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25mm Kingspan Thermafloor TF70 PIR Insulation Board

25mm Kingspan TF70 Thermafloor PIR RIGID INSULATION BOARD 2400mm x 1200mm
25mm Kingspan TF70 Thermafloor PIR RIGID INSULATION BOARD 2400mm x 1200mm
25mm Kingspan TF70 Thermafloor PIR RIGID INSULATION BOARD 2400mm x 1200mm
25mm Kingspan TF70 Thermafloor PIR RIGID INSULATION BOARD 2400mm x 1200mm
25mm Kingspan Thermafloor TF70 PIR Insulation Board
  • Thermal conductivity of 0.022 W/mK
  • Easy to handle and install
  • BBA Certificate 14/5133
  • NSAI Agrément Certificate 03/0196
Estimated delivery:
In Stock
£ 44.80
Ex VAT: £ 37.33
  • Brand: Kingspan®
  • Model: 25mm Thermafloor TF70
  • Dimensions: 2,400mm x 1,200mm x 25mm
  • SKU: 25mm
  • Product code: P1-776
  • MPN: 25mm Kingspan ThermaFloor TF70

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Kingspan ThermaFloor TF70 Floor Board 25mm is a rigid thermoset foam insulation board used to insulate solid concrete, suspended ground floors and for use with underfloor heating systems.

Thermafloor TF70 Kingspan is a high performance flooring insulation suitable for use below the screed, in block and beam floors, concrete slab floors or beneath concrete and for supporting floating floors.

The insulation core and facings of Kingspan Thermafloor TF70 resist attack by mould and microbial growth, and do not provide any food value to vermin.

This reflective, low emissivity surface improves the thermal resistance of any unventilated cavity adjacent to the board.

If correctly installed, Thermafloor TF70 can have an indefinite life, durability depends on the supporting structure and the conditions of its use.

Kingspan Thermafloor range performs very well in fire resistance tests and can outperform equivalent constructions featuring non-combustible synthetic mineral fibre insulation.

ThermaFloor TF70 Flooring Insulation Board is thermally efficient, as determined by using long-term thermal resistance values called R-Value.

Kingspan TF70 Thermafloor, TP10 Thermapitch and TW55 Thermawall Insulation Boards are exactly the same high-performance PIR products, Kingspan is using different names for different applications in floors, roofs and walls.

TF70 PIR Rigid Insulation Board can be cut easily using a fine toothed saw, or by scoring with a sharp knife.

Ensure accurate trimming to achieve close-butting joints and continuity of insulation to avoid thermal bridging.




Thickness: 25mm

Size: 1200mm x 2400mm

Board coverage: 2.88m2

Density (Foam Core): 32 Kg/m3

Thermal Conductivity: 0.022 W/mk

R-Value: 1.1m2K/W

Water Vapour Resistance: greater than 100 MN.s/g

Compressive Strength: exceeds 140 kPa at 10% compression


Key points:

 · Unaffected by air infiltration.

 · Non-deleterious material.

 · Easy to handle and install.

 · Ideal for new build and refurbishment.

 · Resistant to the passage of water vapour.

 · Can reduce the cost of related items – soil removal, service connections.

 · Ideal to insulate solid concrete and suspended timber ground floors.

 · High performance rigid thermal insulation - thermal conductivity 0.022 W/m.K.

 · Robust Details for Part E of the Building Regulations (for England and Wales).


Fitting Kingspan Insulation Boards:

 · Measure the distance between the rafters, joists or studs before cutting the boards as spacings can vary.

 · Ensure that insulation boards are lightly butted and that there is a tight fit between the insulation and the rafters, joists or studs.

 · Fill all gaps with expanding urethane sealant.


Cutting Kingspan Boards:

 · Cutting should be carried out either by using a fine toothed saw, or by scoring with a sharp knife, snapping the board over a straight edge and then cutting the facing on the other side.

 · Ensure accurate trimming to achieve close-butting joints and continuity of insulation.


Please note, Kingspan TP10 / TW55 / TF70 are exactly the same.

Kingspan is using different name for different application.


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

Board covarage 2.88 m2
Compressive Strength exceeds 140 kPa
Density 32 Kg/m3
Length 2400mm
Material Polyisocyanurate (PIR)
R-Value 1.1m2K/W
Size 1200mm x 2400mm
Thermal Conductivity 0.022 W/mk
Thickness 25mm
Weight 2.30kg
Width 1200mm
Finish Composite foil facings
Shipping method Articulated Vehicle
Applications Concrete and suspended ground floors
BBA Certified Yes (no. 14/5133)
ETA Notification Yes
Features Simple to work and easy to install
Manufacturer Kingspan Thermafloor®

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
25mm Kingspan TF70 Thermafloor PIR RIGID INSULATION BOARD 2400mm x 1200mm
25mm Kingspan Thermafloor TF70 PIR Insulation Board
£ 44.80