Fire is an ever-present danger. The ‘chimney effect’ created by an unprotected expansion joint may actually advance its spread
Construction Specialties’ fire barrier systems are available to cover all building regulation requirements, whilst ensuring that performance is maintained during any building movement.
Why CS Fire Barrier Systems
CS Fire Barrier systems can be installed more easily and in much less time than most conventional fire barrier systems.
This is due to the simple components that make up the systems, and because no fire caulks or complicated and expensive transition mitres are required for installation.
Construction Specialties Fire Barrier Systems have been manufactured and tested to provide optimum fire protection when properly installed in the intended environment.
However, no amount of testing can guarantee a 2-hour rating in every application. For that reason we urge you to contact us direct or to contact your local CS representative for selection assistance during the initial stages of project development.
The CS Fire Barrier Range

Jointofeu Fire Barrier
A CS Expansion Joint Fire barrier offering a simple solution to maintaining fire integrity in movement / expansion joints.
Jointofeu® ropes are the ideal fire barrier for small to mid-sized expansion joints. Fully compliant with EN norms and thoroughly laboratory fire tested.
The Jointofeu® the ropes also provide excellent acoustic and thermal insulation.
- 3 models available to suit 20, 40 and 60mm joint widths.
- Supplied in 18 or 20 metre rolls (depending on model chosen).
- Fully fire tested
- Supplied complete with a suitable fire retardant adhesive.
Model | Suitable Joint Width | Allowable Movement | Fire Rating | Roll Length (m) |
---|---|---|---|---|
Jointofeu-3 | 20mm | ±4 | 180 mins | 20 |
Jointofeu-6 | 40mm | ±8 | 180 mins | 20 |
Jointofeu-9 | 60mm | ±12 | 240 mins | 18 |

Monoflex (OFX)
A blanket style system designed for a wide range of joint widths and large movement requirements. Composed of layers of fire barrier material encased in a stainless steel foil, supplied with integral galvanised steel flanges.
- Designed for 25mm to 505mm nominal floor and wall joints
- ANSI/UL 2079 tested for 1-hour and 2-hour rating (see table for details)
- Test included cycling capabilities of ±50% horizontal expansion / contraction movement and shear movement.