Sealoflex Enviroflex™ System Installation Guide - Icopal

System Installation Guide


General Guidance

Before applying the Enviroflex™ System ensure that surfaces to be coated are firmly fixed, dry, smooth and free from any contaminants that could inhibit adhesion.

The Enviroflex™ System can be applied to a wide range of new and existing substrates, where alternative, more traditional methods of waterproofing prove difficult.

Suitable substrates include;

  • Bitumen membranes
  • Weathered asphalt
  • Plywood & OSB/3 – new or existing
  • Concrete / cementitious screeds
  • Single ply membranes
  • Metals – galvanised or coated
  • Profiled cement sheeting
  • Profiled asbestos sheeting
  • GRP/ fibre glass


Roof Falls
The roof should be constructed to have a minimum finished fall of 1:80, in accordance with “BS 6229 : Flat roofs with continuously supported coverings. Code of practice”. A designed fall of 1:40 is recommended to allow for inaccuracies and construction settlement.

Drainage should be provided through internal outlets and downpipes, or to roof edges with external gutters/hoppers. It is recommended that the roof has a minimum of two outlet points in case of blockage.

Site Safety
It is the responsibility of the installer to ensure that the work carried out is safe for themselves, their employees, their customers and the general public.

Protective Clothing
Always use relevant Personal Protection Equipment (PPE) i.e. hand protection, eye protection, ear protection, hard hats and safety footwear where and when appropriate.

Application Conditions
The surface of the substrate should be clean and dry and must be 3 °C above the dew point. If the surface is below or at dew point temperature then moisture can form at the surface and affect coating adhesion and curing. Do not apply the membrane over frozen matter.

Board Joints

Plywood and OSB/3 board joints should be bandaged with 100mm wide Sealoflex® Reinforcing Fabric embedded within a light application of Enviroflex™ Liquid Applied Waterproofing.

Accessory Products
In domestic applications profiled GRP trims can be applied to simplify detailing to the roof perimeters at drip and watercheck edges and abutments as appropriate.

Examples of preformed GRP Trims available through your local distributor.
GRP Trim Drip Edge GRP Trim Watercheck GRP Trim Watercheck
Drip edge


Upstand fillet

Sequence of Installation
All preliminary work including the application of pre-fabricated upstands, drip trims, kerbs, chases, expansion joints, etc. should be complete and satisfactory prior to application of the Enviroflex™ membrane. These prepared details should be waterproofed before the main field area application.

Storage of Materials
Containers should be stored in a dry and cool environment on a flat, level, and clean surface away from sources of ignition. Protect the product against moisture, direct sunlight and extremes of temperature. Keep containers tightly closed when not in use.

Clean tools immediately after use. Wash hands after use.

Enviroflex™ Primers are applied by brush or roller to seal the substrate prior to application of the Enviroflex™ Waterproofing System.

Wet-on-Wet Application

The Enviroflex™ membrane is applied ‘wet-on-wet’ allowing full membrane application in a single process. The three stage process is as follows:

Embedment Layer
Gently stir opened coating using a paddle and apply directly to the prepared substrate at the recommended coverage rate.

Embed the polyester reinforcement fabric into the embedment layer.

Top Coat
Encapsulate the installed reinforcement fabric by making a further application of Enviroflex as the top layer at the specified coverage rate.


The Enviroflex™ Anti-Skid Walkway is applied as follows:

Preparation Coat
Once the Enviroflex™ waterproofing system has cured, apply Enviroflex™ Coating at a coverage rate of approximately 0.2 L/m².

Anti-Skid Quartz
Broadcast the Enviroflex™ Quartz granules into the preparation coat at a rate of approximately 2.5 kg/m².


Encapsulate the Enviroflex™ Quartz layer with the application of Enviroflex Clear Coat at a coverage rate of approximately 0.5 L/m².

Further Information

For further specification and installation contact the Technical Support Team on:

0161 865444

    Contact Icopal 0161 8654444

    Find Local Support

    To discuss your project in more detail please contact
    Your Local Area Manager


    Technical Support


    0330 123 4585



    Sales Enquiries & Orders


    0843 224 7400


    0843 224 7401


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