Kingspan Insulation Thermafloor TF70 PIR floor board Kingspan 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.

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

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 may apply as we may need to get stock in 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.

Due to supply challenges from the manufacturers, please allow extended lead times on all PIR boards. Please feel free to contact me to check availability and lead times.

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

Core

Kingspan Thermafloor TF70 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)

Facings

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

Product Properties

Thermal Conductivity 0.022 W/m·K
Compressive Strength 140 kPa at 10% compression BS / I.S. EN 826: 2013
Nominal Density 32 kg/m³
Board Length 1.2m
Board Width 2.4m
Board Edge Square
Vapour Resistance > 100 MNs/gm BS / I.S. EN 12086: 2013

Product Prices

Buy Kingspan Thermafloor TF70

The prices and quantity discounts below are 'per pack' rates. Packs contain multiple boards... 15 x 1.2x2.4m = 43.2m² - in this instance, there are 15 x boards in a pack where each board is 1.2m x 2.4m providing a total coverage of 43.2m² per pack.

Rarely requested product sourced directly from manufacturer. Kingspan TF70 20mm, 15 x 1.2x2.4m = 43.2m² - ranging from £6.02 to £6.29 per m²

1 x pack @ £6.29 per m² / £18.13 per board = £271.92 (£326.30 inc-VAT) per pack
2 x packs @ £6.24 per m² / £17.97 per board = £269.51 (£323.41 inc-VAT) per pack
3 x packs @ £6.18 per m² / £17.81 per board = £267.10 (£320.52 inc-VAT) per pack
4 x packs @ £6.13 per m² / £17.65 per board = £264.70 (£317.64 inc-VAT) per pack
5 x packs @ £6.07 per m² / £17.49 per board = £262.29 (£314.75 inc-VAT) per pack
6 x packs @ £6.02 per m² / £17.33 per board = £259.89 (£311.87 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 25mm, 12 x 1.2x2.4m = 34.56m² - ranging from £6.52 to £6.83 per m²

1 x pack @ £6.83 per m² / £19.66 per board = £235.89 (£283.07 inc-VAT) per pack
2 x packs @ £6.77 per m² / £19.48 per board = £233.80 (£280.56 inc-VAT) per pack
3 x packs @ £6.70 per m² / £19.31 per board = £231.72 (£278.06 inc-VAT) per pack
4 x packs @ £6.64 per m² / £19.14 per board = £229.63 (£275.56 inc-VAT) per pack
5 x packs @ £6.58 per m² / £18.96 per board = £227.54 (£273.05 inc-VAT) per pack
6 x packs @ £6.52 per m² / £18.79 per board = £225.45 (£270.54 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 30mm, 10 x 1.2x2.4m = 28.8m² - ranging from £7.52 to £7.86 per m²

1 x pack @ £7.86 per m² / £22.65 per board = £226.51 (£271.81 inc-VAT) per pack
2 x packs @ £7.80 per m² / £22.45 per board = £224.51 (£269.41 inc-VAT) per pack
3 x packs @ £7.73 per m² / £22.25 per board = £222.50 (£267.00 inc-VAT) per pack
4 x packs @ £7.66 per m² / £22.05 per board = £220.50 (£264.60 inc-VAT) per pack
5 x packs @ £7.59 per m² / £21.85 per board = £218.50 (£262.20 inc-VAT) per pack
6 x packs @ £7.52 per m² / £21.65 per board = £216.49 (£259.79 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 40mm, 8 x 1.2x2.4m = 23.04m² - ranging from £8.82 to £9.23 per m²

1 x pack @ £9.23 per m² / £26.59 per board = £212.72 (£255.26 inc-VAT) per pack
2 x packs @ £9.15 per m² / £26.35 per board = £210.83 (£253.00 inc-VAT) per pack
3 x packs @ £9.07 per m² / £26.12 per board = £208.95 (£250.74 inc-VAT) per pack
4 x packs @ £8.99 per m² / £25.88 per board = £207.07 (£248.48 inc-VAT) per pack
5 x packs @ £8.91 per m² / £25.65 per board = £205.19 (£246.23 inc-VAT) per pack
6 x packs @ £8.82 per m² / £25.41 per board = £203.30 (£243.96 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 50mm, 6 x 1.2x2.4m = 17.28m² - ranging from £10.13 to £10.60 per m²

