100mm Unilin Xtroliner XO/SK Warm Roof Board

The 100mm Unilin Xtroliner XO/SK Warm Roof Board (Tongue & Groove) is a thoughtfully engineered external roof insulation solution with robust facings that lock together securely. This product delivers an impressive passive U-value of 0.15 W/m²K. Choosing 100mm XO/SK roof insulation brings noticeable improvements to building details, faster fitting times, and a uniform base for better construction detailing.

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

Product Details

Brand: Unilin®

Model: 100mm Xtroliner XO/SK T&G Warm Roof

Thickness: 100mm

Dimensions: 2,400mm x 1,200mm x 100mm

Width: 1200mm

Length: 2400mm

Pack Quantity: 4 sheets

Pack Coverage: 11.52m2

Material: PIR Insulation (polyisocyanurate)

Profile: Tongue and Groove

R-Value:4.75m2K/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 small areas where insulation thickness drops noticeably compared to the rest of the structure. These situations fall into 'Repeating,' 'Random,' or 'Non-Repeating' categories.

How is Thermal Bridging Quantified?

Thermal bridges are measured using linear thermal transmittance – known as PSI (Ψ) and shown in W/mK. When calculating a home's energy performance, SAP software is used, which includes thermal bridging assessment at junctions shown as a 'Y-Value.'

Good detailing delivers benefits

1. Less chance of condensation and mould forming at poorly detailed junctions.
2. More energy efficient building with lower running costs.
3. A more cost effective method of achieving a low energy building.

Guidelines for Handling, Cutting, and Storage

1. Store Unilin 100mm PIR insulation board on a clean, level surface away from the ground in a sheltered location.
2. Polythene wrapping alone won't protect the boards from outdoor weather.
3. Protect your insulation during storage and throughout the building process.
4. Always use appropriate Personal Protective Equipment (PPE) when handling insulation products.

Info

Browse our full range of Unilin stock and narrow down by thickness or coverage using the filters on the left. For advice on product suitability for your project or to request a bulk discount quote, contact us on +4402038839057, email sales@insulationbee, or use Live Chat – we offer competitive insulation board pricing across the UK.