Surface sealing of bored pile walls

Separation Layers for Bored Pile Walls and Combined Waterproofing with Zemseal^®
Using separation layers in front of bored pile formwork offers several advantages: it allows for more precise alignment of subsequent basement walls and reduces concrete consumption. In contrast to inaccurately installed bored piles, the separation layer provides a solid base for exact and cost-effective construction.

If an area waterproofing system is required for higher usage classifications, the Zemseal^® fresh concrete composite membrane is applied. It is installed directly onto the smooth surface of the Pecafil^® separation layer. This eliminates the need for later crack injection, especially in areas that will no longer be accessible once construction is complete.

• Apply the Pecafil^® sheets to the bored pile wall and secure with a nail gun or by using dowels.
• Pre-fold the Zemseal^® membrane for corner installation later on. After concreting the base slab, the Zemseal^® sheeting should protrude approx. 500 mm upwards for easier connection.
• Position the prepared Zemseal^® corner profile, followed by the surface sealing for the floor, on the blinding layer.
• Concrete the floor slab. Ensure that Fradiflex^® metal water stop is installed in the construction joint between the floor slab and the wall.
• Attach pre-cut Zemseal^® sheets in strips with Zemseal^® adhesive tape (50 mm). Gluing with vertical strips can be done at intervals of approx. 1000 mm (gluing on the protruding wire of the Pecafil^® mats).
• Reinforce wall, position wall formwork and concrete wall.