PREPRUFE® Pre-Applied Waterproofing Solutions

High-performance, fully adhered, pre-applied waterproofing system for critical below-grade applications.

Challenges of below-grade waterproofing

PREPRUFE® utilizes GCP's Advanced Bond Technology to create a continuous, integral and permanent adhesive bond to concrete. Leaks from groundwater, storm water runoff or irrigation water may impact the foundation of any building that's improperly waterproofed — and when concrete is involved, there any number of ways that water can travel into and around a structure.

  • Water can come up through the seams of a poorly designed or improperly installed waterproofing membrane
  • Job site conditions such as dust can spoil the adhesion of a membrane to concrete and prevent a system from performing as designed
  • Imperfections, voids and cracks in concrete can create a pathway for water to migrate in and around a structure.

To manage the risks outlined above and meet the challenges of below-grade construction, a robust, high-performing and easily installed waterproofing system is required.

650
million square feet installed worldwide
25+
year track record
75
countries supplied
0
water tracking
Overview

Protect your structure with a proven waterproofing membrane

Comprised of a robust HDPE film, pressure-sensitive adhesive and protective coating, PREPRUFE® forms a robust, permanent and aggressive adhesive bond with any concrete slab. PREPRUFE® products are specifically designed to perform in critical applications and incorporate Advanced Bond Technology™ to ensure fully adhered and long-lasting product performance. This technology allows PREPRUFE® to form a continuous unbroken seal with the concrete for the design life of the project.

A proven, reliable waterproofing solution for critical applications

PREPRUFE® waterproofing Advanced Bond Technology™ creates a continuous, integral and permanent adhesive bond to concrete. This seal prevents the lateral migration of water into and around the structure and provides performance for the lifetime of the structure. In the case of a breach or installation error, this fully bonded membrane ensures that water under hydrostatic pressure is unable to migrate between the membrane and concrete, therefore limiting the risk of catastrophic waterproofing failure. Independent testing and a 25+ year track record has proven that PREPRUFE® can resist lateral water migration at extremely high pressure — 70+ meters of hydrostatic head pressure. For this reason, PREPRUFE® systems are globally proven in the world's most critical applications.

Contractor friendly, straightforward installation to ensure performance and accelerate project schedules

Many systems in the market today require the use of welding or mechanically fastened laps. These installation requirements require a skilled installer, introduce risk to the installation and take time, effort, and expertise. These methods require a large crew and specialized equipment in addition to creating the potential for dangerous and unpleasant site conditions such as odor. In addition to the logistical challenges, these processes tend to be finicky— common jobsite challenges such as dust and moisture can easily result in incorrectly completed laps and details, both of which may result in expensive and costly long-term consequences.

By contrast, PREPRUFE® PLUS can be applied with a minimal crew and requires no special equipment for installation. Installation is simple: a "kick-out" design allows workers to unroll a sheet in seconds. A dual adhesive ZipLap™ seam allows sheets to bond to one another easily, and is designed to resist common nuisance conditions onsite - dust, debris and moisture.

World-quality waterproofing

With applications on mega projects such as the Alaskan Viaduct, the largest bored tunnel on Earth, PREPRUFE® has been proven the world over in critical applications. Over the last 25 years, builders have installed more than 650 million square feet of PREPRUFE® in below-grade applications—there’s hardly a more trusted brand in waterproofing. For more information on how PREPRUFE® can benefit your project, contact GCP today.

"Question on a project? Design Advantage experts provide technical consultation throughout project design and construction. We'll work closely with your team to get everybody on the same page, from specification to installation."

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Product Listing
  • Product
  • Description
  • Key Benefits
  • Applications Type
PREPRUFE® 200
Description

PREPRUFE® 200 is a composite sheet membrane comprised of a robust HDPE film, an aggressive pressure-sensitive adhesive and a weather resistant coating. Using patented Advanced Bond Technology, PREPRUFE® 200 Membrane provides a continuous seal that resists water ingress and migration between the membrane and the structure.

