Menu
Menu
Your Cart

25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12

25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12
25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12
25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12
25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12
25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12
  • Product Code: A1-5011
  • Delivery Time: 1-3 working days
  • Brand: Unilin (prev. Xtratherm)
  • Model and Size: 1200x2400mm - 34.56m2
Our ratings on 17-04-2025:
TrustPilot Review 4.7
4.7 out of 5 - Excellent
Google My Business Reviews
4.8 out of 5
Show other thicknesses

25mm Unilin XtroLiner XO/PR Pitched Roof PIR Insulation Board - 1200mm x 2400mm - Pack of 12

Length: 2400mm
Width: 1200mm
Thickness: 25mm
Pack Quantity: 12
Board Coverage: 2.88m2
Pack coverage: 34.56m2
Thermal Conductivity: 0.021W/mK
R-Value: 1.15m2K/W
Compressive Strength: 150kPa

25mm Unilin XtroLiner XO/PR board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. Unilin XtroLiner XO/PR board offers excellent insulation performance with excellent thermal conductivity. Unilin XtroLiner XO/PR is CFC & HCFC free and is manufactured under the highest standards of ISO 9001 and 14001 Quality and Environmental Management Systems. 

Note: This product was formerly known as 25mm Xtratherm XtroLiner XO/PR Pitched Roof PIR Insulation Board

CHARACTERISTICS

  • High Thermal Performance Rigid Insulation,
  • Easy to Install,
  • Non-deleterious material,
  • Suitable for new build and refurbishment,
  • Manufactured with zero ODP blowing agent,
  • Reduces Thermal Bridging, 
  • Reaction to fire: Euroclass C s2 d0,
  • Closed cell structure – moisture resistant

APPLICATION

  • Pitched roof
  • Ventilated roof
  • Warm roof
  • Above and between rafters
  • Under rafters, above ceilings
    

INSTALLATION

Ventilated Roofs

  • Allow for ventilation gaps normally 50mm. (May be reduced depending on breather membrane certification).
  • Cut XtroLiner boards to fit tightly between rafters flush with rafter bottom. An additional 2nd layer should be added to the underside of the rafter.
  • Run second layer transverse to the first.
  • Temporarily fix with nails.
  • Provide vapour control layer (Aluminium tape joints).
  • Finish with 12.5mm plasterboard fixed with drylining screws. Screw fix every 150mm, 12mm from edge of boards.
  • All board edges should be supported.

Warm roofs

  • Ensure cavity wall insulation has continued to roof height to engage with roof insulation.  
  • Fix a timber stop rail to end of rafter at eaves.
  • Lay Unilin XtrolinerXO/PR insulation stagger jointed over rafters ensuring joints are supported by rafters.
  • Ensure boards are tightly butted fill any gaps with expanding foam. A vapour permeable underlay should be fitted; refer to manufacturers Agrèment certification.
  • Providing an unvented void under the membrane can improve the thermal performance.
  • Fix counter batten with approved fixings.
  • Ventilation may have to be provided  subject to certification.
  • A second layer of insulation may be added between the rafters.
  • Provide a vapour control layer to the underside of the construction.
  • Current Building Regulations/Standards should be considered with regard to  the requirements for and/or provision  of fire stops.
CERTIFICATION

      

110mm Unilin FR/MG Flat Roof Board - pack of 4 110mm Unilin FR/MG Flat Roof Board - pack of 4
Guide Price
Brand: Unilin (prev. Xtratherm) Model and Size: 1200mm x 1200mm - 5.76m2
Delivery Time: 3 - 5 days
110mm Unilin FR/MG is a high performance PIR core with mineral coated glass facers suitable for use below single ply waterproofing systems and partially bonded built-up felt. It is compatible with adhesively bonded single ply roofing membranes laid on mechanically fixed ..
Guide Price: £134.70
£161.64 inc VAT
Get Best Price
52.5mm Unilin Thin-R Thermal Liner XT/TL-MF - Mech Fix (40mm PIR Insulation bonded to 12.5mm Plasterboard) 52.5mm Unilin Thin-R Thermal Liner XT/TL-MF - Mech Fix (40mm PIR Insulation bonded to 12.5mm Plasterboard)
Guide Price
Brand: Unilin (prev. Xtratherm) Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
52.5mm Unilin Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 25mm Unilin PIR core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. Unilin XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in one oper..
Guide Price: £59.86
£71.83 inc VAT
Get Best Price
160mm Unilin FR-BGM Flat Roof Insulation Board (pack of 3)
Guide Price
Brand: Unilin (prev. Xtratherm) Model and Size: 1200mm x 1200mm - 5.76m2
Delivery Time: 3 - 5 days
160mm Unilin FR-BGM is a BBA certified high performance PIR insulation board that is faced with a fleece finished bitumen/glass facers and is suitable for use below partially bonded bitumen based built up roofing systems. Unilin FR-BGM is suitable to apply torch on felt directly on the insulation. F..
Guide Price: £148.66
£178.39 inc VAT
Get Best Price
Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 11.52m2
Delivery Time: 2 - 3 working days
75mm Unilin Safe-R SR/UF Phenolic foam is a superior performance rigid underfloor insulation with enhanced fire performance, consisting of an Euroclass D s1 d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/UF is faced with low emissivity aluminium facings both sides, and has..
Get Best Price
Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 8.64m2
Delivery Time: 1-3 working days
125mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board is a flat roof insulation with enhanced vapour resistant performance. Unilin Thin-R FR/ALU board is faced with low emissivity aluminium facings both sides. Rot proof and will remain effective for the life span of the building. Unilin Thin-R F..
Get Best Price
Brand: Unilin (prev. Xtratherm) Model and Size: 1250x600mm - 2.25m2
Delivery Time: 2 - 3 working days
120mm Unilin XPS 300 is an extremely durable heavy duty thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It has a rebated edge.CHARACTERISTICSExtremely strong,Compressive..
Get Best Price
This product is listed in the following categories and systems (click to show).