Watertight flashing

i-Form, developed by IPEX, is an excellent alternative to lead flashing traditionally used to waterproof roof to wall junctions. EPDM rubber is extremely flexible, it is waterproof, environmentally friendly and has many advantages over lead.

Weatherproof your structures with i-Form

i-Form is a flexible sealing tape specially designed for weatherproofing roofs and walls. Its special composition makes it very malleable and absolutely non-deformable. i-Form is particularly well suited for structures requiring weatherproofing with a material that is highly adaptable to irregular shapes and substrates. Some water barriers can only be applied in a straight line and are unsuitable for substrates with an irregular shape. In such a case, i-Form is the ideal solution. Thanks to the special properties of the material, i-Form can easily be shaped to fit the substrate and will retain its shape.


Flashing with special peel and stick strip

If the i-Form flashing needs to be moulded to fit an irregular substrate, an extra step is necessary to make sure that the i-Form flashing stays in place: the use of a special adhesive strip. This strip adheres strongly onto the substrate. i-Form can be applied in the same way as traditional lead flashing, but does not have the downsides of lead. Durability Due to the composition of i-Form, a long life is expected. Tests carried out indicate an expected life of more than 25 years.

The composition of i-Form

I-Form, an environmentally friendly alternative to traditional building lead, is a flexible sealing tape made from durable EPDM rubber. With excellent waterproof properties and flexibility, it is ideal for sealing applications in roof and facade construction while simultaneously minimizing its impact on the environment.

I-Form is composed of three layers:

  1. A top layer consisting of EPDM rubber.

  2. An intermediate layer of special aluminium stretch metal.

  3. A bottom layer of EPDM rubber with protective film.

Additionally, i-Form is available in 3 colours: black, red, and gray, and various finishing options are available on the back, including fully adhesive, 1 or 2 butyl adhesive strips. Because we manufacture it ourselves, special dimensions or finishes are possible upon request.

IPEX, your reliable partner

i-Form, made of EDPM, is an excellent alternative to traditional lead flashing and offers many advantages. The material is flexible, waterproof, environmentally friendly and has a longer life than lead. By using i-Form as flashing material, construction companies can build a safe, efficient and sustainable structure.


IPEX offers a wide range of i-Form products that meet the highest quality standards. Please feel free to contact us for more information or for a quotation tailored to your needs. We are happy to help you find the right solution for your construction project.

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