Kingspan Insulation Thermaroof TR24 flat roof board Celotex Insulation

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.

Fibre–free core; manufactured with a blowing agent that has zero ODP and low GWP.

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: 120mm and 130mm.

The folllowing thicknesses are manufactured to order: 30mm, 50mm, 80mm, 100mm, 140mm and 150mm; these may carry minimum order levels.

Product Information

General information about Kingspan Thermaroof TR24

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


Kingspan Thermaroof TR24 is manufactured with Nilflam technology, a high performance fibre–free rigid thermoset polyisocyanurate (PIR) insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).


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 Prices

Buy Kingspan Thermaroof TR24

Product ex-VAT inc-VAT
Kingspan Thermaroof TR24 50mm, 6 x 0.6x1.2m = 4.32m² £69.29 £83.14
Kingspan Thermaroof TR24 80mm, 4 x 0.6x1.2m = 2.88m² £65.97 £79.16
Kingspan Thermaroof TR24 100mm, 5 x 0.6x1.2m = 3.6m² £98.59 £118.30
Kingspan Thermaroof TR24 120mm, 4 x 0.6x1.2m = 2.88m² £91.77 £110.12
Kingspan Thermaroof TR24 130mm, 4 x 0.6x1.2m = 2.88m² £100.97 £121.16

Limited stock of the most popular boards sizes may be held at some of our larger depots.

Where products need to be brought in from Kingspan, please allow approx. 1 week for delivery on stocked items and up to 3 weeks on made to order thicknesses. While Kingspan keep the majority of the popular thicknesses in stock, less popular thicknesses may carry a minimum order level.

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 my vary.

  • Generally 1 or 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

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

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 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

Product Certificates

Please visit the Kingspan website for product certificates.