125mm Unilin Xtroliner XO/SK Warm Roof Board

125mm Unilin Xtroliner XO/SK Warm Roof Board (Tongue & Groove) is a professionally engineered roof insulation solution with interlocking facings that work together seamlessly. This product delivers an impressive passive U-value of 0.15 W/m²K. Choosing 125mm XO/SK roof insulation brings improved architectural detailing, faster installation times, and a uniform surface for superior workmanship.

A warm roof design substantially reduces the number of thermal weak points in your structure, which means your roof performs better thermally overall. The product carries a Euroclass C Fire Insulation Classification.

Product Details

Brand: Unilin®

Model: 125mm Xtroliner XO/SK T&G Warm Roof

Thickness: 125mm

Dimensions: 2,400mm x 1,200mm x 125mm

Width: 1200mm

Length: 2400mm

Pack Quantity: 4 sheets

Pack Coverage: 11.52m2

Material: PIR Insulation (polyisocyanurate)

Profile: Tongue and Groove

R-Value:5.95m2K/W

Thermal Conductivity: 0.021W/mK

Compressive Strength: >150 (kPa)

Type: Superior performance PIR for Warm Roof Construction

Fire Classification: Euroclass C-s2, d0

Finish: Robust Textured Foil

Shipping method: Articulated Vehicle ǀ Courier

Application: Pitched Roof Sarking

BBA Certified: Yes (no. 12/4956)

Vapour Control Layer: Incorporated

Inner facing: Foil Facing

Outer facing: Foil Facing

Features: Reduced Thermal Bridging

Key Points

1. Robust Tongue & Groove Jointing
2. Reduced Risk of Condensation
3. Avoids Intrusion into Living Area
4. Excellent U-value in roofs
5. Reduced Thermal Bridging

What constitutes Thermal Bridging?

Thermal Bridging occurs in specific areas where insulation performance drops noticeably compared to the rest of the building envelope. These can be classified as 'Repeating,' 'Random,' or 'Non-Repeating' occurrences.

How is Thermal Bridging Quantified?

Thermal bridges are measured using linear thermal transmittance, known as PSI (Ψ) and measured in W/mK. When assessing a building's energy performance, the SAP software programme evaluates thermal bridging at junctions, expressed as a 'Y-Value.'

Good detailing delivers benefits

1. Lower risk of condensation and mould at poorly detailed junctions.
2. More energy efficient building with reduced operating costs.
3. A more economical approach to achieving a low energy building.

Guidelines for Handling, Cutting, and Storage

1. Store Unilin 125mm PIR insulation board on a clean, level surface away from the ground in a sheltered location.
2. The polythene wrapping alone does not provide sufficient protection from weather exposure.
3. Protect the insulation during storage and throughout the building process.
4. Always wear appropriate Personal Protective Equipment (PPE) when handling insulation materials.

Info

Browse our full range of Unilin products and filter by thickness or coverage on the left side of the page. For advice on product suitability for your project or to request a quantity discount quotation, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Insulation board prices.