- -

Provoid Gas Venting System

Product
Overview
Technical
Information
Related
Accessories
Literature
Downloads
CAD
Details

Product Description

Provoid Gas Venting System consists of a 25mm geo - composite 'void former' that can be laid under the entire floor slab or, in strips at pre-determined centres, to suit the gas regime on site. Provoid 25 has been extensively tested as part of the DETR 'Partners in Technology' Report. When installed with the Provoid range of air inlets and outlets (please contact us for site - specific details), it can dilute harmful gases down to the required design concentrations for your site.

Key Features

Only 25mm thick which results in less contaminated spoil to be removed compared to a 'pipe and gravel' venting layer.
Flexible and easy to lay.
On site support and design service available with £1m Professional Indemnity Insurance.

Advantages

Large rolls available for reduced installation times.
Full range of ancillary products to ensure that the required 'air changes per hour' are achieved.
Compatible with the Protech GM range of Gas Membranes.
Can be installed by groundworker.

	Provoid Properties	Results
	Roll Length	50 m
	Roll Width	450/900mm
	Density	0.94 g/m3
	Thickness	25 mm
	Colour	Black
	Creep Resistance (200kPa for 100 Hours)	5% Max
	Intrinsic Permeability	<1.2x10-5 m2
	Forecheimer Term	<24.0 sm-1
	Ultimate Compressive Strength at Yield	225kN/m2

Provoid Accessories

A. Proctor Group offer a full range of bespoke inlets and outlets to work in conjunction with our Provoid Venting system along with piping arrangements. These items are manufactured on a job specific basis, please contact our Technical team for design support and advice.