Koster Pile Cap Waterproofing System

The waterproofing of pile heads has to withstand heavy loads from the whole building and needs be easily and structurally connected to the area waterproofing.

This system contains the following components:

• Primer: Koster Polysil TG500
• Re-profiling mortar: Koster Repair Mortar Plus.
• Waterproofing of pile heads: Koster NB 1 Grey.
• Waterproofing layer: Koster Deuxan® 2C.
• Embedded mesh: Koster Glass Fibre Mesh.

Following preparation to remove any de-bonding materials or loose/damaged concrete, prime the concrete pile head using Koster Polysil TG500. Once the primer has cured, the surface has to be leveled and re-profiled with Koster Repair Mortar Plus.

Koster NB 1 Grey is then used to waterproof the pile head. Brushed over the smooth pile head, and onto the surrounding blinding layer then left to cure.

The waterproofing on top of the blinding layer is made with Koster Deuxan 2C. This is applied in two coats with Koster Glass Fibre Mesh laid into the fresh first layer. Before pouring the concrete for the floor slab a gliding layer consisting of two layers of customary PE-Foil is applied between the waterproofing and the concrete - acting as a slip layer. Protect the waterproofing layer from mechanical damage when continuing with the application.

Please contact the Koster Technical team with any questions or for specific design advice - technical@kosteruk.com.