Polystyrene Disc - KS (white/grey) - Pack of 100

What is a KS Polystyrene Disc?

A KS Polystyrene Disc is a lightweight EPS cap designed to cover recessed façade fixings in External Wall Insulation (EWI) systems. When used together with a cutter (such as the Wkręt‑met WK‑FT), the disc is inserted into the recess to eliminate thermal bridging, improve façade flatness, and prepare the surface for basecoat and mesh.

According to the Renderstore listing, KS discs are available in white or grey EPS and supplied in packs of 100. They are widely used in EPS insulation systems to ensure a smooth, thermally efficient finish.

Key Features

• Reduces thermal bridging by covering recessed fixings

• Improves façade flatness before basecoat application

• Compatible with EPS insulation systems

• Lightweight and easy to install

• Available in white or grey EPS

• Supplied in packs of 100 for efficient site use

• Ideal for use with WK‑FT cutters and EWI fixings

Technical Specification

Application Checklist

1. Cut a recess using a compatible cutter (e.g., WK‑FT).

2. Install the façade fixing into the recessed hole.

3. Insert the KS disc flush with the insulation surface.

4. Apply basecoat and mesh over the prepared area.

5. Finish with render for a smooth, uniform façade.

Where to Use KS Discs

• EPS External Wall Insulation systems

• Graphite EPS insulation

• Recessed fixing installations

• Thermal bridge reduction

• Façade preparation before basecoat

Why Installers Choose KS Discs

KS discs are a simple but essential component for achieving:

• Better thermal performance

• Cleaner façade surfaces

• Reduced fixing visibility

• Improved long‑term system durability

They’re a small detail that makes a big difference