superior strength, tear resistance and flexibility and is compatible with all other Visqueen damp proofing, gas proofing and tanking protection systems.
Zedex CPT DPC is suitable for use as a DPC in all types of building construction and can be used in vertical, horizontal, stepped and cavity tray applications.
High tear and puncture resistant characteristics help avoid the failures caused by damage during installation, such as clearing mortar droppings out of the cavity, general
manhandling on site and during transport. Independent testing shows the tear strength of Visqueen Zedex CPT DPC to be many times that of traditional pitch polymer DPCs.
Visqueen Zedex CPT DPC is also available in a range of colours, subject to minimum order quantities and lead times, to match the mortar or outer leaf. The most popular colours are white and sandstone. Our technical department will be happy to assist you with product specifications.
Visqueen Building Products commissioned Ceram Building Technology to test Visqueen Zedex CPT DPC under BSI’s DD86 Part 1 1983 for flexural bond strength and shear strength. These independent tests show that Visqueen Zedex CPT DPC has excellent mortar adhesion characteristics. With DPCs being used extensively outside the original ground level applications, understanding the effect of a damp proof course on wall strength becomes increasingly important.
Visqueen Zedex CPT DPC avoids the risks of any incompatibility between the damp proof course and other damp or waterproofing materials. It can be used with a wide range of products such as silicon mastics without causing discolouration, and bituminous liquid DPMs. Such compatibility is essential to ensure a continuous waterproof barrier for the lifetime of the building. Clean and safe to handle, the materials used in Visqueen Zedex CPT DPC are chemically stable and inert, free of both solvents and aggressive chemicals. Visqueen Zedex CPT DPC is also clean and safe to use, requiring no special conditions for storage, transportation, handling, usage or recycling.
- Fully recyclable.
- Strong and flexible.
- Robust and puncture resistant.
- High tear strength.
- Excellent workability in winter conditions.
- Zedex CPT DPC must extend through the full thickness of the wall, including pointing, applied rendering or other facing materials.
- Zedex CPT DPC must be laid on an even bed of wet mortar, and perforations in adjacent courses of brickwork must be completely filled with mortar.
- Zedex CPT DPC must not be damaged by cavity cleaning after installation.
- Further information is available from BBA Certificate (94/3059), available from our website visqueenbuilding.co.uk
All DPC laps must be a minimum of 100mm and bonded together with Visqueen Zedex DPC Jointing Tape. All cavity tray laps to Preformed Cavity Tray (Cloak) Units must be a minimum of 100mm and bonded using Visqueen Zedex DPC Jointing Tape. Visqueen Zedex DPC Joint Support Boards are also available to support the formation and long term integrity of these joints.
Visqueen Zedex DPC Fixing Strip should be used when the construction programme or the design requires the DPC to be post or surface fixed to the cavity face of the inner leaf. The surface should first be primed; the DPC then bonded to the inner leaf using Visqueen Zedex DPC Jointing Tape and finally permanently secured using Visqueen Zedex DPC Fixing Pins at 150mm intervals. Visqueen Zedex DPC Fixing Pins for Masonry can be used for surface fixing to solid substrates such as blockwork or concrete whereas the rigid urethane foam insulation of composite inner leafs require Visqueen Zedex DPC Fixing Pins for Insulation
Technical Data and CE Mark
Zedex CPT Damp Proof Course complies with the requirements and clauses of EN 14909 – Flexible sheets for waterproofing – Plastic and rubber damp proof courses – Definitions and characteristics. Zedex CPT DPC products are manufactured under a Quality Management System (IS0 9001) – Certificate of Compliance reference no. 4560-3 by Knight International applies.