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Icopal Total Torch Vapour Dispersion Layer 8m

£65.00 + VAT at 20%

SKU: VDL Category: Tags: , ,
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Total Torch Vapour Dispersion Layer is a glass fibre-reinforced SBS-modified bituminous membrane. The upper surface is finished with a thermofusible film. The underside surface has specially formulated low melt bitumen stripes with quartz sand between to prevent adhesion during application. The underside is finished with a thermofusible film to prevent sticking in the roll.

Stripe technology:

When trapped pockets of vapour in the system begin to warm up they expand and can form blisters. The specially formulated striped resinous profiles are optimally spaced to cover 50% of the membrane surface. The areas between the striped profiles are coated with a quartz sand mixture to prevent adhesion during application creating resin-free channels. The resin-free channels allow any trapped vapour to dissipate along the channels under its own pressure thus preventing blistering.

Features and benefits:

  • Impervious to water.
  • The material is not susceptible to insect attack or pest damage and is unaffected by fungi, moss, lichen, moulds or bacteria.
  • Unaffected by freeze/ thaw cycling. It will support temperatures from -10 to +90 ยฐC without damage.
  • The product used in conjunction with a suitable Icopal SBS capsheet may be expected to last 20 years
  • The product is compatible with most building materials with which it is likely to come into contact with during roofing works.
  • CE marked (EN 13707, 13, 0086-CPD-505779).


Suitable for use as a partial bond underlay within a high performance bituminous built-up roofing system by eliminating blistering created from the build-up of water vapour pressure within the roof construction. It is suitable for use on both new and refurbishment projects.

Hydrocarbon solvent-based products, such as Naphtha, paraffin and creosote will have a harmful effect and should not be allowed to come into contact with these membranes.


Materials for reinforced bitumen membrane roofing should be stored upright on clean dry level surfaces, undercover and clear of the ground. The same protection should be given to materials temporarily kept outdoors or on the roof during construction. Storage temperatures should be between 0ยฐC and 30ยฐC. Refer to BS 8000-4 (Section for further information.

Installation Summary

Total Torch Vapour Dispersion Layer membranes are applied by torch-on application. The membrane is to be installed in accordance with current and relevant standards such as BS 8217, BS 6229 and BS 8000-4.


We aim to ship your products within 24 hours of you ordering with Stormspell Roofing.

Collections can be arranged by calling us on 01704 233300.


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We're rated excellent by our customers.

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From Our Customers

  • Great place to buy roofing supplies.
    The staff are very helpful and friendly
    Response from the owner
    Thanks Peter, we aim to help everyone.
    Peter Hooton
  • Very helpful good staff
    Response from the owner
    Thanks Bill
    bill griffiths
  • Had a broken tile atop my house, staff were very friendly and helpful and able to assist in getting a few tiles I needed for DIY repair. Would defo come back here for a roof replacement when needed.

    Lee Shelbourne
  • Always professional
    Response from the owner
    a pleasure as always Gary, Thanks for the 5 star review!
    Gary Cain
  • Very helpful
    Response from the owner
    dog with a bone
  • Very helpful pleasant and let me have a brew,cheers.

    Andrew Thornley
  • Staff are willing and helpfull
    Response from the owner
    Thanks Neil, we enjoy helping everyone.
    Neil Foster
  • The best roofing suppliers on Merseyside, staff are helpful, and they are really clued up, recommend to anybody

    Marc Graham
  • Very good and always friendly and helpful staff.

    Response from the owner
    Cheers James
    James Harrison
  • I was delivering roof tiles from Marley. The two blokes still at work were friendly and helpful. No complaints.
    Response from the owner
    Thanks Gordon
    Gordon Anderson
  • Excellent service really helped me out after being let down by another roofing supplier great lads would definitely recommend ๐Ÿ˜

  • Fabulous place. Staff very knowledgeable and helpful. Will certainly recommend to friends and family.

    Joan Read
  • Great service
    Response from the owner
    Thanks for the 5 stars Chris
    Chris Wright
  • Always helpfull
    Response from the owner
    Cheers Craig, we aim to help everyone.
    Craig Morrison
  • Had what I wanted at a fair price but parking is busy and on a junction so no the best
    Response from the owner
    Many thanks for your kind review, unfortunately we only have road side parking, however, if wagons are not getting loaded or unloaded then you are always welcome to park in the front or back yards. Thanks again.
    Neil Morris
  • Very helpful people ๐Ÿ‘
    Response from the owner
    thank you for the review peter!
    Peter Howard
  • Very helpful and plesant staff.
    Response from the owner
    Thanks, we aim to help all that comes in from DIYers to trades people.
    Andrea McHutchon
  • Brilliant company fast delivery, and was the best price quote for materials for my roof by a country mile. I have and will highly recommend these guys.
    Response from the owner
    Jay Ramshaw
  • Excellent service & staff are extremely freindly & very professional with good prices definitely recommended ๐Ÿ‘๐Ÿ‘๐Ÿ‘

    Response from the owner
    thankyou for the 5 star review William, always a pleasure
    william ball
  • Excellent served by Gareth a ๐ŸŒŸ also manager David followed through exactly what was promised ๐Ÿ‘๐Ÿ’ฏthank you keith and maureen webb Lydiate

    Maureen Webb
  • Great people great no fuss tip, even offered cuppa ๐Ÿ‘
    Response from the owner
    We like to keep our customers happy, tips and a cuppa are free.
    Alan Jones
  • Nice friendly staff only problem is getting to the place low bridges width restrictions bit of a nightmare

    Response from the owner
    The bridge by the Thatch & Thistle pub is the highest which all our wagons and delivery wagons use, however, Foul Lane will be getting opened up this year to enable traffic to the area without the worry of the railway bridge.
    Geoff H
  • Great place
    Response from the owner
    Thanks Craig
    Craig walton

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