Key Benefits
  • Prevents water migration
  • Fast and easy installation
  • Avoids delays
  • Excellent vapor barrier
Application Type
  • It can be applied either horizontally to smooth prepared concrete, well-rolled and compacted sand or compacted crushed stone blinding; or vertically to permanent formwork or adjoining structures.
PREPRUFE® 300R & 160R
Description

PREPRUFE® 300R & 160R membranes are unique composite sheets comprised of a thick HDPE film, pressure sensitive adhesive and weather resistant protective coating. Designed with Advanced Bond Technology™, PREPRUFE® 300R & 160R membranes form a unique, integral bond to poured concrete, preventing both the ingress and lateral migration of water while providing a robust barrier to water, moisture and gas.

Key Benefits
  • Forms a unique continuous adhesive bond to concrete poured against it
  • Fully-adhered watertight laps and detailing
  • Provides a barrier to water, moisture and gas
  • Zero permeance to moisture
Application Type
  • Applied either horizontally to smooth prepared concrete, carton forms or well rolled and compacted earth or crushed stone substrate;
  • Applied vertically to permanent formwork or adjoining structures
PREPRUFE® 300R Plus & 160R Plus
Description

PREPRUFE® 300R Plus & 160R Plus membranes are unique composite sheets comprised of a thick HDPE film, pressure sensitive adhesive and weather resistant protective coating. Designed with Advanced Bond Technology™ and a dual adhesive ZipLap™, PREPRUFE® Plus membranes form a unique, integral bond to poured concrete, preventing both the ingress and lateral migration of water while providing a robust barrier to water, moisture and gas.

Key Benefits
  • Forms a unique continuous adhesive bond 
  • Provides a barrier to water, moisture and gas
  • Easy roll/kick out installation
  • Release liner free
Application Type
  • Applied horizontally to smooth prepared concrete, carton forms or well rolled and compacted earth or crushed stone substrate
  • Applied vertically to permanent formwork or adjoining structures
PREPRUFE® 400T
Description

PREPRUFE® 400T membrane is a unique composite sheet comprised of a thick polyethylene film, an aggressive pressure sensitive adhesive and a protective coating.

Key Benefits
  • Fully-adhered technology
  • Micro-compartmentalized system
  • Solutions for all tunnel types
Application Type
PREPRUFE® Detail Tape
Description

PREPRUFE® Detail Tape is a specially formulated, two-sided, highly aggressive tape. It is a 2 in (50 mm) wide x 50 ft (15 m) long self-adhesive tape with a release liner.

Key Benefits
Application Type
  • Detailing accessory to the PREPRUFE® and PREPRUFE® SCS Systems
  • Adhering HYDRODUCT® drainage composites and insulation boards to waterproofing membranes
PREPRUFE® FLEX
Description

PREPRUFE® FLEX is a composite sheet comprised of robust highly flexible backing, an aggressive pressure sensitive adhesive and a weather resistant protective coating using GCP's unique Advanced Bond Technology.

Key Benefits
  • Prevents lateral water migration
  • Fast and easy installation
  • Excellent gas and vapor barrier
  • Inherently waterproof, non-reactive system
  • Self protecting
Application Type
  • Intended for intermittent water conditions
  • Applications include construction such as garages, plant rooms and utility grade basements
PREPRUFE® GMS (Gas Mitigation System)
Description

PREPRUFE® GMS membrane is a unique composite sheet comprising a thick HDPE film, an aggressive pressure sensitive adhesive and a weather resistant protective coating.

Key Benefits
  • Fully-adhered watertight laps and detailing
  • Zero permeance to moisture
  • Solar reflective
  • Simple and quick to install
Application Type
  • Specially designed to prevent methane and other hazardous gas vapors from entering the building through the foundation slab or other part of the structure
PREPRUFE® Grout CEM 100
Description

PREPRUFE® Grout CEM 100 is a high strength, cementitious, non-shrink grout for re-profiling of pile heads prior to the application of PREPRUFE® Grout EG 75 or for concrete substrate repairs. When used with PREPRUFE® Grout EG 75, continuity of PREPRUFE® waterproofing systems at pile heads and similar structural penetrations is achieved. 

