External Membranes and Drainage

Pre-formed External Waterproofing Membranes Explore our range of pre-formed external waterproofing and drainage membranes, including Newton’s leading self-healing Type A membrane HydroBond 403 Plus. These solutions are tailored for external applications, offering effective waterproofing for earth-retained structures and covered decks.

Understanding External Waterproofing Membranes External waterproofing membranes encompass a variety of liquid-applied and sheet membranes suitable for either post- or pre-application on the exterior surfaces of below-ground or earth-retaining structures.

These membranes fall under the 'Type A' waterproofing classification according to British Standard 8102:2022, engineered to withstand hydrostatic pressure and prevent water intrusion into the structure's interior.

Newton offers a diverse range of external waterproofing membrane options, including their flagship HydroBond 403 Plus self-healing sheet membrane.

Newton HydroBond 403 Plus – Advantages and Uses Newton HydroBond 403 Plus stands out as a high-performance self-healing membrane, establishing a robust mechanical bond with structural concrete while forming a waterproof barrier around the structure. Its gas barrier variant also shields against radon gas, carbon dioxide, and various hydrocarbons.

Often integrated with other Newton products, HydroBond 403 Plus contributes to a comprehensive structural waterproofing solution. As a continuous external Type A membrane, it is applied prior to concrete placement on raft and wall formwork.

Newton Drainage Membranes Drainage membranes play a crucial role in safeguarding external waterproofing membranes and structures against water pressure, ground chemicals, and damage during backfilling.

Products like HydroBond 410 GeoDrain feature a geotextile filter layer thermally welded to an HDPE drainage membrane. This integrated drainage system alleviates water pressure on structures, offers protection against harmful groundwater chemicals, and filters out suspended soil particles that could obstruct the membrane's functionality.