1 x pack @ £10.60 per m² / £30.53 per board = £183.17 (£219.80 inc-VAT) per pack
2 x packs @ £10.51 per m² / £30.26 per board = £181.55 (£217.86 inc-VAT) per pack
3 x packs @ £10.41 per m² / £29.99 per board = £179.92 (£215.90 inc-VAT) per pack
4 x packs @ £10.32 per m² / £29.72 per board = £178.30 (£213.96 inc-VAT) per pack
5 x packs @ £10.22 per m² / £29.45 per board = £176.68 (£212.02 inc-VAT) per pack
6 x packs @ £10.13 per m² / £29.18 per board = £175.06 (£210.07 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 60mm, 5 x 1.2x2.4m = 14.4m² - ranging from £12.35 to £12.92 per m²

1 x pack @ £12.92 per m² / £37.20 per board = £186.00 (£223.20 inc-VAT) per pack
2 x packs @ £12.80 per m² / £36.87 per board = £184.36 (£221.23 inc-VAT) per pack
3 x packs @ £12.69 per m² / £36.54 per board = £182.71 (£219.25 inc-VAT) per pack
4 x packs @ £12.57 per m² / £36.21 per board = £181.06 (£217.27 inc-VAT) per pack
5 x packs @ £12.46 per m² / £35.88 per board = £179.42 (£215.30 inc-VAT) per pack
6 x packs @ £12.35 per m² / £35.55 per board = £177.77 (£213.32 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 70mm, 4 x 1.2x2.4m = 11.52m² - ranging from £13.45 to £14.07 per m²

1 x pack @ £14.07 per m² / £40.52 per board = £162.08 (£194.50 inc-VAT) per pack
2 x packs @ £13.95 per m² / £40.16 per board = £160.65 (£192.78 inc-VAT) per pack
3 x packs @ £13.82 per m² / £39.80 per board = £159.21 (£191.05 inc-VAT) per pack
4 x packs @ £13.70 per m² / £39.45 per board = £157.78 (£189.34 inc-VAT) per pack
5 x packs @ £13.57 per m² / £39.09 per board = £156.34 (£187.61 inc-VAT) per pack
6 x packs @ £13.45 per m² / £38.73 per board = £154.91 (£185.89 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 75mm, 4 x 1.2x2.4m = 11.52m² - ranging from £13.97 to £14.61 per m²

1 x pack @ £14.61 per m² / £42.08 per board = £168.33 (£202.00 inc-VAT) per pack
2 x packs @ £14.48 per m² / £41.71 per board = £166.84 (£200.21 inc-VAT) per pack
3 x packs @ £14.35 per m² / £41.34 per board = £165.35 (£198.42 inc-VAT) per pack
4 x packs @ £14.22 per m² / £40.97 per board = £163.86 (£196.63 inc-VAT) per pack
5 x packs @ £14.09 per m² / £40.59 per board = £162.37 (£194.84 inc-VAT) per pack
6 x packs @ £13.97 per m² / £40.22 per board = £160.88 (£193.06 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 80mm, 4 x 1.2x2.4m = 11.52m² - ranging from £15.67 to £16.40 per m²

1 x pack @ £16.40 per m² / £47.23 per board = £188.90 (£226.68 inc-VAT) per pack
2 x packs @ £16.25 per m² / £46.81 per board = £187.22 (£224.66 inc-VAT) per pack
3 x packs @ £16.11 per m² / £46.39 per board = £185.55 (£222.66 inc-VAT) per pack
4 x packs @ £15.96 per m² / £45.97 per board = £183.88 (£220.66 inc-VAT) per pack
5 x packs @ £15.82 per m² / £45.55 per board = £182.21 (£218.65 inc-VAT) per pack
6 x packs @ £15.67 per m² / £45.14 per board = £180.54 (£216.65 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 90mm, 3 x 1.2x2.4m = 8.64m² - ranging from £17.36 to £18.16 per m²

1 plus packs @ £18.16 per m² / £52.30 per board = £156.91 (£188.29 inc-VAT) per pack
3 plus packs @ £18.00 per m² / £51.84 per board = £155.52 (£186.62 inc-VAT) per pack
5 plus packs @ £17.84 per m² / £51.38 per board = £154.13 (£184.96 inc-VAT) per pack
7 plus packs @ £17.68 per m² / £50.91 per board = £152.74 (£183.29 inc-VAT) per pack
9 plus packs @ £17.52 per m² / £50.45 per board = £151.35 (£181.62 inc-VAT) per pack
11 plus packs @ £17.36 per m² / £49.99 per board = £149.96 (£179.95 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 100mm, 3 x 1.2x2.4m = 8.64m² - ranging from £17.44 to £18.25 per m²

