25mm Unilin Xtroliner XO/PR is a warm roof construction board, comprising a rigid foam modified Polyisocyanurate (PIR) core with robust textured low emissivity aluminium foil facings.

Using XO/PR used above or between the roof rafters ensures that the structure is kept at or near the internal environmental conditions, reducing thermal stress and condensation risk.

Xtroliner XO/PR is manufactured to EN 13165 by Unilin Insulation with a declared lambda (thermal conductivity) of 0.021 W/mK and Euroclass C s2 d0 fire classification.

XO/PR Pitched Roof when used on sloped roofs (ventilated, hybrid or warm) provides the most efficient U-Values with minimal intrusion into valuable living space.

The roof construction is a critical element in the building fabric and is an area at high risk of heat loss therefore should be properly insulated.

Using XtroLiner XO/PR Pitched Roof will reduce heat loss while also delivering excellent Thermal Bridging details.

Warm Roof Construction is a particularly effective way of insulating complex roofs.

Specification:

Thickness: 25mm

Width: 1200mm

Length: 2400mm

Size: 25mm x 1200mm x 2400mm

Pack Quantity: 12 sheets

Pack Coverage: 34.56m2

Board Coverage: 2.88m2

Profile: Square Edge

R-Value: 1.15 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 Xtroliner XO/PR Features:

 · Reduced thermal bridging.

 · Reduced risk of condensation.

 · Lightweight and easy to install.

 · Achieves most efficient U-values

 · Euroclass C s2 d0 fire classification.

 · Reduces intrusion into the living area.

 · Premium PIR warm roof construction.

 · High performance pitched roof board.

 · Reduces heat loss in roof construction.

 · Faced with robust aluminum foil facings.

 · Rigid foam modified Polyisocyanurate (PIR) core.

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

 · Used on ventilated, hybrid or warm and sloped roofs.

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

Unilin Xtroliner XO/PR Pitched Roof Installation Guidelines:

 · Ventilated Roof - Position and fix battens to the inner face of rafters, flush with the top edge of the timber.

 · Allow for ventilation gaps, normally 50mm, (May be reduced depending on breather membrane certification).

 · Cut boards with fine toothed saw to fit tightly between rafters, flush with the bottom of the rafter.

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

 · A second layer of insulation should be fixed to the underside of the rafter.

 · Run the second layer transverse to the first with joints tightly butted.

 · Fix with nails to hold insulation in place until plasterboard is installed.

 · Provide a separate vapour control layer between insulation and plasterboard or alternatively, tape the joints of the insulation with an aluminium foil tape.

 · 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.

 · Alternatively the second layer can be achieved with XT/TL-MF Unilin Thermal Liner.

 · Repeat steps 1 to 3 and replace the second layer with Thin-R Thermal Liner, a ready made PIR insulation board bonded to plasterboard.

 · Where joints between sheets of Thermal Liner are unsupported by the rafters, timber noggins should be installed.

 · Seal and tape the joints of the plasterboard in accordance with Standard Drylining Practice.

 · Hybrid Roof - Follow the same procedure as before except a breather membrane is used above the rafter allowing the 50mm ventilation space to be dispensed with.

 · Typically, a 25mm unventilated void should be maintained; BBA Agrément certification covering the membrane should be consulted.

 · Warm Roof - 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 XtroLiner Pitched Roof staggered jointed over the rafters.

 · Ensure joints are tightly butted and fill any gaps with expanding foam.

 · Joints should be fully supported by rafters.

 · Boards can be temporarily fixed with nails.

 · Fix 38mm x 50mm counter battens with approved fixings through the insulation board 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 BBA 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 counter batten and XtroLiner Pitched Roof to the rafter.

 · If an additional second layer is required, this should be fixed between the rafters.

 · Cut boards 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 between the bottom of the rafter and plasterboard.

 · 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.