Description:

Preprufe Plus waterproof membranes are composite sheets comprising a robust virgin HDPE backing, a pressure sensitive adhesive and a trafficable weather resistant coating with dual adhesive Preprufe ZipLap™ for increased security and practicability at overlap.

GCP has combined its proven Advanced Bond Technology™ – together with more than 25 years of major project experience to produce its highest performing waterproofing membrane with even more practical and economic benefits.

Advanced Bond Technology™ – The membranes develop a continuous adhesive bond to concrete poured on or against it, preventing water migration between the structure and the membrane, significantly improving protection against leaks.

Installation benefits – Preprufe Plus membrane is simple, fast and secure. Ancillary products are limited to a single tape and Bituthene Liquid Membrane for detailing. The full application can be executed by only two operators, saving labour cost and time. Unique Preprufe ZipLap™ allow instant lap forming even in adverse conditions.

Uses:

• Water and vapour proofing for all basement grades to BS8102:2009
• Waterproofing civil engineering sub – structures
• Gas resistance – methane, carbon dioxide and radon gas protection according to BS 8485 (see section
  7.2.4), BRE Reports 211 (radon) and 212 (methane and carbon dioxide). 
• Independent test results available upon request.
• Protection of reinforced concrete structures in aggressive ground including the harshest conditions of he Arabian Peninsula.

Advantages:

• Fast, Simple and Secure – engineered for efficient jobsite application and long term waterproofing erformance.
• Advanced Bond Technology™ reduces risk – develops an intimate and continuous adhesive bond to oncrete proven to resist water migration at the highest pressures.
• Preprufe ZipLap dual adhesive watertight laps – easy to execute year round even in harsh conditions; aps stay clean and dry until the seal is made.
• Gas resistance – Preprufe 300R Plus LT is certified by BBA to score 2 points as a gas resistant barrier see BS 8485:2015, Table 7) and additional 2.5 points as a structural barrier in Grade 3 basements (BS
  8485:2015, Table 5).
• Reduces cost and saves time – fast installation, only 2 operator crew.
• No hidden extras – no primers, sealants, fillets or specialist equipment.
• Extended exposure time – unique UV barrier coating allows exposure up to 56 days prior to concreting, for programme flexibility or delays.
• Lightweight, easier handling – reduced storage area and better safety vs thicker, heavier, bulky technologies.
• Simple system – membrane and only single tape to install the waterproofing system.
• Easy detailing – flexible membrane in use but keeps its shape and conforms to corners and other construction details.
• Smooth, non-absorbent surface – unlike geotextile faced membranes, resists site contamination and easily cleaned before concreting to ensure intimate bonding.
• No compartments – integral adhesive bond eliminates the need for complex welded compartments used with unbonded membranes.
• Cold applied, single layer – no hot works, double layers or protection screed.
• Tough HDPE waterproof geomembrane – durable, tough, chemical and gas resistant. Also isolates structure from salts and sulfate attack.
• 25 Year Track Record – Preprufe membranes have been used on major projects around the world for more than 25 years.
• Passive waterproofing – unlike bentonite based systems, does not rely on activation, is unaffected by groundwater contaminants, rain or wet/dry cycling during site and building life.
• Total GCP system – full range of GCP hydrophilic and PVC waterstops available for concrete joint protection including wide movement joints (seismic area).
• Can be used in combination with GCP postapplied self-adhesive membrane range.