Pro Void Vent 25 - Gas Dispersal Layer
Verified by manufacturer 4 months ago
Gas dispersal layer made up of a cuspated HDPE core with a geotextile filter/ separator bonded to a single side
Application
Intended use is to provide a means of ventilation when used in conjunction with an approved Gas Protection Barrier, in accordance with the recommendation(s) contained within NHBC Guidance and BS 8485:2015.
Description
A gas dispersal layer made up of a cuspated HDPE core with a geotextile filter/separator bonded to a single side supplied in rolls.
Features and benefits:
- Optimized for maximum strength and performance.
- Providing high levels of air and or gas flow complying with the latest codes of practice, as published by BRE, CIRIA and NHBC.
- PRO VOID VENT 25 is independently tested and verified by UKAS accredited bodies.
- Gas venting mat.
- Optimised for strength and gas flow.
- Easy to lay.
- Handling: Roll weights can be between 50 and 100 kg hence appropriate equipment is required for unloading and handling.
- Storage: supplied in packaging designed to protect product from damage during handling and degradation as a result of UV exposure. Product should be kept in supplied packing until time of installation.
- Refer to specific Void Vent installation guidance.
- Detailed assistance is available from Delta Membrane Systems Ltd.
General information
Color | Black Grey |
Material | High density polyethylene (HDPE) Guidance for specification option: Does not support bacterial growth and is highly resistant to acids and alkalis. |
Shape | Rectangle Guidance for specification option: Supplied as a roll. |
Length | 50000 mm |
Width | 900 mm |
Height | 27 mm |
Warranty description | 60 year |
Uniclass | |
CAWS | J42/395 Air and vapour control layer H92/450 Air and vapour control layer H30/30 Air and vapour control membrane H31/261 Air and vapour control membrane H31/45 Air and vapour control membrane H30/261 Air and vapour control membrane |
Specification data - High-density polyethylene (PE-HD) studded sheets
Standard | To BS 8485:2015 + A1:2019. |
Filter layer | Geotextile. |
Sheet thickness | 27 mm. |
Weight (minimum) | 50–100 g/m².Guidance for specification option: Gross 60 kg per roll as supplied. Can be 50–100 kg. |
Colour | Black/ grey. |
Performance characteristics | |
Flow rate | 5.0 L/s/m.Guidance for specification option: To EN ISO 12958, 200 kPa, (i)=1 (composite). Permeability (H50) geotextile: 100 (-20) L/m²/s. Gas flow capacity (composite): 0.024 m³/s.
|
Purpose | Vapour control layer. |
Tensile strength (minimum) | To EN ISO 10319 (MD/CMD): 20/15 (-2.0/-1.5) kN/m. |
Roll size | 50 x 0.9 m. |
Typical compressive strength | 300 kPa. |
Performance characteristics | CBR puncture resistance: 14 (-0.14) kN. |
Sustainability data
Contains Red List materials | No |
Material | High density polyethylene (HDPE) Guidance for specification option: Does not support bacterial growth and is highly resistant to acids and alkalis. |
Recyclability | Yes |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
 IFC | - | 1 |
Literature
MemTech Ground Gas Protection
Case studies
Structural Waterproofing & Ground Gas Protection
Structural Waterproofing and gas proofing using membranes (twin solutions)