RAWLPLUG EPS 63 mm Polystyrene Plug / Cap R-TFIX-CAP63-EPS-W, white, pack of 100

RAWLPLUG EPS 63 mm Polystyrene Plug (white, pack of 100) is a thermally inert cap designed to cover and protect insulation anchors and dowels in EPS external and internal thermal insulation systems. The plug has a 63 mm diameter sized to fit common insulation fixing heads and provides a flush, uniform finish that reduces moisture ingress around fastenings and improves the appearance of insulation surfaces.

Advantages

The polystyrene material is lightweight and compatible with expanded polystyrene (EPS) boards, helping to maintain thermal performance by minimising thermal bridging at fixing points. The white colour offers a neutral, consistent finish that can be painted or rendered over. Supplied in a pack of 100, the plugs enable efficient installation for larger areas and replacement of damaged caps without the need for additional components.

Suitable for

• Covering and protecting insulation anchors and dowels in EPS board installations
• External and internal thermal insulation systems using expanded polystyrene
• Situations requiring a flush, paintable finish over fixings
• Maintenance and repair of insulation fixings on façades and interior walls

Key specifications

• Material: Expanded polystyrene (EPS)
• Colour: White
• Nominal outer diameter: 63 mm
• Pack quantity: 100 pieces
• Function: Protective cap for insulation fixings to reduce moisture ingress and provide a uniform finish

How to use

After installing and securing the insulation anchors or dowels according to the insulation system manufacturer’s instructions, press the polystyrene plug over the fixing head until it sits flush with the insulation surface. Ensure the plug fully covers the fixing to limit exposure to moisture. Where required, apply a thin coat of suitable render or paint over the cap once the substrate preparation and adhesive or render layers are ready, following the finishing material manufacturer’s instructions.

Usage recommendations

Store the plugs in a dry, shaded area prior to application and avoid exposure to direct solvents or high temperatures that can deform EPS. Confirm compatibility of paints or renders with EPS before final coating. For critical weatherproofing or load-bearing fixings consult the insulation system manufacturer to ensure the chosen cap type and installation method meet local regulations and performance requirements.