Discover the 50mm Unilin XO/PR Pitched Roof Insulation solution designed for sloped roofs. This advanced system delivers excellent U-Values whilst preserving your home's usable space. Roofing is critical to building performance, and heat loss through poorly insulated roofs can be substantial. Installing 50mm XO/PR Pitched Roof Board significantly reduces heat escape and provides outstanding thermal bridging performance.
For complex roof designs with multiple slopes, the Warm Roof construction technique is highly effective. This method involves placing insulation above, or both above and between, the roof timbers. This keeps your building's structural elements at temperatures closer to your interior, reducing thermal stress and condensation problems.
Brand: Unilin®
Model: 50mm Unilin XO/PR Roof Board
Thickness: 50mm
Length: 2400mm
Width: 1200mm
Dimensions: 2,400mm x 1,200mm x 50mm
Pack Coverage: 17.28m2
Pack Quantity: Pack of 6
Pack Weight: 30kg
Compressive Strength: 150 (kPa)
Material: PIR (polyisocyanurate)
Profile: Square Edge
R-Value: 2.35m2K/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 the rest of the structure. These instances fall into 'Repeating,' 'Random,' or 'Non-Repeating' categories.
Thermal bridges are measured using linear thermal transmittance—expressed as PSI (Ψ) in W/mK. The SAP software program calculates a building's energy efficiency rating 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 quotations, contact us on +4402038839057, email sales@insulationbee or use Live Chat—we offer competitive UK Insulation board prices.








