Kingspan Insulation Thermafloor TF70 PIR floor board Celotex Insulation

Kingspan Thermafloor TF70

High performance rigid Polyisocyanurate (PIR) floor insulation board.

Can reduce the cost of related items such as soil.

Easy to handle and install.

Ideal for new build and refurbishment.

Can be used as detailed in Robust Details for Part E of the Building Regulations (England and Wales).

BBA Certified.

Unaffected by air infiltration; 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 Thermafloor Range includes the following readily available product thicknesses: 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 120mm, 125mm, 140mm and 150mm.

The folllowing thicknesses are manufactured to order: 105mm, 110mm, 115mm, 130mm and 165mm; these may carry minimum order levels.

Product Information

General information about Kingspan Thermafloor TF70

Product Application

Floor insulating board

Kingspans high performance polyisocyanurate (PIR) foam board, Thermafloor TF70, is suitable for use in solid concrete and suspended ground floors.

Product Make-up


Kingspan Thermafloor TF70 is manufactured with Nilflam technology, a high performance fibre–free rigid thermoset polyisocyanurate (PIR) insulant.


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

Product Properties

Thickness 20mm to 165mm
Board Length 2.4m
Board Width 1.2m
Board Edge Square

Product Prices

Buy Kingspan Thermafloor TF70

Product ex-VAT inc-VAT
Kingspan Thermafloor TF70 20mm, 15 x 1.2x2.4m = 43.2m² £207.09 £248.50
Kingspan Thermafloor TF70 25mm, 12 x 1.2x2.4m = 34.56m² £228.38 £274.05
Kingspan Thermafloor TF70 30mm, 10 x 1.2x2.4m = 28.8m² £219.35 £263.22
Kingspan Thermafloor TF70 40mm, 8 x 1.2x2.4m = 23.04m² £207.73 £249.27
Kingspan Thermafloor TF70 50mm, 6 x 1.2x2.4m = 17.28m² £177.48 £212.97
Kingspan Thermafloor TF70 60mm, 5 x 1.2x2.4m = 14.4m² £181.28 £217.53
Kingspan Thermafloor TF70 70mm, 4 x 1.2x2.4m = 11.52m² £158.32 £189.98
Kingspan Thermafloor TF70 75mm, 4 x 1.2x2.4m = 11.52m² £160.38 £192.45
Kingspan Thermafloor TF70 80mm, 4 x 1.2x2.4m = 11.52m² £178.19 £213.82
Kingspan Thermafloor TF70 90mm, 3 x 1.2x2.4m = 8.64m² £147.96 £177.55
Kingspan Thermafloor TF70 100mm, 3 x 1.2x2.4m = 8.64m² £149.12 £178.94
Kingspan Thermafloor TF70 120mm, 2 x 1.2x2.4m = 5.76m² £123.55 £148.26
Kingspan Thermafloor TF70 140mm, 2 x 1.2x2.4m = 5.76m² £153.22 £183.86
Kingspan Thermafloor TF70 150mm, 2 x 1.2x2.4m = 5.76m² £154.19 £185.02
Aluminium Foil Tape 100mm x 50m = 50lm £10.17 £12.20

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 0.022 W/mK
Compressive Strength 140 kPa at 10% compression BS / I.S. EN 826: 2013
Vapour Resistance > 100 MNs/gm BS / I.S. EN 12086: 2013
Nominal Density 32 kg/m³
Product Thickness Thermal Resistance kg/m²
Kingspan TF70 25mm 25mm 1.10 m²K/W 0.91 kg/m²
Kingspan TF70 30mm 30mm 1.35 m²K/W 1.04 kg/m²
Kingspan TF70 40mm 40mm 1.80 m²K/W 1.31 kg/m²
Kingspan TF70 50mm 50mm 2.25 m²K/W 1.56 kg/m²
Kingspan TF70 55mm 55mm 2.50 m²K/W 2.59 kg/m²
Kingspan TF70 60mm 60mm 2.70 m²K/W 1.92 kg/m²
Kingspan TF70 70mm 70mm 3.15 m²K/W 2.20 kg/m²
Kingspan TF70 75mm 75mm 3.40 m²K/W 2.30 kg/m²
Kingspan TF70 80mm 80mm 3.60 m²K/W 2.45 kg/m²
Kingspan TF70 90mm 90mm 4.06 m²K/W 2.91 kg/m²
Kingspan TF70 100mm 100mm 4.50 m²K/W 3.21 kg/m²
Kingspan TF70 110mm 110mm 5.00 m²K/W 3.86 kg/m²
Kingspan TF70 120mm 120mm 5.45 m²K/W 4.00 kg/m²
Kingspan TF70 125mm 125mm 5.65 m²K/W 4.34 kg/m²
Kingspan TF70 130mm 130mm 5.90 m²K/W 4.50 kg/m²
Kingspan TF70 140mm 140mm 6.35 m²K/W 4.82 kg/m²
Kingspan TF70 150mm 150mm 6.80 m²K/W 4.90 kg/m²

Product Certificates

Please visit the Kingspan website for product certificates.