RECOSTAL® TF/RT Isolation Joint Units
RECOSTAL® TF and RT isolation joint units are a self-supporting formwork units with bases on both sides and filler board, designed for the installation of isolation joints in concrete floor slabs.
The Benefits:
Fast and efficient installation – ready-to-use, self-supporting units eliminate the need for additional formwork or removal.
Simultaneous concreting – both slab areas can be poured at once, saving time and labor on site.
Reliable shear load transfer – optional dowel bars ensure structural continuity and stability between slabs.
Durable and corrosion-resistant – made of galvanized or stainless steel for long-term performance in demanding environments.
Enhanced insulation and separation – integrated filler board provides effective thermal and acoustic isolation.
Flexible design options – available with removable covers or edge protection to suit different construction needs.
Clean and precise joint formation – ensures high-quality concrete edges without the need for surface treatment.


RECOSTAL® TF/RT
Material | Galvanized sheet steel (stainless steel on demand) |
Filler board | Extruded foam board e = 2 cm (standard) (mineral fibre insulating material in different thicknesses) |
Types | T1 – standard T2 - with removable rectangular metal cover T3 – with removable trapezoidal plastic cover RT-XLV - with edge protection, flat steel 60/5 RT-XLW - with angle edge protection, angle 30/60/5 |
Standard unit length | 225 cm (300 cm with edge protection) |
Installation heights | Stretch-wrapped pallet |
Supporting structure | 14 to 50 cm |
Dowel bars | Round steel, galvanized or stainless steel with pre-installed plastic dowel, sleeve, sizes according to specification |
Similar products
Place the RECOSTAL® isolation joint unit on top of the level blinding and fix with nails driven through the pre-punched holes in order to prevent the unit from moving sideways. If the units are installed on top of a mud slab or gravel, use extra long nails.

