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• Approvals and Standards
• Storage and Handling
• Preparation
• Installation
• Usable Temperature Range
• Additional Information

Approvals and Standards

• Quality Management System ISO 9001:2015
• Occupational Health and Safety System ISO 18001:2007
• Environmental Management System ISO 14001:2015

Storage and Handling

Visqueen Zedex Mastic should be stored vertically, under cover in its original packaging. Store away from any sources of ignition in a well ventilated space at temperatures between 5ºC and 30ºC.

The unopened product has a minimum shelf life of 12 months.

Care should be taken when handling the product in line with current manual handling regulations.

Use in a well ventilated space away from any sources of ignition.

Preparation

Visqueen Zedex Mastic is applied using a mastic skeleton gun.

Ensure surfaces to which the mastic are to be applied are clean, dry, free from frost, grease or loose materials.

Cut off the tip of the cartridge above the screw thread. Trim the nozzle approximately 25 mm from the tip of the nozzle. Screw the nozzle onto the cartridge and insert the cartridge into the mastic skeleton gun. When applying, ensure good contact with the surface.

Installation should be completed before the mastic has begun to skin over (approximately 30 minutes depending on ambient conditions).

Prior to cavity tray lap joint formation, ensure that the joint is fully supported e.g. using a Visqueen DPC Joint Support or sealing the cavity tray onto the Preformed Unit.

Installation

The following relates to a cavity tray lap joint formation i.e. Visqueen Zedex Non-Combustible Damp Proof Course sealed to itself or onto Visqueen Non-Combustible Preformed Units.

All laps to be 100mm. Apply Visqueen Zedex Mastic onto the DPC or Preformed Unit lap area e.g three vertical beads. Position the adjacent overlaying DPC and using a seam roller, apply pressure to the DPC to compress the mastic and form a 100mm wide seal.

Apply the mastic against and over the exposed lap edge so as to encapsulate the lap edge.

The following relates to a cavity tray surfaced fixed joint formation i.e. sealing Visqueen Zedex Non-Combustible Damp Proof Course or Visqueen Non-Combustible Preformed Units to the inner leaf.

Under normal conditions the DPC can be held against the inner leaf substrate with a single bead of Visqueen Zedex Mastic and then secured with Visqueen Non-Combustible Fixing Strip and stainless steel fixings suitable for the substrate.

Apply a horizontal bead of Visqueen Zedex Mastic centrally to the 100mm inner leaf substrate lap area. Position the DPC and press the DPC firmly onto the substrate. Using a seam roller, apply pressure to the DPC to compress the mastic and form a minimum 30mm wide seal.

Complete the joint formation by securing the upper edge of the DPC with Visqueen Non-Combustible Fixing Strip set approximately 5mm below the upper edge of the DPC. The fixing strip should be secured with stainless steel fixings suitable for the substrate.

Usable Temperature Range

It is recommended that Visqueen Zedex Mastic and associated system components should not be installed below 5°C.

Additional Information

For further information, contact Rawlins Technical on 0113 2455450 (option 2) or send a message to [email protected].