EPS Thermo Dowel Caps (100 pieces)

Brand: Wkret-Met
SKU: WKR-KSG100
£5.99 Incl. VAT
£5.99 Incl. VAT (regular price)
Please note: This product has a slightly longer lead time. Our team wiil notify you with an estimated delivery date.

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    Boost the performance of your External Wall Insulation (EWI) by reducing thermal bridging at fixing points. These caps are made from graphite-enhanced polystyrene and sit flush with EPS insulation boards to maintain thermal continuity and deliver a smooth, render-ready surface. For fast, consistent recesses, use in conjunction with the Plastic EPS Router .

    Key benefits

    • Minimises thermal bridges around mechanical fixings
    • Helps improve overall thermal efficiency and reduce cold spots
    • Flush-fit for an even surface before basecoat and finish
    • Quick, accurate recess creation when paired with the Plastic EPS Router
    • Suitable for both retrofit and new build EWI systems

    Technical Data

    Property Value
    Material Graphite EPS (expanded polystyrene)
    Diameter 67 mm
    Thickness 17 mm
    Dimensions Ø67 × 17 mm
    Recommended recess (cut-out) 20 mm (for flush installation)
    Thermal conductivity (λ) 0.031 W/m·K
    Compatibility EPS insulation boards
    Pack size 100 pieces
    Tool pairing Use with Plastic EPS Router

    Application

    1. After installing insulation dowels, route a 20 mm recess over each fixing using the Plastic EPS Router.
    2. Press the cap into the recess so it sits level with the board surface.
    3. Check the plane is even before applying basecoat, mesh, primer and finish.

    Frequently Asked Questions

    EPS Thermo Dowel Caps are used to minimise thermal bridging when mechanical fixings are installed into EPS insulation boards. They help maintain thermal efficiency across the insulation system.

    These caps cover dowel heads to prevent heat loss through fixing points. By reducing thermal bridges they help achieve a more continuous thermal layer and improve overall energy performance.

    Each box contains 100 EPS Thermo Dowel Caps.

    The heat transfer coefficient of the caps is 0.031 W per sqm. This ensures strong thermal efficiency when used as part of an external wall insulation system.

    Yes these caps are compatible with standard EPS insulation boards used in external wall insulation systems. They are designed to fit most mechanical fixings used for EPS installations.

    Yes the caps sit flush within the insulation board thanks to the 20mm cutout. This ensures a consistent surface ready for basecoat and render.

    While not mandatory they are highly recommended to avoid cold bridging and support long-term thermal performance in external wall insulation systems.

    No, these caps are designed specifically for EPS insulation. Mineral wool insulation requires alternative solutions due to its different structure and fixing requirements

    Reviews & Ratings

    Overall rating

    3.5
    ★ ★ ★ ★ ★
    2 reviews
    5 stars
    1
    4 stars
    0
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    0
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    Have something to say?

    Rate EPS Thermo Dowel Caps (100 pieces)

    Matt

    ★ ★ ★ ★ ★ 5
    14.12.2025
    Cold bridging sorted. They fit flush and make the render prep easy. Brill bit of kit.

    Rafal

    ★ ★ ★ ★ ★ 2
    27.09.2025
    graphite caps are sound in theory but poor tolerance meant half wouldn't drop true even with the recommended router. ended up having to chisel the bore out again making the job twice as long. waste of site time.

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