DPM Tape - Visqueen Double Sided Jointing Tape

Features and benefits

• Third party certifcation - part of a dpm/ gas protection BBA approved jointing system
• Gas resistant - provides excellent resistance to harmful bulk gases ingress and moisture ingress
• Excellent adhesion - to gas and damp proof membranes

Product description

VisqueenPro Double Sided Jointing Tape is a double sided butyl based compound with an oversize quick release flm. It is available in roll format 50mm x 10m. 

To complete the joint use the Visqueen Gas Resistant Foil Tape for gas applications and use the Visqueen Pro Single Sided Tape for damp applications.

Approvals and standards

• Third party accreditation - BBA certifcation
• Conforms to the specifcation requirements of BS 8485:2015 + A1:2019
• Quality Management System ISO 9001:2015
• Occupational Health and Safety System ISO 18001:2007
• Environmental Management System ISO 14001:2015

Usage

VisqueenPro Double Sided Jointing Tape is used to bond membranes (gas or damp) together along the appropriate sheet lap ends. It can also be used for patch work where the membrane is punctured, creating airtight seals around pipe penetrations and bonding the foor membrane to the damp proof course at the horizontal plane.

To complete the joint use the Visqueen Gas Resistant Foil Tape for gas applications or use the Visqueen Pro Single Sided Tape for damp proof membranes.

Storage and handling

Store in warm, dry, and clean environment in its current packaging. The tape should not be exposed to long periods of ultraviolet light. In very cold weather, prior to use ensure that the material is stored in warm conditions above 5°C.

Preparation

Ensure all surfaces are clean and dry. The membrane joint surfaces should be dry and free from contamination such as dust or sand. Ensure the surface and working area is not waterlogged. Avoid areas of unsupported jointing.

Installation

Apply VisqueenPro Double Sided Jointing Tape to the lap area of the laid sheet starting approximately 50mm from the membrane edge. Apply pressure to the tape to ensure the tape has adhered to the membrane. Remove quick release paper from the tape and overlap the adjoining membrane by minimum 150mm. For Visqueen damp proof membranes and gas protection membranes lap joints should then be sealed using the appropriate Visqueen lap tape. Once the tape is applied, the completed lap should be well rolled with frm pressure to ensure a complete seal joint has occurred, and continuity with the adjacent sheet has been achieved.

If the membrane is punctured or perforated a patch of the same material should be lapped at least 150mm beyond the limits of the puncture and bonded with VisqueenPro Double Sided Jointing Tape and sealed with the appropriate lap tape.

Airtight seals should be formed around all service entry points. Visqueen Preformed Top Hat Units should be used for sealing service entry pipes. The base of the top hat and the upstand should be bonded using Visqueen Pro Double Sided Jointing Tape and sealed with Visqueen Foil Lap Tape. The upstand should be secured with the supplied jubilee clip.

Usable temperature range

It is recommended that VisqueenPro Double Sided Jointing Tape and other system components should be used above 5°C