FlexiProof One-Piece EPDM is a cold-applied rubber roofing membrane designed to cover flat roofs with a single homogeneous sheet where the selected width and length allow. It is sold by Forti Nova in cut-to-length and full-roll options.
Choose a sheet that covers the maximum roof dimensions plus every required perimeter and upstand allowance. The store lists 1.20mm and 1.52mm options; the correct thickness depends on the project specification, not price alone.
What the manufacturer guide says
- Homogeneous extruded EPDM sheet with a smooth finish
- Cold-applied, flame-free installation
- Puncture resistant and elastic enough to accommodate normal building movement
- Permanently UV stable and fully recyclable
- Manufacturer-stated 50-year life expectancy
- 25-year membrane warranties are described as available on request for certified installers
- Manufacturer literature describes CE marking and a BROOF(t4) fire rating
1.20mm or 1.52mm EPDM?
Both thicknesses use the same one-piece concept. The 1.52mm membrane contains more material and is heavier. Use the thickness required by the roof design, specification or warranty route; do not assume thicker is automatically necessary for every domestic roof.
How to size a one-piece membrane
- Measure the deck. Record the maximum length and width, not an average.
- Add details. Allow for upstands, wall junctions and the required overhang at perimeter trims.
- Choose a listed width. Select the smallest available width that still covers the full requirement.
- Set the cut length. The quantity on a cut-to-length variant represents linear metres of the selected width.
- Plan handling. Large sheets are heavy and need enough people and clear space to position safely.
Use system-compatible products
The deck adhesive, contact adhesive, primer, tapes, sealants and Integra Trim components perform different jobs. Match each product to the membrane, substrate and roof detail shown in its current instructions.
Shop the system
Shop FlexiProof one-piece EPDM →
Shop compatible adhesives and sealants →
Shop roof trims and corners →
Frequently asked questions
Can EPDM be installed without a flame?
Yes. FlexiProof One-Piece EPDM is designed as a cold-applied system, so it avoids flame-applied bitumen methods.
What does one-piece EPDM mean?
It means the main roof area can be covered with one homogeneous sheet when a suitable width and length are selected, reducing field seams in the main membrane.
Is the quantity square metres?
For a cut-to-length width variant, quantity is normally the number of linear metres at that selected width. Read the exact variant label before ordering.
Can cut membrane be returned?
Cut-to-size material is prepared for the order and may not be returnable. Confirm every measurement before checkout.
Need project-specific help?
Forti Nova supplies the FlexiProof system with practical product support. Send your maximum roof dimensions, deck type and details such as upstands, outlets, rooflights and corners before ordering.
Ask Forti Nova for free product advice → Training and installation support →
This web guide is based on the supplied FlexiProof manufacturer literature. Follow the current instructions supplied with the product, observe safe working-at-height practice and obtain project-specific design or structural advice where required.