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Proofex Engage

Verified by manufacturer 3 months ago

Fosroc International Limited Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Robust Type A, pre-applied, fully bonded, gas-resistant waterproofing membrane for use in below ground, reinforced concrete structures.

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  • Formwork, oversite concrete or compacted sand blinding on granular fill.
  • Both the horizontal and the vertical using one grade of membrane.
  • For concrete basements, lift pits, carparks and other water excluding structures.
  • Provides water, water vapour and gas protection to water excluding structures and protects concrete from aggressive ground salts, chemicals and hydrocarbons.


A waterproofing membrane, which mechanically bonds to poured cast in situ concrete, remaining in place if settlement of the substrate occurs. A polyethylene membrane faced with a bonded complex cell mesh, allowing poured concrete to interlock with the membrane.

Features and benefits:

  • Unique mesh system bonds permanently to concrete, remaining in place even if settlement takes place
  • Smart anti-tracking design prevents water tracking between membrane and concrete
  • Simple and quick to install - no protection film to remove
  • Provides Methane and Carbon Dioxide protection as defined in BRE Report 212 and independent assessment report
  • Crack bridging up to 5mm (100 cycles) ASTM C1305 modified
  • Radon protection as defined in BRE Report 211
  • BBA certification
  • Protects concrete from attack from chemicals, hydro- carbons and aggressive ground salts in contaminated sites
  • Simple application - requires no primer or protection, and blinding concrete may be eliminated
  • Inert product - no risk of a reaction with ponded water prior to concrete being poured
  • Membrane composition gives excellent flexibility for detailing, combined with high durability and toughness for site trafficking.
  • Root resistant
  • Long life expectancy.

General information






30000 mm


1270 mm

Warranty description


Manufacturer guidance

A project specific warranty document for an agreed period for products supplied in accordance with a detailed specification document is available on request.


Pr_25_57_65_60 Plastics sheetsPrimary


J40/130 Loose-laid plastics or rubber sheet oversite damp-proofing

J40/30 Loose-laid plastics or rubber sheet oversite damp-proofing

Specification data - Plastics sheets


Polyethylene (PE).


Waterproofing below ground concrete structures.


To EN 13967.

Performance characteristics


Tensile strength (minimum)

To EN 13967 Longitudinal >10.0 N/mm² Transverse >8.0 N/mm².

Tear resistance

To EN 13967, Longitudinal >500 N.

Elongation to break

To EN 13967, Longitudinal >300%, Transverse >200%.

Resistant to underground gases

Methane, radon and carbon dioxide.

Fire performance

To EN ISO 11925-2, Pass.

Third-party certification

British Board of Agrément (BBA) Certificate.


Cell mesh bonded to a blended polyethylene and polypropylene membrane.

Root inhibitor


Manufacturer guidance

Resistance to roots - PD CEN/TS 14416:2014.

Physical properties






Thickness (minimum)

4–5 mm.

Guidance for specification option:

Overall thickness.

Membrane thickness: 0.8 mm.

Width (minimum)

1.27 m.

Roll length (minimum)

30 m.

Sealant tape

Not required.

Proofex Detail Strip.

Guidance for specification option:

A reinforced double sided waterproof adhesive tape for sealing and jointing roll ends, cut edges and wall to floor detailing.

Puncture resistance

600 N.


74 N per 50 mm (Concrete cast against grid and cured for seven days. Peel adhesion tested at 50 mm/minute at 20ºC.)

Manufacturer guidance

Peel adhesion to concrete (BS 4254 mod)


Joints with selvedge: 377 N. Joints with Proofex Detail Strip joint sealant: 506 N.

Manufacturer guidance

(MOAT 27:5.2.2)


Surfaces: Clean and dry beyond full width of joint. Laps: Edge laps 75 mm. End laps, butt jointed and taped.

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

BBA Certificate for Proofex Engage


Fosroc Types A B and C Solutions for Waterproofing

Fosroc Types A B and C Solutions for Waterproofing

Fosroc Proofex Engage Product Data Sheet

Fosroc Proofex Engage Product Data Sheet

Technical Datasheet Catalogue 15th Edition

Technical Datasheet Catalogue 15th Edition

Case studies

One City Park

One City Park

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