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  • Pitched Roof Insulation
  • Insulation King

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  • Free Standard Delivery (over £500)
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 (   Ex. VAT) £18.00
 - £67.62
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🚛 Next Day Delivery (West Midlands) – FREE on orders over £500

Xtratherm Insulation Boards are a high-performance insulation solution designed to provide optimal thermal comfort and long-lasting energy efficiency.  

Crafted with advanced foam technology, this foil faced Polyisocyanurate (PIR) insulation boasts superior thermal conductivity and low thermal drift, ensuring lower heat loss and a warm, comfortable environment. Xtratherm is ideal for use in floors, roofs, and walls, and offers exceptional moisture resistance and vapour control. This makes it an ideal choice for upgrading your building's insulation, creating a healthier indoor air quality and reduced energy costs. 

Sizes: (thickness) 

  • 25 mm  
  • 50 mm  
  • 75 mm  
  • 100 mm  
  • 120 mm  
  • 150 mm 


  • Low emissivity foil facings  
  • Versatile use  
  • Long-lasting energy efficiency  
  • Low thermal drift  
  • Moisture resistance with vapour control  
  • Thermal conductivity: 0.022 W/mK 
  • BBA certified  
  • A1 fire class rating  

DISCLAIMER: Please make sure this product meets fire safety regulations for your project. 

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Frequently Asked Questions

Free shipping will automatically be applied to all orders over £500. Simply add over £500 to your cart and you will see the discount while checking out.

Orders under £150 - £100 carriage.
Under £300 - £50 charge.
Under £500 - £25 charge.
Over £500 is free.

We typically deliver orders within 2-3 business days of ordering.

Orders for the West Midlands will be completed in 1 to 2 working days.

Orders for areas out of the West Midlands will be completed in 3 to 4 working days.

Orders made after 5pm will be processed on the following working day.

Our deliveries are typically made between 8am and 5pm, Monday - Friday excluding Bank Holidays (Great Britain).

We are unable to offer timed deliveries.

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