Unilin Thin-R XT/PR-UF


High performance rigid Polyisocyanurate (PIR) general application insulation board

Suitable for use in roof and ground floor applications, including underfloor heating applications.

Helps meet the requirements of Approved Document L and Section 6.

Includes low emissivity composite foil facings giving improved thermal insulation performance within cavity air spaces.

Can be used to provide reliable long-term energy savings for buildings.

BBA certified.

Thicknesses and Availability:

Good availability for delivery to London; short lead-times may apply if we need to get stock in before delivering to site.

This XT/PR-UF Range includes the following available product thicknesses: 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm and 150mm.


Product options


Availability Indicators

Unilin Thin-R XT/PR-UF is available for delivery within the London, M25 area only and is subject to the Unilin Insulation minimum order levels and delivery charge thresholds.

Reasonable stock levels are held of the popular thicknesses, where products need to be brought in from Unilin, please allow approx. 1 week for delivery.

  • Generally 1 to 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Delivery charges will be calculated at check-out. Please visit our Ordering From Us page for further details on minimum order levels and delivery charges. If you have any queries, please do not hesitate to contact me via our Contact Form or on 01903 899 898.

Product Application

Roof and/or floor application insulating board

Unilins high performance polyisocyanurate (PIR) foam board, Thin-R XT/PR-UF, is suitable for use in pitched roof and ground floor applications, including beam and block, solid and suspended ground floor.

Product Make-up

Core: Unilin XT/PR-UF is manufactured from rigid polyisocyanurate modified polyurethane foam boards.

Facings: Faced on both sides with a low emissivity composite aluminium foil, autohesively bonded to the insulation core during manufacture.

Product Properties

Thickness15mm to 150mm

Product Performance

Thermal Conductivity0.022 W/mK 
Compressive Strength150 kPa at 10% compressionBS EN 826
Vapour Resistance> 300 MNs/gm 

Product Variants

ProductThicknessThermal Resistancekg/m²
Unilin XT/PR-UF15 mm0.65 m²K/W0.78 kg/m²
Unilin XT/PR-UF20 mm0.90 m²K/W0.85 kg/m²
Unilin XT/PR-UF25 mm1.10 m²K/W0.98 kg/m²
Unilin XT/PR-UF30 mm1.35 m²K/W1.23 kg/m²
Unilin XT/PR-UF40 mm1.80 m²K/W1.42 kg/m²
Unilin XT/PR-UF50 mm2.25 m²K/W1.71 kg/m²
Unilin XT/PR-UF60 mm2.70 m²K/W2.02 kg/m²
Unilin XT/PR-UF70 mm3.15 m²K/W2.42 kg/m²
Unilin XT/PR-UF75 mm3.40 m²K/W2.53 kg/m²
Unilin XT/PR-UF80 mm3.60 m²K/W2.60 kg/m²
Unilin XT/PR-UF90 mm4.05 m²K/W2.99 kg/m²
Unilin XT/PR-UF100 mm4.50 m²K/W3.26 kg/m²
Unilin XT/PR-UF110 mm5.00 m²K/W3.56 kg/m²
Unilin XT/PR-UF120 mm5.45 m²K/W3.87 kg/m²
Unilin XT/PR-UF130 mm5.90 m²K/W4.32 kg/m²
Unilin XT/PR-UF140 mm6.35 m²K/W4.61 kg/m²
Unilin XT/PR-UF150 mm6.80 m²K/W4.76 kg/m²

While we have provided Thermal Resistance values for all thicknesses on the Unilin XT/PR-UF datasheet, some thicknesses may not be readily available.