1 plus packs @ £18.25 per m² / £52.56 per board = £157.69 (£189.23 inc-VAT) per pack
3 plus packs @ £18.09 per m² / £52.10 per board = £156.29 (£187.55 inc-VAT) per pack
5 plus packs @ £17.93 per m² / £51.63 per board = £154.89 (£185.87 inc-VAT) per pack
7 plus packs @ £17.77 per m² / £51.17 per board = £153.50 (£184.20 inc-VAT) per pack
9 plus packs @ £17.60 per m² / £50.70 per board = £152.10 (£182.52 inc-VAT) per pack
11 plus packs @ £17.44 per m² / £50.24 per board = £150.71 (£180.85 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 120mm, 2 x 1.2x2.4m = 5.76m² - ranging from £21.78 to £22.78 per m²

1 plus packs @ £22.78 per m² / £65.62 per board = £131.23 (£157.48 inc-VAT) per pack
4 plus packs @ £22.58 per m² / £65.04 per board = £130.07 (£156.08 inc-VAT) per pack
7 plus packs @ £22.38 per m² / £64.46 per board = £128.91 (£154.69 inc-VAT) per pack
10 plus packs @ £22.18 per m² / £63.88 per board = £127.75 (£153.30 inc-VAT) per pack
13 plus packs @ £21.98 per m² / £63.30 per board = £126.59 (£151.91 inc-VAT) per pack
16 plus packs @ £21.78 per m² / £62.72 per board = £125.43 (£150.52 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 125mm, 2 x 1.2x2.4m = 5.76m² - ranging from £24.74 to £25.89 per m²

1 plus packs @ £25.89 per m² / £74.57 per board = £149.13 (£178.96 inc-VAT) per pack
4 plus packs @ £25.66 per m² / £73.91 per board = £147.81 (£177.37 inc-VAT) per pack
7 plus packs @ £25.43 per m² / £73.25 per board = £146.49 (£175.79 inc-VAT) per pack
10 plus packs @ £25.20 per m² / £72.59 per board = £145.17 (£174.20 inc-VAT) per pack
13 plus packs @ £24.97 per m² / £71.93 per board = £143.85 (£172.62 inc-VAT) per pack
16 plus packs @ £24.74 per m² / £71.27 per board = £142.53 (£171.04 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 140mm, 2 x 1.2x2.4m = 5.76m² - ranging from £26.96 to £28.21 per m²

1 plus packs @ £28.21 per m² / £81.24 per board = £162.47 (£194.96 inc-VAT) per pack
4 plus packs @ £27.96 per m² / £80.52 per board = £161.03 (£193.24 inc-VAT) per pack
7 plus packs @ £27.71 per m² / £79.80 per board = £159.59 (£191.51 inc-VAT) per pack
10 plus packs @ £27.46 per m² / £79.08 per board = £158.15 (£189.78 inc-VAT) per pack
13 plus packs @ £27.21 per m² / £78.36 per board = £156.71 (£188.05 inc-VAT) per pack
16 plus packs @ £26.96 per m² / £77.64 per board = £155.28 (£186.34 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan TF70 150mm, 2 x 1.2x2.4m = 5.76m² - ranging from £27.40 to £28.67 per m²

1 plus packs @ £28.67 per m² / £82.57 per board = £165.14 (£198.17 inc-VAT) per pack
4 plus packs @ £28.42 per m² / £81.84 per board = £163.68 (£196.42 inc-VAT) per pack
7 plus packs @ £28.16 per m² / £81.11 per board = £162.22 (£194.66 inc-VAT) per pack
10 plus packs @ £27.91 per m² / £80.38 per board = £160.76 (£192.91 inc-VAT) per pack
13 plus packs @ £27.66 per m² / £79.65 per board = £159.30 (£191.16 inc-VAT) per pack
16 plus packs @ £27.40 per m² / £78.92 per board = £157.84 (£189.41 inc-VAT) per pack

Less popular product commonly available at selected depots. Bostik Idenden T303 tape, 100mm x 50m = 50lm - ranging from £0.12 to £0.12 per lm

1 plus rolls @ £0.12 per lm = £6.22 (£7.46 inc-VAT) per roll
5 plus rolls @ £0.12 per lm = £6.16 (£7.39 inc-VAT) per roll
10 plus rolls @ £0.12 per lm = £6.11 (£7.33 inc-VAT) per roll
15 plus rolls @ £0.12 per lm = £6.05 (£7.26 inc-VAT) per roll
20 plus rolls @ £0.12 per lm = £6.00 (£7.20 inc-VAT) per roll
25 plus rolls @ £0.12 per lm = £5.94 (£7.13 inc-VAT) per roll

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 (highlighted in green below in the properties section) 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.

Please observe the 'Star Rating' indicators to assess availability.
Product Availability Excellent Generally 1 or 2 days for delivery
Product Availability Good Generally 1 to 5 days for delivery
Product Availability Fair Generally 5 to 10 days for delivery
Product Availability Poor Generally 5 to 15 days for delivery
Product Availability Undetermined 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 Certification, Downloads, and Installation Guides

Thermal Resistance

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

Items highlighted in green are generally held in stock by Kingspan.

