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The product information below is from the NBS Plus library of product clauses offered in NBS specification products. It has been created by NBS for Visqueen Building Products. The clause is authored in NBS format and is intended for inclusion in project specifications. The clause can be copied and pasted into your project specification document. Please note that NBS product guidance is not a replacement for the manufacturer's literature and it is recommended that Visqueen Building Products be consulted before specifying.

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View larger image of Visqueen Ultimate VOC BLOK from Visqueen Building ProductsVisqueen Ultimate VOC BLOK

Visqueen Ultimate VOC BLOK is a flexible membrane designed to comply with current guidance on Volatile Organic Compounds (VOCs) and ground gases.Manufactured using Visqueen’s advanced membrane technology and is suitable in brownfield applications which are affected by aggressive chemicals such as Benzene, Toluene, Ethyl Benzene and Xylene (BTEX). The product is available in large roll formats to minimize jointing and for quick installation. The membrane is grey and black, 2440 x 41 000 x 1 mm (100 m²), in single wound roll format.Features and benefits:Conforms to CIRIA C748 and BS 8485:2015. CE marked to EN 13967.Excellent VOC and methane barrier resistance.Exceptional flexibility and puncture resistance.Comprehensively tested and validated test results.Welding and Visqueen Gas Resistant tap system options.Flexible, even at low temperatures which limits stress cracking.System components:Visqueen GX double-sided bonding tape.Visqueen gas resistant lap tape.Visqueen surface DPC fixing system.Visqueen GX DPC.Visqueen GX top hat units.Visqueen detailing strip.Applications:Suitable for the following applications:VOC/ hydrocarbon contaminated sites in accordance with CIRIA C748.Carbon dioxide and methane sites in accordance with BS 8485:2015.Radon affected sites in accordance with BRE 211:2015.Damp protection in accordance with Building Regulations Approved Document C.Ventilation:Visqueen recommends when high levels of ground gases are present in accordance with BS 8485:2015 or when the generation of gases still occurs, then an open void beneath the ground floor should be constructed as ventilation beneath the ground floor will dilute and disperse the gases to atmosphere. Open voids are normally restricted to beam and block floors or other precast concrete floor systems. An alternative for providing ventilation to in situ concrete floor slabs is to install a Visqueen Gas Venting System.Technical characteristics:Colour: Grey/ black.Size (l x w) EN 1848-2: 41 x 2.44 m.Thickness EN 1848-2: 1 mm.Methane permeability ISO 15105-1: <40 ml/ m²/ day/ atm (Pass).Puncture resistance BS EN ISO 12236: 2850 N.Impact resistance Method A hard surface EN 12691: 750 mm.Impact resistance Method B soft surface EN 12691: >2000 mm.Tensile yield strength MD 1 ASTM D4885-01: 11.9 kN/m.Tensile yield strength CD 1 ASTM D4885-01: 12.7 kN/m.Elongation at break MD 1 ASTM D4885-01: >500%.Elongation at break CD 1 ASTM D4885-01: >501%.Tear resistance - trouser method A - MD BS ISO 34-1: 79.6kN/m.Tear resistance - trouser method A - CD BS ISO 34-1: 75.8 kN/m.Tear resistance - angle method B - MD BS ISO 34-1: 128.3 N.Tear resistance - angle method B - CD BS ISO 34-1: 126.9 N.C748 Permeation vapour tests (ISO 15105-2), 100% concentration (<1 ml/ m²/ day):Benzene.Toluene.Ethyl benzene.(m,p, and o) xyxlenes.Hexane.Vinyl chloride.Tetrachlororthene.Trichloroethene.Naphthalene.

Visqueen Ultimate VOC BLOK is a flexible membrane designed to comply with current guidance on Volatile Organic Compounds (VOCs) and ground gases.

Manufactured using Visqueen’s advanced membrane technology and is suitable in brownfield applications which are affected by aggressive chemicals such as Benzene, Toluene, Ethyl Benzene and Xylene (BTEX). The product is available in large roll formats to minimize jointing and for quick installation. The membrane is grey and black, 2440 x 41 000 x 1 mm (100 m²), in single wound roll format.

