Flexitec 2020 Flexible Overlay Roofing System

The First Flexible GRP Roofing System with Full Overlay Capabilities

A  new roofing / waterproofing solution for flat roof repair and  new flat roof applications.


Like fibreglass systems, Flexitec 2020 uses a hardener for rapid curing and is reinforced with fibreglass Chopped Strand Mat for extra strength and crack-resistance. The Flexitec system uses a powder hardener. The finished membrane is extremely tough, impact resistant and can easily accommodate foot traffic.


On top of this Flexitec has an added flexible technology. It is possible to overlay all common roof surfaces such as felt, concrete, asphalt, GRP and timber – meaning roofs can be transformed without the need for strip and replace works.


Whatever the size, configuration or complexity of the roof, Flexitec 2020 provides a seamless, tough and flexible membrane to any roof or balcony area.

GRP Overlay roof before
flexitec GRP Overlay roof after

Why is Flexitec 2020 different?

Like GRP fibreglass, Flexitec 2020 is rapid-curing (30 – 60mins walk-over time) and has a highly durable  finish. Plus. like liquid overlay systems it is flexible and is able to coat a broad range of roof surfaces.​

Flexitec 2020 can be applied to almost any roof surface, this includes felt, asphalt, concrete, GRP, PVC single-ply, metal details and approved insulation boards

The Flexitec single resin system can be repaired / overcoated without grinding down

It is fire tested to BS 476-3 Rating: F.AA and EN 13501-5(4) Rating: BROOF(t4) – the highest rating a flat roof system can achieve. This enables unrestricted use under UK building regulations.

LABC Registered Detail certified (Certificate No.EW1000), gives compliance with the latest building regulations.

Applied as a one coat (10 year repair system) or two coat (20 year roofing system) system

Extremely flexible our product is ideal for any size or shape of roof. There is no need for expansion joints

Rapid installation with walk-on times of 30-60 minutes

Flexitec 2020 utilises 225g/m2 fibreglass Chopped Strand Mat to produce extra tough membrane which has a life expectancy of decades.

Installations by trained installers of the two-coat system are supported by Res-Tec’s trusted 20 year materials guarantee

Anti-slip finish grit is available for balconies and walkways

Cold applied  – no flames or other hot works

The system can be applied in temperatures as low as 1°C (with winter accelerator) or as high as 30°C

It provides a seamless membrane – no joints, no welds, no weak points, no expansion joints

Flexitec 2020 is manufactured to ISO 9001 and ISO 14001 standards for consistent quality

Grp Overlay system benefits
GRP Overlay system features

Comprison with other Overlay systems

Flexitec 10 Year & 20 Year Systems

Flexitec 2020 can be laid as a 10 year system by applying one coat of fully reinforced Flexitec 2020 Resin at the required coverage rate.

IMPORTANT – the 10 year (one coat) application is only suitable for overlaying existing waterproof coverings and is not suitable for new decks (e.g. OSB3 or concrete) or porous surfaces.


Flexitec 2020 can also be laid as a 20 year system by applying a second coat of Flexitec 2020 Resin (without reinforcement) at a coverage rate of 0.5 Litres/m2 (0.7 kg/m2) over the first coat.