Tayfire International Limited - Fire protection coatings and products

Flexjoint

General

Flexjoint is a passive fire, acoustic and cold smoke sealing system for all kinds of gaps and joints including movement, expansion and contraction joints. It can also form part of specialised systems to address the typical 3 axis movement that occurs in the event of seismic shock. Gaps and joints created during construction tend to be uneven in width and the formation of a weather resistant fire, gas and cold smoke tight seal using conventional materials can prove a fruitless task.

Flexijoint has been designed to overcome these problems. The Flexjoint system consists of a composite layer of special ceramic fibre blanket and aluminium foil enclosed in a proofed glass fibre outer cover which is bonded with fire resistant adhesive.

Available in lengths of 7.32 metres in roll form the Flexjoint system is easily and quickly installed with minimum jointing ensuring a non combustible fire rated gas tight and cold smoke seal.

Flexjoint is designed to cater for 100% movement and when installed in 'W' form rather than the standard V form can cope with 3 axis movement found during a seismic shock.

Applications

The versatility of the Flexjoint system allows it to be used in a wide variety of internal and external applications in both new build and refurbishment.

Floor separation fire/movement joint
Fire seal to wall cavities
Junction of compartment wall/floor or structural soffit
Joint at wall heads
Joint between cladding and floor
Seismic movement joint.

Description

Flexjoint is a composite assembly of ceramic fibre blanket and aluminium foil enclosed in a proofed glass fibre textile outer cover which is bonded with fire resistant adhesive. Flexjoint is installed in gaps in a U form with the outer faces of the legs of the U being bonded to the structure with Firecote Adhesive - Tayfire's halogen free fire resistant ablative adhesive.

Dimensions

Flexjoint is manufactured in lengths of 7.32m and in varying thicknesses. Widths of 200mm, 300mm and 400mm are available. Appropriate sizes for joint gaps are indicated in the following table.

GAP SIZE	INTEGRITY	INSULATION	WIDTH	SIZE
5MM - 25MM	120 MINS	120 MINS	200MM	FJ 200/12
5MM - 38MM	120 MINS	60 MINS	200MM	FJ 200/12
5MM - 50MM	60 MINS	60 MINS	200MM	FJ 200/12
25MM - 50MM	150 MINS	143 MINS	200MM	FJ 200/25
25MM - 75MM	ASSESSMENT AVAILABLE	ASSESSMENT AVAILABLE	300MM	FJ 300/25
40MM - 75MM	ASSESSMENT AVAILABLE	ASSESSMENT AVAILABLE	300MM	FJ 300/25/12
40MM - 130MM	ASSESSMENT AVAILABLE 60 MINS	ASSESSMENT AVAILABLE 60 MINS	400MM	FJ 400/25/12
50MM - 100MM	150 MINS	150 MINS	300MM	FJ 300/25/25
50MM - 150MM	150 MINS	89 MINS	400MM	FJ 400/25/25

FLEXJOINT ADHESIVE - COVERAGE

5LM PER 1L TO GIVE 2 HOURS FIRE RATING

2LM PER 1L TO GIVE 4 HOURS FIRE RATING

Sitework

Flexjoint is designed for quick and easy installation either by non specialist or Tayfire's specialist installers. The manufactured length of Flexjoint (7.32m) optimises ease of site handling with reduced need for butt jointing thus providing for major savings in installation costs.

Due to its weather resistance capacities, installation can be made at any time during the construction process with, especially in the case of refurbishment work, the minimum disruption to other trades.

Performance

The U form assembly and the Firecote Adhesive combine to produce a seal of up to 4 hours rating:

single 'U' form - Fire rating 2 hours
pair of 'U' forms - Fire rating 4 hours

Installation

Simply form the Flexjoint assembly into a Uform and butter the outer surfaces with Firecote Adhesive to a dry film thickness (d.f.t.) of 1 mm. Then push the Flexjoint seal into the jointensuring that the assembly is fully home into the gap.

Flexjoint should be installed using approximately 1 litre of Flexjoint Adhesive to every 5 metre length of Flexjoint. The Firecote Adhesive is used to butt joint the Flexjoint assembly at the same rate ofcoverage. For aesthetic purposes the Flexjoint assembly can be utilised as caulking for non fire rated specialist mastics or sealant.

Supply

Both Flexjoint and Firecote Adhesive can be supplied direct to contractors who will install in accordance with Tayfire (International) Ltd. guidelines, or may be installed as part of a supply and install service arranged by Tayfire (International) Ltd.

Authority

Flexjoint is manufactured under BS 5750 "Quality Systems" ' Fire integrity for up to 4 hours has been fully tested to BS 476: part 22: 1987 "Methods of determination of the fire resistance of non loadbearing elements of construction".

Services

Tayfire (International) Ltd. offer a full technical advisory and fire stopping design service.

References

Further information on a wide range of otherfire protection products is available from the company. These include intumescent coating systems, fire sealants and fire barriers.

Flexjoint