United Kingdom – English Waterproofing
Sign In

Construction Products

Quick Links
​​​​​​​​​​​​​​​​​​BIM Waterproofing 


PrePrufe Installation
Preprufe Logo           

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 offering provides reliable solutions for all waterproofing designs and conditions. GCP (formerly W.R. Grace) invented the self-adhered waterproofing membranes more than 50 years ago and has 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 can be pre-applied or post-applied. Post-applied waterproofing membranes are applied after the installation of the concrete walls. Pre-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 order 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®, Silcor®, 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.​​



Hydroduct® 401https://gcpat.com/construction/en-gb/waterproofing/Hydroduct-401Hydroduct® 401Hydroduct® 401 and 501 are composite drainage sheets for all types of green roofs and are recommended for use, in
Hydroduct® 501https://gcpat.com/construction/en-gb/waterproofing/Hydroduct-501Hydroduct® 501Hydroduct® 401 and 501 are composite drainage sheets for all types of green roofs and are recommended for use, in
Hydroduct® 650https://gcpat.com/construction/en-gb/waterproofing/Hydroduct-650Hydroduct® 650Hydroduct 660 Drainage Composite consists of a nominal 10 mm (0.375 in.) thick drainage core and high performance geotextile
Hydroduct® CF 08https://gcpat.com/construction/en-gb/waterproofing/Hydroduct-CF-08Hydroduct® CF 08Hydroduct CF is a robust dimpled HDPE drained cavity former in two sizes that provides a highly efficient and
Hydroduct® CF 20https://gcpat.com/construction/en-gb/waterproofing/Hydroduct-CF-20Hydroduct® CF 20Hydroduct CF is a robust dimpled HDPE drained cavity former in two sizes that provides a highly efficient and
Hydroduct® Coilhttps://gcpat.com/construction/en-gb/waterproofing/Hydroduct-CoilHydroduct® 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.
Hydroduct® Perimeter Channelhttps://gcpat.com/construction/en-gb/waterproofing/Hydroduct-Perimeter-ChannelHydroduct® Perimeter Channel
Hydroduct® RB 80https://gcpat.com/construction/en-gb/waterproofing/Hydroduct-RB-80Hydroduct® RB 80Heavy duty polyethylene root barrier suitable for protecting waterproofing membranes from damage due to plant root penetration.
Hydroduct™ striphttps://gcpat.com/construction/en-gb/waterproofing/Hydroduct-stripHydroduct™ strip
Pak Adhesivehttps://gcpat.com/construction/en-gb/waterproofing/Pak-AdhesivePak AdhesiveSealant for use with Slipstrip 2 and Aerofil boards.
Paraseal®https://gcpat.com/construction/en-gb/waterproofing/ParasealParaseal®Paraseal is a two-part, cold applied, pouring grade polysulphide sealant for critical horizontal joints in buildings,
Perm-A-Barrier® Aluminium flashinghttps://gcpat.com/construction/en-gb/waterproofing/Perm-A-Barrier-Aluminium-flashingPerm-A-Barrier® Aluminium flashingPerm-A-Barrier® Aluminum self-adhered flashing is composed of durable, cross-laminated, high density polyethylene
Perm-A-Barrier® Detail Membranehttps://gcpat.com/construction/en-gb/waterproofing/Perm-A-Barrierdetail-membranePerm-A-Barrier® Detail MembranePerm-A-Barrier® Detail Membrane is ideal for protecting and sealing critical areas of the building superstructure from
Preprufe® 160 Flexhttps://gcpat.com/construction/en-gb/waterproofing/Preprufe-160-FlexPreprufe® 160 FlexPreprufe® 160 Flex waterproof membrane is a composite sheet comprising of a robust flexible backing, a pressure
Preprufe® 160R Plus/300R Plushttps://gcpat.com/construction/en-gb/waterproofing/Preprufe-160RPlus300R-PlusPreprufe® 160R Plus/300R PlusNew generation Preprufe® membranes with unique Preprufe® ZipLap™ for fast and secure applications in all seasons and climates.
Preprufe® 300R/160Rhttps://gcpat.com/construction/en-gb/waterproofing/Preprufe-300R160RPreprufe® 300R/160RPreprufe Pre-applied Waterproofing Membranes are unique multi-layered composite waterproofing sheets made from a thick
Preprufe® 800 PAhttps://gcpat.com/construction/en-gb/waterproofing/Preprufe-800-PAPreprufe® 800 PAPreprufe® 800PA is a cold-applied, self-adhesive waterproofing membrane, composed of a reinforced cross laminated HDPE
Preprufe® SC1https://gcpat.com/construction/en-gb/waterproofing/Preprufe-SC1Preprufe® SC1Solvent based primer for use with Preprufe® 800PA waterproof membrane.
Preprufe® Tapehttps://gcpat.com/construction/en-gb/waterproofing/Preprufe-TapePreprufe® TapeA specially formulated two sided, reinforced pressure-sensitive tape. The bottom side has a highly aggressive,
Preprufe® Tieback Covershttps://gcpat.com/construction/en-gb/waterproofing/Preprufe-Tieback-CoversPreprufe® Tieback CoversThe Preprufe® Tieback Cover is a specially designed, two-part cover used to maintain waterproofing integrity at soil