Structural, Foundation and Below Grade Waterproofing Membranes
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Structural and Foundation ​​​​​​​​​​​​​​​​Waterproofing 

PrePrufe Installation
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Preprufe® Plus: Next Generation Pre-Applied Waterproofing Solution​

Click here to learn more about Preprufe® and download technical documents.
GCP Applied Technologies' robust waterproofing product offerings provide reliable solutions for all waterproofing designs and conditions, above and below grade. We invented the self-adhered waterproofing membranes more than 50 years ago and have been the leader in this category ever since.

Structural and foundation waterproofing, including above- and below-grade waterproofing, is a critically important component of any commercial building structure. Depending on its application, below-grade waterproofing could be pre-applied or post-applied. 

Post-applied waterproofing membranes are applied after the installation of the concrete walls p​re-applied waterproofing is applied before the foundation is poured. These membranes may be used in wet environments or under wet conditions to a certain depth in o​rder to promote soil stabilization and to provide foundation waterproofing. 

​A pre-applied application must adhere to a strict set of installation guidelines; once the membrane has been installed, repair or maintenance is very difficult. Post-applied below grade waterproofing needs to be well-adhered and sealed to the structure, providing flexibility to accommodate structural movements. Above grade waterproofing installation can be an arduous task due to curves, corners, complex shapes and geometries, requiring a reliable waterproofing membrane.

GCP offers advanced waterproofing membranes and technologies for virtually all above- and below-grade commercial applications. Our brands, Bituthene®, Preprufe®, Procor®, Hydroduct®, and Adcor®, include self-adhesive sheet-applied and fluid-applied waterproofing membranes, drainage composites and waterstops. GCP has expanded its portfolio with the addition of De Neef, offering preventative and remedial waterproofing, concrete protection and repair products.

Our innovations in structural waterproofing can be found in signature buildings and projects around the world, protecting their integrity for more than 50 years.​

​Gcp-branded documents

The familiar Gcp brand will continue to appear on GCP documents until we complete our rebranding.  Until then, Gcp-branded documents are accurate representations of GCP Applied Technologies products.



Adcor® ES® ESA conformable, engineered waterstop which expands when in contact with water. Intended for use in vertical and horizontal construction joints.
Bituthene® 3000 & Low Temperature® 3000 & Low TemperatureSelf-adhesive, cold-applied waterproofing membranes ideal for above and below grade concrete, masonry and wood surfaces.
Bituthene® 4000 System® 4000 SystemThe Bituthene 4000 System is a high performance, self-adhesive, super tacky waterproofing membrane intended for use with Bituthene Surface Conditioner above 25⁰F.
Bituthene® Adhesive Primer B2 LVC® Adhesive Primer B2 LVCA specially formulated low VOC primer for use with Bituthene® membranes and GCP underlayments on green concrete or damp surfaces.
Bituthene® Deck System® Deck SystemA robust, primer-less, waterproofing system for concrete decks and critical horizontal applications.
Bituthene® Edgeguard Tape® Edgeguard TapeA specially formulated tape designed for use in waterproofing applications where resistance to hydrocarbon contaminated soil is required.
Bituthene® Liquid Membrane® Liquid MembraneA two component, cold-applied, trowel grade material designed for detailing Preprufe®, Bituthene® and Perm-A-Barrier® products.
Bituthene® Mastic® MasticA rubberized asphalt-based mastic with multi-surface adhesion. Designed to seal terminations, edges of patches, and overlaps in detail areas.
Bituthene® Primer WP-3000® Primer WP-3000A water-based latex primer specially formulated to bind dust and reduce concrete efflorescence. Designed for use above 40⁰F with Bituthene waterproofing membranes and GCP underlayments.
DeNeef SWELLSEAL® #8 SWELLSEAL® #8A hydrophilic waterstop strip for the sealing of joints in underground pre-cast elements and various construction joints.
DeNeef SWELLSEAL® 2010 SWELLSEAL® 2010A waterstop strip for sealing construction joints in underground pre-cast elements and cold joints.
DeNeef SWELLSEAL® Joint SWELLSEAL® JointA hydrophilic, expansive rubber strip specially engineered with internal pressure compensating features for the sealing of construction joints.
DeNeef SWELLSEAL® WA SWELLSEAL® WAA single component hydrophilic, waterstop designed for irregular construction joints and use in conjunction with other DeNeef waterstops.
Florprufe® 120® 120Florprufe ® 120 is the industry's first integrally bonded vapor barrier. This highly durable membrane provides best-in-class, permanent water vapor protection.
Hydroduct® 200® 200A robust drainage mat consisting of a thick drainage core and high performance geotextile. Designed for use with Preprufe® membranes.
Hydroduct® 220® 220A robust drainage mat consisting of a thick drainage core and high performance geotextile. Designed for use with the full range of GCP waterproofing systems.
Hydroduct® 225® 225A robust drainage mat specially designed for heat and hydrocarbon resistance. Ideal for use under asphalt or in contaminated environments.
Hydroduct® 660® 660A robust drainage mat intended for use in horizontal applications with a high compressive strength and flow rate. Compatible with all GCP waterproofing membranes.
Hydroduct® Coil 600® Coil 600Perimeter drain designed to replace traditional perforated pipe and aggregate perimeter drain systems. Compatible with Hydroduct products.
INJECTO®®An injectable waterstop solution that provides a conduit for the placement of De Neef chemical grouts in critical construction joints.