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81mm XO/STP Soffit Plus PIR Insulation Board (pack of 15)
81mm XO/STP Soffit Plus PIR Insulation Board (pack of 15)

81mm XO/STP Soffit Plus PIR Insulation Board (pack of 15)

  • SIP Panels
  • Insulation King

  • Free Next Day Delivery (over £500) in the West Midlands
  • Free Standard Delivery (over £500)
  • View our guides for Help & Advice
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🚛 Next Day Delivery (West Midlands) – FREE on orders over £500

The 81mm Unilin XO/STP XtroLiner Soffit+ PIR Insulation Board is a high-performance structural ceiling insulation solution designed to provide excellent thermal efficiency, fire protection, and durability for commercial and residential buildings. Manufactured from polyisocyanurate (PIR) rigid foam insulation, this advanced soffit board delivers reliable insulation performance for structural ceiling applications.

With a low thermal conductivity of 0.021 W/mK and an R-value of 3.55m²K/W, the XtroLiner Soffit+ provides enhanced thermal resistance while maintaining a slim board thickness. The insulation board features a durable 6mm impact-resistant building panel finish, allowing decorative finishes to be applied where required. Its foil-faced surface improves vapour resistance and supports long-term insulation performance.

Offering a Euroclass B, s1-d0 fire classification and BBA certification (No. 12/4956), this soffit insulation board provides an effective thermal and fire performance solution for structural ceiling systems. Suitable for fixing with timber battens or directly to concrete, the 81mm XtroLiner Soffit+ is ideal for high-performance insulation projects.

Key Features

  • High-performance PIR rigid foam structural ceiling insulation
  • Designed for commercial and residential structural ceiling applications
  • Excellent thermal performance with R-value of 3.55m²K/W
  • Low thermal conductivity of 0.021 W/mK
  • Fire classification: Euroclass B, s1-d0
  • Features a durable 6mm impact-resistant building panel
  • Foil-faced surface improves vapour resistance and insulation performance
  • Suitable for decorative finishing applications
  • BBA Certified (No. 12/4956)
  • Provides effective thermal and fire performance solution
  • Suitable for fixing with timber battens or directly to concrete

Dimensions & Pack Size

  • Board Size: 2400mm x 1200mm
  • Overall Thickness: 81mm
  • Coverage: 2.88m² per sheet
  • Pack Quantity: 15 sheets
  • Total Pack Coverage: 43.20m²
  • Material: Polyisocyanurate (PIR) rigid foam
  • Finish: 6mm building panel with foil-faced surface
  • Profile: Square Edge
  • Weight: Approx. 390kg per pack

DELIVERY INFORMATION

  • FAST RELIABLE UK DELIVERY 
  • STANDARD DELIVERY - 1 TO 3 WORKING DAYS
  • FREE DELIVERY ON ORDERS OVER £500
  • PALLET DELIVERY AVAILABLE
  • NEED IT URGENTLY? CONTACT US FOR EXPRESS OPTIONS

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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 £500 - £50 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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