140mm Kingspan Thermafloor TF70 delivers outstanding thermal performance as a floor insulation board, with a thermal conductivity rating of 0.022 W/mK. This product suits both solid and suspended floor applications in new builds and refurbishment work. The 140mm insulation boards are straightforward to cut and position, making installation efficient and straightforward. Multiple thickness options are available to match your specific project needs.
Amongst the leading thermally performing 140mm floor insulation boards, this lightweight product is simple to move, position and fit. It works effectively with most underfloor heating installations, helping to minimise expenses on groundworks and pipework connections.
Brand: Kingspan
Thickness: 140mm
Length: 2400mm
Width: 1200mm
Weight: 1.84kg | Thermafloor TF70 carries an approximate weight of 3.50 kg/m2 at 140mm thickness.
Model: 140mm Thermapitch TF70
Dimensions: 2,400mm x 1,200mm x 140mm
Compressive Strength: Typically exceeds 140 kPa at 10% compression.
Density: 32 Kg/m3
Length: 2400mm
Material: Polyisocyanurate (Kingspan PIR Insulation)
R-Value: 6.35m2K/W
Size: 1200mm x 2400mm
Thermal Conductivity: 0.022 W/mk
Finish: 140mm TF70 features a low emissivity composite foil facing on both surfaces, autohesively bonded to the core during production.
Applications: High performance floor insulation.
Fire Resistance: Under System 4 AVCP, 140mm Thermafloor TF70 achieves Euroclass F rating.
Water vapour resistance: 110 MNs/g
BBA Certified: Yes, No. 14/5133
Features: Improves the Thermal Resistance | Unaffected by air infiltration | Resistant to the passage of water vapour
The 140mm insulation performs across numerous applications, including solid concrete ground-based floors, beam and dense block construction, suspended timber ground floors, and timber floors on battens.
Throughout manufacture, Kingspan 140mm PIR receives a low emissivity composite foil layer on both faces, functioning as a reflective barrier to boost thermal resistance within unventilated cavities adjacent to the board.
140mm Kingspan Thermafloor TF70 utilises Nilflam® technology, delivering a premium fibre-free rigid thermoset polyisocyanurate (PIR) core. The production method employs a zero Ozone Depletion Potential (ODP) blowing agent with minimal Global Warming Potential (GWP).
Following BS EN 826:2013 testing (Thermal insulating products for building applications. Determination of compression behavior), 140mm Kingspan PIR insulation regularly achieves compressive strength exceeding 150 kPa at 10% compression.
Per BS EN 12086:2013 (Thermal insulating products for building applications. Determination of water vapor transmission properties) assessment, this product typically demonstrates resistance well above 100 MNs/g.
The lifespan of 140mm TF70 Floor Insulation relies on correct fitting, adequate structural support, and proper usage conditions. When properly installed, the product can perform indefinitely.
140mm Kingspan Insulation TF70 holds an F Euroclass rating under System 4 AVCP. When installed in pitched roof applications beneath appropriate roof coverings, it satisfies national standards for external fire exposure.
Browse our complete Kingspan range and refine by thickness or area coverage using the filters on the left. For guidance on product suitability for your application, or to request a volume discount quotation, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.
















