Kingspan Thermabate Insulated Cavity Closer

KingspanSKU: IUK01793
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Kingspan Thermabate offers a specialised solution for achieving continuous insulation around window and door openings in masonry cavity walls.

Exclusively designed for use within England and Wales, this innovative product combines a uPVC extrusion with a high-performance, fibre-free rigid thermoset urethane (PUR) core to deliver unparalleled thermal efficiency and construction simplicity.

Key Features and Advantages:

  • Region-Specific Solution: Optimised for the building regulations and climatic conditions of England and Wales.
  • Continuous Insulation: Ensures a seamless insulated barrier around doors and windows, eliminating thermal bridges that can lead to energy loss.
  • Ease of Construction: The design of Thermabate removes the need for cut bricks, blocks, or specialised reveal blocks, streamlining the construction process.
  • Reduced Heat Transfer: Effectively inhibits thermal bridging, lowering the risk of condensation and mould growth within the building envelope.
  • Weather Resistance: Acts as an integral damp-proof course (DPC), protecting against water ingress.
  • Integration Capability: Can be easily fitted alongside door and window frames as a combined unit, ensuring a tight and efficient seal.


Kingspan Thermabate is the ideal insulated cavity closer for closing cavities around masonry wall openings, providing a robust solution for enhancing the thermal performance and weather resistance of new and existing buildings.

Technical Specifications:

  • Material: A sophisticated cavity closer box section that incorporates a uPVC extrusion with a fibre-free rigid thermoset urethane insulation core.
  • Thermal Conductivity: Features a thermal conductivity of 0.034 W/mK, indicating high insulation performance.
  • Dimensions: Available in a standard length of 3,000 mm, with single flange widths of 100 mm, and twin flange widths of 110, 125, 140, and 150 mm, catering to a wide range of construction needs.

Kingspan Thermabate is designed to meet the specific requirements of the construction industry in England and Wales, offering a straightforward, efficient method for maintaining continuous insulation around window and door openings.

By reducing thermal bridging and enhancing the overall insulation performance of buildings, Thermabate is an essential component for any construction or refurbishment project looking to achieve higher energy efficiency standards.


Kingspan Thermabate Insulated Cavity Closer Brochure

Order Value Delivery Charge
Up to £200.00 ex-vat £75.00 ex-vat
£200.00 - £499.95 ex-vat £55.00 ex-vat
Above £499.95 ex-vat Free Delivery


 Jablite Products Delivery Charge
Order Value Delivery Charge
£80.00 - £500.00 ex vat £59.95
Above £500+ ex vat Free Delivery


Weekend Delivery
Available upon request


Parcel Rates
Delivery charge may vary depending on quantity and volume of your order.
Pricing will be calculated during checkout.


Local Delivery Charge
Within 35 miles of Postcode S63 9BL - Up to £500.00 ex-vat
Delivery Charge £35.00 ex-vat
Please contact us to arrange collections
Tel: 03300 55 32 02 | Email:


  • Delivery charges will automatically be calculated within the checkout process.
  • Orders are only processed for delivery between 8.30am - 5.00pm Monday to Friday excluding bank holidays.
  • Moffett offload will be used for large bulky deliveries and only when agreed with you.
  • Please advise of any access issues on ordering.
  • Delivery is Kerbside only.
  • In the unlikely event that your delivery is not correct or damaged please notify us immediately and mark any issues on the delivery slip.


    Where We Deliver

    Delivery Areas

    We have a fleet of FORS delivery vehicles all with Moffett mechanical off loads that deliver nationwide. Sometimes we may use 3rd party carriers for smaller orders.


      Product Delivery Times

      • The vast majority of our orders are dispatched within 3 working days, this can however be up to 5 working days, please contact us if you require something urgent.
      • Speciality items may take up to 5-7 working days.
      • We will contact you with in 24/48hrs of your order been placed to confirm delivery times and dates.

      Enter the width(m) and length(m) of your project below:

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