50mm Unilin XO/SK XtroLiner Sarking (T&G) is an engineered tongue and grooved external roof insulation system with robust facings which meets the passive U-Value of 0.15 W/m2K.

The XtroLiner Sarking XO/SK offers a robust continuous layer of insulation, minimising the threat of Thermal Bridging and improving the overall U-Value of the roof.

Using Unilin Xtroliner XO/SK improves detailing, speeds up the installation process and provides a uniform plane to detail more effectively.

Creating a warm roof reduces the normal amount of junctions prone to Thermal Bridging, greatly improving the thermal performance of the roof.

Adding an additional layer of Unilin XO/PR between the counter battens minimises fixing length and improves the overall U-Value of the roof.

Creating a warm roof reduces the normal amount of junctions prone to thermal bridging greatly improving the thermal performance of the roof.

Unilin XO/SK Sarking Insulation Board has a Euroclass C Fire Classification and Compressive Strength of >150 (kPa).

Specification:

Thickness: 50mm

Width: 1200mm

Length: 2400mm

Size: 50mm x 1200mm x 2400mm

Pack Quantity: 6 sheets

Pack Coverage: 17.28m2

Board Coverage: 2.88m2

Profile: Tongue and Grooved

R-Value: 2.35 m2K/W

Density (Foam Core): 32kg/m3 

Thermal Conductivity: 0.021 W/mK

Compressive Strength: >150 (kPa)

Reaction to Fire: Euroclass C, s2-d0

Unilin XO/SK XtroLiner Sarking (T&G) Board Features:

 · Reduced thermal bridging.

 · Reduced risk of condensation.

 · Lightweight and easy to install.

 · Achieves most efficient U-values.

 · Meets the passive U-Value of 0.15 W/m2K.

 · Euroclass C s2 d0 fire classification.

 · Reduces heat loss in roof construction.

 · Faced with robust aluminum foil facings.

 · Improves detailing, speeds up the installation process.

 · Rigid foam modified Polyisocyanurate (PIR) core.

 · Compressive Strength >150kP (at 10% compression).

 · Declared lambda (thermal conductivity) of 0.021 W/mK.

 · Engineered tongue and grooved external roof insulation system.

Unilin Xtroliner XO/SK Sarking Warm Roof (T&G) Installation Guidelines:

 · Ensure cavity wall insulation has continued to roof height to meet with the roof insulation.

 · Fix a treated timber stop rail to the end of the rafter at the eaves.

 · Lay XO/SK over the rafters ensuring the tongued and grooved edges of the boards are fully engaged and positioned in a staggered pattern.

 · Joints should be fully supported by rafters.

 · Fill any gaps with expanding foam.

 · Use large headed clout nails to hold boards temporarily in place until they are secured by the counter battens.

 · Fix 38mm x 50mm counter battens with approved helical type fixings through the XO/SK into the rafter.

 · The amount of fixings is determined by the fixing manufacturer who can also provide wind load calculations.

 · A breathable sarking membrane should be fitted; refer to manufacturer’s Agrément certification.

 · Ventilation may have to be provided subject to that certification and minimises the risk of interstitial condensation forming on the underside of the membrane.

 · Providing an unventilated void under the membrane can improve thermal performance.

 · Secure 50mm x 25mm tiling battens through the counterbatten and XO/SK to the rafter.

 · If an additional layer of insulation is required, Xtroliner Pitched Roof can be fixed between the rafters.

 · Cut XO/PR with fine toothed saw to fit tightly between rafters, flush with the top of the rafter.

 · Allow slight oversize of cut to achieve ‘friction fit’ and seal any gaps with expanding foam.

 · Provide a separate vapour control layer to the warm side of the insulation.

 · Finish with plasterboard fixed with drylining screws.

 · Screw fix every 150mm, 12mm from edge of boards, ensuring a minimum 25mm penetration into the rafter or alternatively follow plasterboard manufacturer installations guidance.

*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

*Special Product - Non returnable cancelable.