Kingspan Thermawall TW50 | PIR Cavity Wall Insulation | 1200mm x 450mm | All Sizes

KingspanSKU: IUK00962

Sale price£46.74 

inc VAT

Pay in 3 prices shown are an example only. Total calculated at checkout.

Delivery within 5 - 7 working days

Free Delivery On Orders
Over £599.95 Ex-Vat

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Contact us on 0300 303 4578
or email here!

Kingspan Thermawall TW50 is a high performance partial fill cavity wall insulation, offering unparalleled thermal efficiency with a conductivity of just 0.022 W/mK.

Designed for ease of use, these high-performance rigid thermoset polyisocyanurate (PIR) insulation boards are not only simple to cut and handle but also come in a variety of thicknesses to suit your specific insulation needs.

Key Features and Advantages:

  • Superior Thermal Efficiency: Stands among the top cavity wall insulation options, providing significant energy savings and enhancing building comfort.
  • Moisture Resistance: Maintains a clear cavity, effectively resisting moisture penetration and ensuring long-term durability and protection.
  • Enhanced Thermal Resistance: Low emissivity foil facings on both sides significantly boost the cavity's thermal resistance, contributing to an overall improvement in building energy performance.
  • NHBC Compliant: Meets the National House Building Council (NHBC) technical requirements when installed with a 50 mm residual cavity, ensuring compliance with construction standards.
  • Versatile Installation: Easily tailored to fit around awkward details, making it suitable for a wide range of construction projects.


Ideal for partial fill cavity wall insulation, Thermawall TW50 is a versatile solution that can be used in both new build projects and refurbishments to achieve exceptional energy efficiency and meet stringent building regulations.

Technical Specifications:

  • Material: High-performance rigid thermoset polyisocyanurate (PIR) insulation for optimal insulation performance.
  • Thermal Conductivity: Boasts a low thermal conductivity of 0.022 W/mK, ensuring superior insulation efficiency.
  • Facings: Features low emissivity composite foil facings on both sides, autohesively bonded to enhance thermal resistance.
  • Dimensions: Available in standard widths of 450 mm and lengths of 1200 mm, with thicknesses ranging from 40 to 100 mm, accommodating diverse construction requirements.
  • Fire Performance: Holds a Euroclass F rating under System 4 AVCP, adhering to safety standards.
  • Compressive Strength: Exhibits a compressive strength exceeding 140 kPa at 10% compression, demonstrating durability and resilience.


Choose Kingspan Thermawall TW50 for your next construction project to benefit from its advanced insulation properties. With TW50, you're not just insulating your building; you're investing in energy efficiency, moisture resistance, and compliance, ensuring a safer, more comfortable environment for occupants.


Kingspan Thermawall TW50 Cavity Wall Insulation Brochure


Order Value Delivery Charge
Up to £200.00 ex-vat £100.00 ex-vat
£200.00 - £599.95 ex-vat £59.95 ex-vat
Above £599.95 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: 0300 303 4578 | Email:


Delivery charges will automatically be calculated within the checkout process.
Orders are only processed for delivery between 8.00am - 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.

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