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

Solid Ground Floors – Insulation Below Floor Slab or Screed

Below Slab specific
  • The site should be prepared and foundations, where appropriate, built to damp proof course (DPC) level.
  • A thin sand blinding may be used to achieve a continuous level surface free from projections over rolled hardcore.
  • Below Screed specific
  • Concrete slabs should be allowed to dry out fully prior to the installation of the insulation boards (average 1 day per mm of slab thickness).
  • The surface of the slab should be smooth, flat and free from projections. Rough cast slabs should be leveled using a thin sand blinding to ensure boards are continuously supported.
  • General guides for Below Slab or Screed
  • The damp proof membrane (minimum 300 micron / 1200 gauge polythene) should be laid with joints well lapped and folded, to prevent the passage of ground water, over well compacted hardcore or the concrete floor slab, prior to laying the insulation boards.
  • The membrane should be brought up the surrounding foundation walls until it is sufficiently above the height of the wall DPC so that it will connect with or form the DPC.
  • The insulation boards should always be loose–laid break–bonded, with joints lightly butted.
  • If two layers of insulation are required, they should be horizontally offset relative to each other so that, as far as possible, the board joints in the two adjacent layers do not coincide with each other.
  • A strip of insulation board (minimum 20 mm thick) should be placed vertically around the perimeter of the floor in order to prevent cold bridging. The bottom of the strip of insulation board should be level with the top of the floor screed and the bottom should be level with the bottom of the horizontal floor insulation, and closely butted up to it.
  • Insulation boards should be overlaid with a polythene sheet (not less than 125 micron / 500 gauge), to prevent the wet screed / concrete penetrating the joints between the boards, and to act as a vapour control layer. Ensure the polythene sheet has 150 mm overlaps, taped at the joints, and is turned up 100 mm at the walls.
  • For insulation below slab: the subsequent installation of the concrete slab and screed or other flooring material is carried out in a manner similar to that for an un–insulated floor. The concrete slab and screed should be allowed to dry out prior to the installation of the floor finish.
  • For insulation below screed: use sand and cement screed laid to a minimum thickness of 65 mm for domestic construction and 75 mm elsewhere.
  • Kingspan TF70 Solid Floor Below Floor Slab
    Kingspan TF70 Solid Floor Below Floor Slab
    Kingspan TF70 Solid Floor Below Floor Screed
    Kingspan TF70 Solid Floor Below Floor Screed

    Suspended Timber Ground Floors – Insulation Between Joists

    Installation from Above the Floor Joists
  • The installation of Kingspan Thermafloor TF70 Floorboard in suspended floor constructions should be carried out before commencement of floor boarding.
  • The insulation boards should be cut to fit snugly between the floor joists. Measure the distance between the joists prior to cutting the boards as spacings can vary.
  • In order to ensure insulation boards are flush with the top surface of the joists, they should be supported on minimum 25 mm x 25 mm treated softwood timber battens, proprietary galvanised steel saddle clips, or galvanised nails partially driven into the side of the joists.
  • Battens / nails should be placed at an appropriate height to suit the thickness of board being fitted, and nails should remain 40 mm proud of the joist.
  • The insulation boards should then be fitted between the joists so that they are supported by the battens / saddle clips or nails.
  • Installation from Below the Floor Joists
  • Floor boards should be fixed over joists prior to fitting Kingspan Thermafloor TF70 Floorboard from below.
  • The insulation boards should be cut to fit snugly between the floor joists. Measure the distance between the joists prior to cutting the boards as spacings can vary.
  • Push the cut insulation boards between the joists so they are flush with the underside of the floor boards.
  • Side–nail 25 mm x 25 mm timber battens to the joists or partially drive galvanised nails into the side of the joists in the appropriate position to hold the boards in place.
  • General guides for Above or Below Floor Joists
  • If two layers of insulation are required, they should be horizontally offset relative to each other so that, as far as possible, the board joints in the two adjacent layers do not coincide with each other.
  • All board joints should be tightly butted.
  • Ensure that insulation boards are fitted tightly between joists, and any gaps are filled with expanding urethane sealant.
  • Any narrow gaps between a joist and perimeter wall should be insulated by specially cut pieces of board which in turn should be supported on blocks nailed to the underside of the joists. Gaps less than 25 mm wide should be filled with expanding urethane sealant.
  • Kingspan TF70 Suspended Timber Floor Between Joists
    Kingspan TF70 Suspended Timber Floor Between Joists
    Minimum order level - £175.00 ex-VAT. For further details on Delivery Charges and Minimum Order levels, please Click Here