Key Benefits
  • Compatible with PREPRUFE® Grout EG 75
  • Low permeability
  • Shrinkage compensated (non-shrink)
  • High bond to concrete substrates
  • Rapid strength gain
Application Type
  • Re-profiling of pile heads before the application of PREPRUFE® Grout EG 75
  • Re-profiling of structural penetrations through PREPRUFE® sheet waterproofing systems before the application of PREPRUFE® Grout EG 75
PREPRUFE® Grout EG 75
Description

PREPRUFE® Grout EG 75 is a high performance, solvent free, impermeable epoxy grout for maintaining continuity of PREPRUFE® waterproofing systems at pile heads and similar structural penetrations. 

Key Benefits
  • Water resistant adhesion
  • Impermeable
  • High bond to substrate
  • Rapid strength gain
Application Type
  • Waterproofing of pileheads and pilecaps
  • Waterproofing of structural penetrations through PREPRUFE® waterproofing systems
  • Recommended thickness range 1/2" (13mm) - 3" (75 mm)
PREPRUFE® Hydrophilic Sealant
Description

PREPRUFE® Hydrophilic Sealant is a caulk-applied hydro-swelling sealant designed as a water stop for use around penetrations and in both horizontal and vertical construction joints.

Key Benefits
  • Solvent free
  • >200% expansion
  • Strong adhesion
  • Ease of application
Application Type
  • As a water stop around pipe penetrations, rebar, utility conduits and other penetrations
  • Horizontal and vertical construction joints in concrete surfaces
  • As a detailing accessory to the PREPRUFE® Waterproofing System
PREPRUFE® Low Temperature Membranes
Description

PREPRUFE® Low Temperature (LT) Membranes (300LT and 160LT) are unique composite sheets comprising a thick HDPE film, an aggressive pressure sensitive adhesive formulated for application temperatures down to 25°F (-4°C), and a weather resistant protective coating.

Key Benefits
  • Fully-bonded to concrete
  • Barrier to water, moisture and gas
  • Low temperature application
  • Immediately trafficable
Application Type
  • Applied horizontally to smooth prepared concrete, carton forms or well rolled and compacted sand or crushed stone substrates
  • Applied vertically to permanent formwork or adjoining structures
PREPRUFE® Plus Low Temperature Membranes
Description

PREPRUFE® 300R Plus LT & 160R Plus LT membranes are unique composite sheets comprised of a thick HDPE film, a pressure sensitive adhesive designed for installation between 25°F (-4°C) and 60°F (16°C) and weather resistant protective coating. 

Key Benefits
  • Fully-bonded to concrete
  • Fully-adhered adhesive to adhesive watertight lap barrier to water, moisture and gas
  • Easy roll/kick out installation
Application Type
  • Applied horizontally to smooth prepared concrete, carton forms or well rolled and compacted earth or crushed stone substrate
  • Applied vertically to permanent formwork or adjoining structures
PREPRUFE® SCS
Description

PREPRUFE® SCS is a unique blindside waterproofing system specifically developed to provide a high performance waterproofing solution for shotcrete foundation walls.

Key Benefits
  • Post-injected grout fills and seals, providing ultimate waterproofing protection
  • Aggressive bond to shotcrete resists lateral water migration
  • Excellent resistance to hydrostatic pressure
Application Type
  • Applied vertically to timber lagging or other soil retention systems
PREPRUFE® Tape and PREPRUFE® CJ Tape
Description

PREPRUFE® Tape and PREPRUFE® CJ Tape are specially formulated two sided, reinforced pressure-sensitive tapes. These tapes are constructed with a highly aggressive adhesive which is designed to adhere to penetrations, protrusions and GCP waterproofing membranes.

Key Benefits
  • Highly aggressive pressure sensitive adhesive
  • Weather resistant protective coating
  • Form a continuous and integral seal to the structure
Application Type
  • Used in detail areas including end laps, penetrations and various tie-ins
  • Used to patch damaged areas in the PREPRUFE® membranes
  • Used at construction joints in concrete
PREPRUFE® Tieback Cover
Description

The PREPRUFE® Tieback Cover is a specially designed, two-part cover used to maintain waterproofing integrity at soil retention tieback heads. 

Key Benefits
  • Prevents water migration
  • Fully-adhered watertight laps using PREPRUFE® Tape
  • Simple and quick to install
  • Easy to inspect
Application Type
  • Installed over cable and rod type tieback heads 
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