NBS Source
PUDLO BW Membrane

Application

  • For all aspects of waterproofing where a Grade 2 or Grade 3 environment is required as part of a single or dual system, recommended in BS 8102:2022.
  • Suitable for post- or pre-applied situations.
  • Can be used in horizontal or vertical applications and is suitable for basement construction, including lift pits, slabs, liner walls, capping beams and service penetrations.
  • Designed to be used in structural slabs, tunnels and property line construction.
  • Can be used in sprayed concrete applications, secant/ contiguous and sheet-piled design.

Description

Sodium bentonite, high-strength, needle-punched geotextile membrane for use in waterproofing in underground, reinforced concrete structures. The membrane consists of two polypropylene geotextile layers, one woven and one non-woven, enclosing granular sodium bentonite at a minimum weight of 4.8 kg/m². The bentonite is encased within the layers, maintaining equal coverage and protecting it from construction-related damage.


Features and benefits:

  • A needle-punched, high-strength geotextile system.
  • Full surface contact between the impregnated cover layer and the PUDLO concrete ensures that small cracks and surface imperfections are sealed.
  • Forms a mechanical bond to poured concrete when cast in situ, remaining in place if settlement of the substrate occurs.
  • Self-healing.
  • Quick and easy installation (can be installed in all weather conditions).
  • BBA-accredited.
  • Peel adhesion to concrete (to ASTM D 903): 2.6 kN/m minimum.
  • Hydraulic conductivity to ASTM D 5084: 1.0 x 10-9 cm/s.

General information

Material

Polypropylene

Sodium

Length

5000 mm

Width

1100 mm

WarrantyDescription

20 year

Uniclass

Pr_15_57_27_39 Geosynthetic clay liners (GCLs)Primary

CAWS

J40/285 Loose-laid bentonite damp-proofing/ tanking membranes

Specification data - Geosynthetic clay liners (GCLs) Enhanced data

Third party product certification

British Board of Agrément (BBA) Certificate.

Certificate: 17/5438.

Weight

4.8 kg/m².

Integral accessories

Not required.

PUDLO Membrane Granules.

PUDLO Membrane Seal.

Surestop Adhesive.

Surestop BWB.

Surestop SM.

TensileStrength

8 kN/m.

Water permeability

<5 x 10 m/s-9.

Thickness

7 mm.

Puncture resistance

1.5 kN.

To EN ISO 12236.

Hydrostatic resistance

70 m.

To ASTM D 5385.

Flexibility at low temperature

Unaffected at -32°C.

To ASTM D 1970.

Accessories

Not required.

PUDLO Membrane Granules.

PUDLO Membrane Seal.

Surestop Adhesive.

Surestop BWB.

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Literature

PUDLO Waterproof Concrete Brochure

PUDLO Waterproof Concrete Brochure

PUDLO
Membrane BW
Installation Manual

PUDLO Membrane BW Installation Manual

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

PUDLO Membrane BW BBA Certificate