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


Product options


Availability Indicators

Kingspan Thermafloor TF70 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.

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

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

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

Product Properties

Thickness20mm and 165mm

Product Performance

Thermal Conductivity0.022 W/mK 
Compressive Strength140 kPa at 10% compressionBS EN 826:2013
Vapour Resistance> 100 MNs/gmBS EN 12086: 1997 / I.S. EN 12086: 1998
Nominal Density32 kg/m³ 

Product Variants

ProductThicknessThermal Resistancekg/m²
Kingspan Thermafloor TF70 20mm20mm0.90 m²K/W0.94 kg/m²
Kingspan Thermafloor TF70 25mm25mm1.10 m²K/W1.10 kg/m²
Kingspan Thermafloor TF70 30mm30mm1.35 m²K/W1.26 kg/m²
Kingspan Thermafloor TF70 40mm40mm1.80 m²K/W1.58 kg/m²
Kingspan Thermafloor TF70 50mm50mm2.25 m²K/W1.90 kg/m²
Kingspan Thermafloor TF70 60mm60mm2.70 m²K/W2.22 kg/m²
Kingspan Thermafloor TF70 70mm70mm3.15 m²K/W2.54 kg/m²
Kingspan Thermafloor TF70 75mm75mm3.40 m²K/W2.70 kg/m²
Kingspan Thermafloor TF70 80mm80mm3.60 m²K/W2.86 kg/m²
Kingspan Thermafloor TF70 90mm90mm4.05 m²K/W3.18 kg/m²
Kingspan Thermafloor TF70 100mm100mm4.50 m²K/W3.50 kg/m²
Kingspan Thermafloor TF70 110mm110mm5.00 m²K/W3.82 kg/m²
Kingspan Thermafloor TF70 120mm120mm5.45 m²K/W4.14 kg/m²
Kingspan Thermafloor TF70 125mm125mm5.65 m²K/W4.30 kg/m²
Kingspan Thermafloor TF70 130mm130mm5.90 m²K/W4.46 kg/m²
Kingspan Thermafloor TF70 140mm140mm6.35 m²K/W4.78 kg/m²
Kingspan Thermafloor TF70 150mm150mm6.80 m²K/W5.10 kg/m²

While we have provided Thermal Resistance values for all thicknesses on the Kingspan Thermafloor TF70 datasheet, some thicknesses may not be readily available.