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66mm Xtroliner XO/STP Soffit+ Insulation Board (pack of 18)
66mm Xtroliner XO/STP Soffit+ Insulation Board (pack of 18)

66mm Xtroliner XO/STP Soffit+ Insulation Board (pack of 18)

  • SIP Panels
  • Insulation King

  • Free Next Day Delivery (over £500) in the West Midlands
  • Free Standard Delivery (over £500)
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🚛 Next Day Delivery (West Midlands) – FREE on orders over £500

The 66mm Unilin XO/STP XtroLiner Soffit+ Insulation Board is a high-performance structural ceiling insulation solution designed to deliver excellent thermal efficiency and fire performance in commercial and residential buildings. Manufactured from polyisocyanurate (PIR) rigid foam insulation, this soffit board provides outstanding insulation performance while helping improve the overall energy efficiency of structural ceiling systems.

With a low thermal conductivity of 0.021 W/mK and an R-value of 2.85m²K/W, the XtroLiner Soffit+ delivers enhanced thermal resistance within a compact thickness. The board features a durable 6mm impact-resistant building panel finish, providing a suitable surface for decorative finishes where required. The foil-faced design improves vapour resistance and contributes to the board’s high-performance insulation properties.

Offering a Euroclass B, s1-d0 fire classification and BBA certification (No. 12/4956), this insulation board provides a reliable thermal and fire performance solution for structural ceiling applications. Suitable for installation with timber battens or direct fixing to concrete, the Unilin XO/STP XtroLiner Soffit+ is an effective choice for demanding 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 2.85m²K/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 for improved insulation and vapour resistance
  • 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: 66mm
  • Coverage: 2.88m² per sheet
  • Pack Quantity: 18 sheets
  • Total Pack Coverage: 51.84m²
  • Material: Polyisocyanurate (PIR) rigid foam
  • Finish: 6mm building panel with foil-faced surface
  • Profile: Square Edge
  • Weight: Approx. 432kg 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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