Features and benefits:

  • Conforms to CIRIA C748 and BS 8485:2015. CE marked to EN 13967.
  • Excellent VOC and methane barrier resistance.
  • Exceptional flexibility and puncture resistance.
  • Comprehensively tested and validated test results.
  • Welding and Visqueen Gas Resistant tap system options.
  • Flexible, even at low temperatures which limits stress cracking.

System components:

  • Visqueen GX double-sided bonding tape.
  • Visqueen gas resistant lap tape.
  • Visqueen surface DPC fixing system.
  • Visqueen GX DPC.
  • Visqueen GX top hat units.
  • Visqueen detailing strip.

Applications:

Suitable for the following applications:

  • VOC/ hydrocarbon contaminated sites in accordance with CIRIA C748.
  • Carbon dioxide and methane sites in accordance with BS 8485:2015.
  • Radon affected sites in accordance with BRE 211:2015.
  • Damp protection in accordance with Building Regulations Approved Document C.

Ventilation:

Visqueen recommends when high levels of ground gases are present in accordance with BS 8485:2015 or when the generation of gases still occurs, then an open void beneath the ground floor should be constructed as ventilation beneath the ground floor will dilute and disperse the gases to atmosphere. Open voids are normally restricted to beam and block floors or other precast concrete floor systems. An alternative for providing ventilation to in situ concrete floor slabs is to install a Visqueen Gas Venting System.

More about Visqueen Ultimate VOC BLOK:
As standard

Visqueen Ultimate VOC BLOK
 Manufacturer:
Visqueen Building Products.
  -Web:www.visqueenbuilding.co.uk.
  -Tel:+44 (0)845 302 4758.
  -Product reference:
Visqueen Ultimate VOC BLOK.

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Guidance

for Visqueen Ultimate VOC BLOK

from Visqueen Building Products

More about Visqueen Ultimate VOC BLOK: As standard

As standard

Technical characteristics:

  • Colour: Grey/ black.
  • Size (l x w) EN 1848-2: 41 x 2.44 m.
  • Thickness EN 1848-2: 1 mm.
  • Methane permeability ISO 15105-1: <40 ml/ m²/ day/ atm (Pass).
  • Puncture resistance BS EN ISO 12236: 2850 N.
  • Impact resistance Method A hard surface EN 12691: 750 mm.
  • Impact resistance Method B soft surface EN 12691: >2000 mm.
  • Tensile yield strength MD 1 ASTM D4885-01: 11.9 kN/m.
  • Tensile yield strength CD 1 ASTM D4885-01: 12.7 kN/m.
  • Elongation at break MD 1 ASTM D4885-01: >500%.
  • Elongation at break CD 1 ASTM D4885-01: >501%.
  • Tear resistance - trouser method A - MD BS ISO 34-1: 79.6kN/m.
  • Tear resistance - trouser method A - CD BS ISO 34-1: 75.8 kN/m.
  • Tear resistance - angle method B - MD BS ISO 34-1: 128.3 N.
  • Tear resistance - angle method B - CD BS ISO 34-1: 126.9 N.

C748 Permeation vapour tests (ISO 15105-2), 100% concentration (<1 ml/ m²/ day):

  • Benzene.
  • Toluene.
  • Ethyl benzene.
  • (m,p, and o) xyxlenes.
  • Hexane.
  • Vinyl chloride.
  • Tetrachlororthene.
  • Trichloroethene.
  • Naphthalene.

Further Information

Literature:

RIBA Product Selector

Additional information may be available for Visqueen Building Products from ribaproductselector.com.

Contacts:

www.visqueenbuilding.co.uk

riba@visqueenbuilding.co.uk

T: +44 (0)845 302 4758

F: +44 (0)845 017 8663

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NBS Plus
www.thenbs.com/solutions, online library, 26 September 2017