For Flat, Curved & Sloping Roofs

For Flat, Curved
& Sloping Roofs

25 Year Guarantee

25 Year
Guarantee

Specialist Advice & Support

Specialist Advice
& Support

Express National Delivery

Express National
Delivery

We've waterproofed 180m SqM of roofs!

We've waterproofed
180m SqM of roofs!

Request a sample

Request
a sample

Single-Ply Membranes

Our Single Ply Membranes set the UK gold standard for waterproofing all roof types, including flat, curved, sloped, mansard, and dormers. alwitra® products surpass all competitors in reliability, offering a superior single ply solution for flat roof waterproofing compatible with green, brown, or blue roof systems.

EVALON® Range

EVALON V

EVALON® V

Superior Single-Ply Waterproofing

Superior single ply waterproofing at its best.

  • Bitumen-free & solvent-free
  • UV Stable
  • Root-resistant
  • Fire load five times lower than that of a built-up felt roof
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EVALON VSK

EVALON® VSK

Self-Adhesive Single Ply Membrane

The #1 self-adhesive waterproofing membrane

  • Self-adhesive underside coating
  • Bitumen-free & solvent-free
  • High adhesive strength
  • Ideal for steep slope or curved roof areas
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EVALON VG

EVALON® VG

Superior Fire-Retarding Waterproofing

Superior Fire-Retarding Waterproofing

  • Compatible with bitumen
  • High thermal-mechanical resilience
  • Root and rhizome-resistant
  • High reflection of heat rays
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EVALON VGSK

EVALON® VGSK

Superior Fire-Retarding Self-Adhered Waterproofing

  • Up to five times lower fire load compared to two-layer seals
  • Optimal vapour pressure compensation function of the polyester fleece or glass/polyester fleece backing
  • Self-adhesive underside coating
  • With the integrated fire protection layer, for direct bonding on unbacked rigid EPS foam boards
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What is a Single Ply Membrane?

Single ply membranes are flexible synthetic polymer waterproofing sheets specifically designed to waterproof flat roofs. This type of roofing can be categorised into two groups: thermoplastics and synthetic rubber, offering a modern solution for flat roof applications.

What is the best Single Ply Membrane?

The best Single Ply Membrane is a vinyl-ethylene-terpolymer (VET) membrane, comprising polyvinyl-chloride (PVC) and ethylene-vinyl-acetate (EVA), which results in an extremely stable product, free from potentially harmful volatile plasticisers. With excellent chemical resistance. It provides a reliable protective membrane against inclement weather to ensure buildings remain protected for years to come.

alwitra® are the leading supplier of Single Ply Membranes with a 50-year service life and a 25-year guarantee, they are as reliable as they are cost-effective. Easy to install, and available in various colours to replicate traditional roofing at a lower cost, these BREEAM Accredited, UV stable, root-resistant membranes are bitumen-free, solvent-free and applied cold. Most importantly, they are trusted by architects, roofing contractors and developers throughout the world.

System Components

Aluminium Profiles

Aluminium Profiles

High-quality aluminium profiles for roof edging and roof capping.

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Daylight Systems

Daylight Systems

Superior daylight systems providing light and excellent thermal insulation.

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Roof Drainage

Roof Drainage

The perfect solution to various drainage issues for low sloped roofs.

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Accessories

Accessories

Additional extras to customise your alwitra® waterproofing system.

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Want to become an alwitra® accredited installer?

  • High-quality training
  • Become accredited
  • Receive new business leads from alwitra®

Apply Today

Our membranes are used by architects, contractors & developers. View all

Archdiocese of Liverpool
Coventry City Council
Aecom
3D Reid
Balfour Beatty
InFrame Garden Rooms
Churchill
Fife Council
Angell Thompson
Alec French Architects
ISG
Aloft Roofing & Leadwork
English Heritage
Glasgow Housing Association
Coomber Associates
Arc
Jade-Aden
Ashtree Roofing

Need expert advice or just have a question?

Our specialists are here to support you.
Just ask.

Contact Us 01202 785200

Here's what some of our clients have to say...

We have been alwitra® contractors for many years and have always been impressed with the results and reliability of the product. The customers…

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Michael

I, James Hopkins Director of JH Specialist Roofing install single-ply membranes on a daily basis, we as a company have tried numerous types of…

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James

We have used VSK extensively over the last 5 years, we have found it to be a great product and really good for complex detail work. We find using…

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Dave

As a small flat roofing business carrying out mostly domestic refurb work and small extensions EVALON® VSK is our preferred single ply membrane…

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Charlie

We have been an approved contractor for many years, the level of customer service and the quality of the products provided by ICB (Waterproofing) is…

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Carlo

We have worked with ICB on several occasions and we would thoroughly recommend them for their high level of professionalism and efficiency. The team…

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OB Architecture

ICB provides an excellent service with all the professional back-up required at the development stage through to completion. The manner in which you…

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Dave

I am pleased to recommend ICB as Company, through my personal experience and that of my Business, for the following reasons: They are an easy Company…

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John

We believe, as one of your approved contractors, over the years we have had a great working relationship with yourselves. When working on projects…

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Martin

Best system on the market – VSK all the way!!!!!!

Richard

alwitra® is a lovely membrane when you have some detailing and gutters as you can go all the way through in a oner…

Dave

…that’s the beauty of this membrane, (you) can complete field sheet and upstand in one go, nice and tight and (a) crisp finish in the…

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Shaun

This product has to be the most versatile single-ply system we have used. Unbeatable finish.

Lee Orchard

EVALON® VSK – such a quality and versatile membrane.

Lee Orchard

In my mind the best single-ply.

Peter

Can’t beat VSK

Lee

We find all the staff at ICB, friendly, helpful & knowledgeable.

Steve

EVALON® VSK! Surely the best single-ply waterproofing membrane ever produced! A++++

Kevin

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