Polythene Jointing Tapes | Waterproof sealing | UK Tapes
Polythene Jointing Tapes - an overview
Polythene jointing tapes are specialised adhesive products designed to create durable and waterproof seals between sheets of polythene membranes or damp proof courses (DPC) in construction. These tapes are essential in preventing the ingress of moisture and gas from the ground, ensuring the integrity of a structure's Damp Proof Membrane (DPM) system. They provide a quick, clean, and reliable alternative to traditional methods of joining, such as heat welding, making them a cornerstone of modern ground-level moisture protection. The tapes themselves are typically made from either a PVC or polythene carrier, coated with a high-performance adhesive, often butyl rubber, known for its exceptional tack and moisture resistance.
Single-Sided vs. Double-Sided Applications
Polythene jointing tapes are primarily offered in two formats to suit different installation needs. Single-sided tapes are used to seal overlaps where two membrane sheets meet, or to patch small tears or penetrations. They effectively cover and bond the top layer of the membrane to the bottom, creating a continuous waterproof barrier. In contrast, double-sided tapes are placed between the overlapping membrane sheets, providing a continuous line of adhesive on both sides. When the membranes are pressed together, this creates an immediate and highly aggressive internal seal. Double-sided tapes are particularly useful for critical joints that require maximum sealing integrity before being covered by subsequent construction layers, offering superior bonding strength, especially when a highly aggressive adhesive like butyl rubber is used.
Key Features and Proven Reliability
The performance of these tapes relies on several critical features: water resistance to withstand ground moisture, high tack (aggressiveness of the adhesive) to ensure instant and permanent bonding, and flexibility to accommodate minor structural movements without cracking or delaminating. Given their role in protecting the fabric of a building, reliability is paramount. Many suppliers, like UK Tapes Ltd, have been supplying high-quality polythene jointing tapes for decades, a testament to their proven performance. This established history in the construction industry means engineers and builders can depend on these tapes to maintain a continuous, airtight, and waterproof barrier against rising damp, ensuring compliance with building regulations and the longevity of the structure
UK TAPES' Polythene Jointing Tape range includes:
SINGLE-SIDED POLYTHENE JOINTING TAPE
The UKT109BLK75 is a single-sided, waterproof, and high-tack polythene jointing tape designed for permanently sealing polythene sheeting and damp proof courses (DPC). This self-adhesive PVC joining tape is essential for creating a robust, waterproof join when installing DPM damp proof membranes. Trusted by professionals, UK Tapes Ltd has been supplying reliable polythene jointing tapes since 1996, giving this product a proven record of reliability in construction and civil engineering applications.
DOUBLE-SIDED POLYTHENE JOINTING TAPE
Use the UKT87DPM50 double-sided jointing and sealing tape for an unparalleled bond when working with construction membranes. Featuring a very high-tack butyl rubber adhesive, this tape is waterproof and specifically formulated to seamlessly join and seal polythene sheeting and damp proof courses (DPC). It is the ideal solution for creating a secure, waterproof join for DPM damp proof membranes. Backed by our long history—UK Tapes Ltd has supplied high-quality polythene jointing tapes since 1996—you can depend on the proven reliability of this double-sided sealing solution.
