Special Scenarios

Butt joint

Smooth frame with chamfer deep in concrete

Smooth frame with chamfer high in concrete

As with smooth exposed concrete, joints, edges, and corners in textured concrete are formed using suitable mouldings. During planning and production, it must be clearly defined whether all dimensions are referenced to the deepest point, the shallowest point, or the center of the texture. When setting out and manufacturing the formwork, the thickness of the formliner back must be taken into account to ensure dimensional accuracy of the finished concrete element.

Chamfered cove, high in concrete

Chamfered cove, deep in concrete

Chamfer in Formliner

Cove with chamfer, high in concrete

Cove with chamfer, middle in concrete

Cove with chamfer, deep in concrete

Formwork

Formliner Cut-Outs

Cut-outs, e.g. for doors or windows, in concrete elements can be made by precisely cutting the formliner and inserting formwork. To save cutting the formliner see below alternative.

First mark the area to be blocked off on the formliner and clean it thoroughly with RECKLI Stripping Wax TL or TL-SO. Cover the formliner with two coats of RECKLI Mould Wax and leave to air dry until the solvent has evaporated, leaving a silky-matte sheen on the formliner.

Then add several layers of Stop Off Paste PUR – at least 5 mm higher than the highest point – to the area. Now position strips of wood onto the fresh Stop Off Paste and press until the material is squeezed out at the sides.

Once the Stop Off Paste has hardened (around 1 hour), the board with the paste can be removed.

The counter profile can then be cut to size accurately using a circular saw.

Now place the barrier in the desired position along the area to be cordoned off and proceed as usual.

Please Note

The areas treated with RECKLI Mould Wax must be neutralized with RECKLI Stripping Wax prevent colour deviations on the finished concrete piece. Use a clean rag soaked in the right RECKLI Stripping Wax. Use this rag to thoroughly remove all traces of RECKLI Mould Wax residue from the formliner.

Counter formliners are perfectly fitting counterparts for certain formliner areas. When using symmetrical textures (ribbed and wave patterns), a strip of formliner with the relevant texture can be used instead of a counter profile in Stop Off Paste PUR.

Repairs

RECKLI Elasto-Filler can be used to repair and improve damaged and/ or torn RECKLI formliners.

To achieve proper adhesion of the spackling paste, the area to be treated must be clean and dry as well as free from dust, oil, wax and fat. The repair site must also be scuffed with sandpaper. RECKLI Elasto-Filler must be used to fill the repair site within the processing time. Excess material must be removed while fresh. Textural improvements and leveling must also be carried out fresh. Any remaining residue can be sanded away after around 2–3 hours, and the material will be sturdy after around 4–5 hours.

To strengthen breakages and joins, clean the join or crack edges carefully. Place PE film or oiled paper under the join site to prevent the formliner from sticking to the surface below due to excess Elasto-Filler being squeezed out. Then apply RECKLI Elasto-Filler to the repair sites and press together lightly. Any Elasto-Filler that is squeezed out should be removed while fresh, as cured it can only be sanded or cut off. Once the Elasto-Filler has cured, place the formliner on its textured site. Sand an area around 3–5 cm wide on the back of the formliner on both sides of the seam at a depth of around 3 mm. Fill the sanded depression with RECKLI Elasto-Filler and level. After around 2–3 hours, this join site must be surface-ground. Then turn the formliner back over and rub the repaired tear site with RECKLI Stripping Wax TL, TL-SO or TL-W.

Please Note

The results of repairs may vary depending on the individual case. RECKLI does not accept liability for this. A seam site can never fully replace an undamaged formliner. There is also the risk of the repaired formliner damage showing up in the finished textured surface despite work being carried out carefully.

Leveling the back of the formliner

Due to the texture, it cannot be guaranteed that all formliners are always the same thickness. It may therefore be necessary to level the back of the formliner through sanding or filing. Place the formliners on their textured sides and position them together. The thicker formliner should then ideally be reduced in size to correspond with the thinner formliner by sanding back with a circular or band sander.

If the difference in thickness is too great, it may be simpler to increase the back of the thinner formliner by applying RECKLI Formliner Adhesive SO or RECKLI Elasto-Filler at the edge:

Buff the area to be leveled with sandpaper and properly mix some RECKLI Formliner Adhesive SO or RECKLI Elasto-Filler. Pour or otherwise apply this to the area to be leveled, then smooth over. As a thickness gauge, a wooden bar is secured along the edge of the formliner at the required thickness. Apply RECKLI Mould Wax to the bar in advance to avoid it sticking to the adhesive or spackling paste. Once the adhesive or spackling paste has hardened, the edges of the formliner will be the same size and the formliner fully functional.

Watch our application video to learn more about handling, leveling or repairing formliners. The video provides step-by-step instructions and practical guidance to ensure proper installation and optimal surface results.