Rexpandit Fire protection joint element - Fire protection products

Rexpandit 10/30, Rexpandit 20/40, Rexpandit 30/50
Application photo
Tested in solid construction, timber construction and hybrid construction

Rexpandit 10/30, Rexpandit 20/40, Rexpandit 30/50

Application photo

Tested in solid construction, timber construction and hybrid construction

Joint fire protection

Rexpandit Fire protection joint element

The approved and innovative fire protection solution for sealing expansion joints in walls or ceilings in timber, hybrid and solid construction.

FREQUENTLY USED FOR:

Solid construction

Wood and hybrid construction

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To our FAQ

Rexpandit is a joint element that foams up in the event of fire for the fire protection sealing of structural joints in walls or ceilings in timber construction, hybrid construction and solid construction.

It consists of a compressible foam strip and, depending on the version, one or two layers of Flaton-flex EN intumescent material on both sides.

In the event of fire, the outer layers of Flaton-flex EN expand. The joints are filled by the material that forms. The foam is displaced in the process. This creates an effective barrier that prevents the passage of fire, heat and smoke for at least 90 minutes or 120 minutes.

All the advantages at a glance

Elastic and compressible
Foams up in the event of fire
Sound- & smoke-tight
Tested for shear & expansion movements
No embrittlement at low temperatures
For expansion joints of 10-50 mm
Simple, tool-free installation
European Technical Assessment (ETA)
Environmental Product Declaration (EPD)

Rexpandit is the approved fire protection solution for wall and ceiling joints as well as for joints between walls and ceilings with possible lateral expansion movement in solid construction, hybrid construction and timber construction.

Name	Length x width x filling depth	For joints from to	Application	Article number
Rexpandit 10/30	1000 x 32 x 60 mm	10-30 mm	Timber & hybrid construction	127034
Rexpandit 20/40	1000 x 48 x 60 mm	20-40 mm	Solid, timber & hybrid construction	127035
Rexpandit 30/50	1000 x 58 x 60 mm	30-50 mm	Solid construction	127036

Classified fire resistance timber & hybrid construction	EI 90
Classified fire resistance solid construction	EI 120
Building material class	C-s1, dO according to DIN EN 13501-1:2019-05
Joint sound reduction index	Rs,w = 45.9 dB for 10 mm joint with “Rexpandit 10/30” Rs,w = 37.2 dB for 20 mm joint with “Rexpandit 20/40”
Thermal insulation properties	<0.035 W /(m²K) at 10°C
Flaton-flex EN is halogen-, antimony-, silicone- and solvent-free
The foam is manufactured without the use of halogenated hydrocarbons and is not hazardous to water.
Rexpandit is propellant-free and does not require labeling in accordance with the Hazardous Substances Ordinance

Before installing Rexpandit, the inside edges of the joint must be cleaned.
Any formwork rust, concrete splashes etc. must be removed.
Rexpandit is simply compressed and pushed into the joint. The joint is smoke-tight and soundproofed immediately after installation.
The end faces must be laid butt to butt. No further fixing is necessary.
Alternatively, Rexpandit can also be applied to prefabricated elements during production after consultation.

Tested joint designs / installation cases

Cross laminated timber to aerated concrete & cross laminated timber to cross laminated timber
Product	Joint type	Movement	Classification
Rexpandit 10/30	Horizontal ceiling joints	max. 20 mm elongation, max. 25 mm shear	EI 90-H-M291-F-W 10
Rexpandit 10/30	Wall joints	max. 20 mm elongation	EI 90-V-M200-F-W 10
Rexpandit 20/40	Horizontal ceiling joints	max. 20 mm elongation, max. 25 mm shear	EI 90-H-M136-F-W 20
Rexpandit 20/40	Wall joints	max. 20 mm elongation	EI 90-V-M100-F-W 20

Aerated concrete to aerated concrete
Product	Joint type	Movement	Classification
Rexpandit 20/40	Horizontal ceiling joints	max. 20 mm elongation, max. 25 mm shear	EI 120-H-M136-F-W 20
Rexpandit 20/40	Wall joints	max. 20 mm elongation	EI 120-V-M100-F-W 20
Rexpandit 30/50	Horizontal ceiling joints	max. 20 mm elongation, max. 25 mm shear	EI 120-H-M88-F-W 30
Rexpandit 30/50	Wall joints	max. 20 mm elongation	EI 120-V-M66-F-W 30

Solid building component (aerated concrete)

Components made of aerated concrete with a bulk density of 650 kg/m³ ± 200 kg/m³ or higher bulk densities for normal concrete, hollow blocks and masonry.

Cross laminated timber

Solid construction element made of wood type “KLH-CLT®” according to ETA-06/0138 with a gross density of 402.5 kg/m³ or greater and 120 mm component thickness or thicker in wall components. For ceiling components, the gross density is 446.4 kg/m³ or greater and at least 160 mm component thickness.