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​​​​​​​​​​​​​​​​​​​​Preprufe® - For ContractorsRequest a​ Free​ ​Project Appra​isal​​​

All projects are unique. Project complexity, size, site, location, climate, timeline and budget are considerations when choosing a waterproofing system that will add value and success to your project.

GCP's Preprufe® waterproofing system with Advanced Bond Technology™ is designed to offer significant value that saves costs and time and provides with peace of mind for projects both large small:

  • ​Proven waterproofing performance for underground slabs and blind side applications with complex details in climates worldwide
  • Safe, easy and fast installation with minimal labour in confined space without the use of heat, power, special equipment or special tools
  • Onsite technical support and best-in-class customer service from the earliest stages of your project through completion


Installed with GCP's unique Advanced Bond Technology™, the Preprufe® waterproofing membrane aggressively bonds directly to poured concrete forming an impermeable seal between the membrane and structure. Unlike other systems that require mechanically attaching a mesh or fleece interface between the membrane and concrete, Advanced Bond Technology™ does not risk water migration via capillary action and saves material costs and installation time.

Preprufe® Plus waterproofing membrane, with unique ZipLap™ technology, is GCP's newest below ground waterproofing system offering watertight protection in the harshest climates and most challenging site conditions. Robust adhesive Ziplap™ layers aggressively protect seams from more than 70m water pressure*. The wide kick-out roll is liner free reducing storage and waste costs. The patented surface coating is non-absorbent, highly resistant to contaminants, dirt and UV exposure for up to 8 weeks. This new waterproofing system from GCP is immediately trafficable after application allowing rebar to be installed the same day to keep your project moving.

*ASTM D5385-modified test​​



Adcor® 500T® 500TA malleable, swellable polymer/butyl rubber waterstop strip that expands in contact with saline and brackish water.
Adcor® 550MI® 550MIAdcor® 550MI is a unique passive and active waterstop system designed for the secure sealing of concrete construction
Adcor® 550T-MI® 550T-MIPre-applied post-injectable hydrophilic waterstop for saline and brackish water ground condition. Adcor® 550 T-MI is a
Adcor® SAS® SASAdcor® SAS 500S is an hydro-expansive waterstop that provides a continuous bond to substrates, preventing water entry through joints in concrete sub-structures.
Bituthene® LM® LMBituthene® LM is designed to complement GCP sheet systems where liquid applied waterproofing is necessary to ensure watertight continuity
Hydroduct® 200® 200Hydroduct 200 Drainage Composite consists of a nominal 10 mm (0.375 in.) thick drainage core and a high performance
Hydroduct® 220® 220Hydroduct 220 Drainage Composite consists of a 10 mm (0.375 in.) thick drainage core, a high performance geotextile and
Hydroduct® 401® 401Hydroduct® 401 and 501 are composite drainage sheets for all types of green roofs and are recommended for use, in
Hydroduct® 501® 501Hydroduct® 401 and 501 are composite drainage sheets for all types of green roofs and are recommended for use, in
Hydroduct® 650® 650Hydroduct 660 Drainage Composite consists of a nominal 10 mm (0.375 in.) thick drainage core and high performance geotextile
Hydroduct® Coil® CoilHydroduct Coil is installed at the bottom of the basement walls and linked to the Hydroduct sheet and ensures water is drained away from the basement structure.
Preprufe® 160RPlus/300R Plus® 160RPlus/300R PlusPreprufe® 160 Flex waterproof membrane is a composite sheet comprising of a robust flexible backing, a pressure
Preprufe® 800 PA® 800 PAPreprufe® 800PA is a cold-applied, self-adhesive waterproofing membrane, composed of a reinforced cross laminated HDPE
Protection 03 03Robust bitumen protection boards for protecting GCP waterproof membranes from damage during construction activity
Silcor® 900HA® 900HAFast-cure, hand-applied liquid waterproofing membrane for decks, terraces, walkways, roofs. Silcor® 900HA is two
Silcor® 900MP® 900MPRapid-set, spray-applied, liquid waterproofing membrane for decks, terraces, walkways, roofs. Silcor 900MP is a premium