Kingspan Thermaroof TR24



High performance rigid Polyisocyanurate (PIR) flat roof insulation board

Can be used on flat roofs with partially bonded torch applied multi-layer bituminous waterproofing.

Compatible with majority of torch applied waterproofing systems.

Ideal for new build and refurbishment.

Resistant to the passage of water vapour.

Thicknesses and Availability:

Available in most popular thicknesses from the manufacturer; short lead-times apply as we may need to get the products in from Kingspan before delivering to site.

This Thermaroof Range includes the following readily available product thicknesses: 50mm, 80mm, 100mm 120mm and 130mm.

The following thicknesses are manufactured to order: 30mm, 140mm and 150mm; these may carry minimum order levels.


Product options

Quantity Product ex-VAT inc-VAT  
£93.78 £112.54
£72.76 £87.31
£67.83 £81.40
£101.38 £121.66
£92.29 £110.75
£99.66 £119.59

Availability Indicators

Kingspan Thermaroof TR24 is sent out from depots nationwide and is subject to the Local Depot Delivery minimum order levels and delivery charge thresholds.

Limited stock of the most popular boards sizes may be held at some of our larger depots, and thus, available on shorter lead times than the availability rating suggests.

Kingspan reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times may vary.

  • 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

Flat roof insulating board

Kingspans high performance polyisocyanurate (PIR) foam board, Thermaroof TR24, is suitable for use in flat roofs waterproofed with most torch on applied waterproofing applications.

Product Make-up

Core: Kingspan Thermaroof TR24 is manufactured with Nilflam technology, a high performance fibre–free rigid thermoset polyisocyanurate (PIR) insulant.

Facings: Faced with bitumen coated glass tissue finished with a thermofusible polypropylene fleece on the upper facing while the lower face is a mineralised glass tissue, autohesively bonded to the insulation core during manufacture.

Product Properties

Thickness 30mm to 150mm  
Board Length 1.2m  
Board Width 0.6m  
Board Edge Square  

Product Performance

Thermal Conductivity 0.027 W/mK (insulant thickness < 80 mm)
0.025 W/mK (insulant thickness 80 – 119 mm)
0.024 W/mK (insulant thickness ≥ 120 mm) W/mK
Compressive Strength 150 kPa at 10% compression BS / I.S. EN 826: 2013
Vapour Resistance > 300 MNs/gm BS / I.S. EN 12086: 2013
Nominal Density 32 kg/m³  

Product Variants

Product Thickness Thermal Resistance kg/m²
Kingspan TR24 30mm 30mm 1.10 m²K/W 1.93 kg/m²
Kingspan TR24 50mm 50mm 1.85 m²K/W 2.60 kg/m²
Kingspan TR24 80mm 80mm 3.20 m²K/W 2.88 kg/m²
Kingspan TR24 100mm 100mm 4.00 m²K/W 4.27 kg/m²
Kingspan TR24 120mm 120mm 5.00 m²K/W 4.94 kg/m²
Kingspan TR24 130mm 130mm 5.40 m²K/W 5.28 kg/m²
Kingspan TR24 140mm 140mm 5.80 m²K/W 5.61 kg/m²
Kingspan TR24 150mm 150mm 6.25 m²K/W 5.95 kg/m²