Discover the 70mm Unilin XO/PR Pitched Roof Insulation solution, engineered for sloped roofs. This advanced system delivers outstanding thermal performance whilst preserving your interior space. Roof construction significantly impacts building efficiency, with heat loss being a major concern. Installing 70mm XO/PR Pitched Roof Board substantially reduces heat escape and provides excellent control of thermal bridging.
For complex roof designs with multiple slopes, the Warm Roof construction method proves highly effective. This technique involves placing insulation above or between the roof timbers. This keeps the building structure aligned with internal conditions, reducing thermal stress and condensation problems.
Brand: Unilin®
Model: 70mm Unilin XO/PR Roof Board
Thickness: 70mm
Length: 2400mm
Width: 1200mm
Dimensions: 2,400mm x 1,200mm x 70mm
Pack Coverage: 11.52m2
Pack Quantity: Pack of 4
Pack Weight: 28kg
Compressive Strength: 150 (kPa)
Material: PIR (polyisocyanurate)
Profile: Square Edge
R-Value: 3.30m2K/W
Thermal Conductivity: 0.021W/mK
Fire Classification: Euroclass C-s2, d0
Building Regulations: Compatible
Finish: Robust textured foil
Inner facing: Foil Facing
Outer facing: Foil Facing
Type: Superior performance PIR pitched roof board
Shipping method: Articulated Vehicle ǀ Courier
Applications: Pitched roof insulation, sloped, ventilated, hybrid, warm roofs
BBA Certified: Yes (no. 12/4956)
Vapour Control Layer: Yes
Features: Improved Performance ǀ Reduce Heat Loss
Thermal bridging occurs in specific areas where insulation performance drops noticeably compared to surrounding sections. These can be classified as 'Repeating,' 'Random,' or 'Non-Repeating' occurrences.
Thermal bridges are measured using linear thermal transmittance, expressed as PSI (Ψ) in W/mK. The SAP software programme calculates building energy ratings and includes thermal bridging assessment at junctions, shown as a 'Y-Value.'
Browse our Unilin range and filter by thickness or coverage on the left side. For product suitability advice or bulk pricing, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Insulation board prices.








