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Underfloor Insulation

Over 20% of total building heat loss is through the floor. Choose from our range of underfloor insulation and start saving money on heating bills today!
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes) Floor Insulation
Celotex
from £11.00 £13.20
from £11.00 £13.20
£0.00
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Celotex 50mm GA4050 2.4m x 1.2m Floor Insulation
Celotex
£16.40 £19.68
£16.40 £19.68
£0.00
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Celotex 100mm GA4100 2.4m x 1.2m | 100mm Celotex Floor Insulation
Celotex
£28.00 £33.60
£28.00 £33.60
£0.00
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Celotex 25mm TB4025 2.4m x 1.2m Floor Insulation
Celotex
£11.00 £13.20
£11.00 £13.20
£0.00
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75mm Celotex GA4075 2.4m x 1.2m Floor Insulation
Celotex
£22.90 £27.48
£22.90 £27.48
£0.00
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Celotex TB4000 Insulation Board 1.2m x 2.4m - 25mm to 40mm Floor Insulation
Celotex
from £11.00 £13.20
from £11.00 £13.20
£0.00
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Celotex 120mm XR4120 2.4m x 1.2m Floor Insulation
Celotex
£34.99 £41.99
£34.99 £41.99
£0.00
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Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm Loft Insulation
Celotex
from £34.99 £41.99
from £34.99 £41.99
£0.00
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Celotex 40mm TB4040 2.4m x 1.2m Floor Insulation
Celotex
£15.50 £18.60
£15.50 £18.60
£0.00
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Recticel Eurothane GP (2.4m x 1.2m) All Sizes Insulation
Recticel
from £11.00 £13.20
from £11.00 £13.20
£0.00
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70mm Celotex GA4070 2.4m x 1.2m Floor Insulation
Celotex
£23.00 £27.60
£23.00 £27.60
£0.00
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EPS 70 (All Sizes) 2400mm x 1200mm Floor Insulation
Insulation4Less
£44.95 £53.94
£44.95 £53.94
£0.00
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150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm Floor Insulation
Celotex
£42.50 £51.00
£42.50 £51.00
£0.00
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Celotex 60mm GA4060 2.4m x 1.2m Floor Insulation
Celotex
£21.00 £25.20
£21.00 £25.20
£0.00
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90mm Celotex GA4090 2.4m x 1.2m Floor Insulation
Celotex
£28.75 £34.50
£28.75 £34.50
£0.00
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Celotex 30mm TB4030 2.4m x 1.2m Floor Insulation
Celotex
£12.50 £15.00
£12.50 £15.00
£0.00
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Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m Floor Insulation
Kingspan
from £99.59 £119.51
from £99.59 £119.51
£0.00
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80mm Celotex GA4080 2.4m x 1.2m Floor Insulation
Celotex
£26.20 £31.44
£26.20 £31.44
£0.00
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Mannok Insulation Board 1.2m x 2.4m (All Sizes) Floor Insulation
Mannok
from £11.00 £13.20
from £11.00 £13.20
£0.00
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12mm Celotex TB4012 2.4m x 1.2m Floor Insulation
Call to enquire
Celotex
£0.00 £0.00
£0.00 £0.00
£0.00
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Danosa Danopren TR XPS Insulation 600mm x 1250mm - All Sizes Floor Insulation
Danosa
from £43.40 £52.08
from £43.40 £52.08
£0.00
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Celotex 20mm TB4020 2.4m x 1.2m Wall Insulation
Call to enquire
Celotex
£11.70 £14.04
£11.70 £14.04
£0.00
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140mm Celotex XR4140 Insulation Board 2.4m x 1.2m Floor Insulation
Celotex
£42.50 £51.00
£42.50 £51.00
£0.00
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Greenguard GG300 1.25m x 0.6m - All Sizes Wall Insulation
Kingspan
from £49.86 £59.83
from £49.86 £59.83
£0.00
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Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm Floor Insulation
Kingspan
from £285.00 £342.00
from £285.00 £342.00
£0.00
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EcoTherm Eco-versal Insulation Board (2.4m x 1.2m) - All Sizes Floor Insulation
Ecotherm
from £11.00 £13.20
from £11.00 £13.20
£0.00
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Celotex 110mm XR4110 2.4m x 1.2m Floor Insulation
Celotex
£37.00 £44.40
£37.00 £44.40
£0.00
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130mm Celotex XR4130 2.4m x 1.2m Floor Insulation
Celotex
£41.50 £49.80
£41.50 £49.80
£0.00
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Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12) Wall Insulation
Celotex
£737.00 £884.40
£737.00 £884.40
£0.00
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Unilin Thin-R 2.4m x 1.2m (All Sizes) Floor Insulation
Unilin
from £11.00 £13.20
from £11.00 £13.20
£0.00
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PIR-Plywood Laminate Insulation Board (All Sizes) - 2.4m x 1.2m PIR-Plywood Laminate
Mannok
from £1,283.33 £1,540.00
from £1,283.33 £1,540.00
£0.00
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Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12) Loft Insulation
Celotex
£1,018.80 £1,222.56
£1,018.80 £1,222.56
£0.00
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Ballytherm 2.4m x 1.2m - All Sizes Floor Insulation
Call to enquire
Ballytherm
from £16.20 £19.44
from £16.20 £19.44
£0.00
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Safe-R 2.4m x 1.2m (All Sizes) Floor Insulation
Call to enquire
Unilin
£0.00 £0.00
£0.00 £0.00
£0.00
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Danosa 75mm XPS Concrete Slab Grey - 500mm x 500mm Flat Roof Insulation
Danosa
£10.56 £12.67
£10.56 £12.67
£0.00
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BASF Styrodur XPS (1265mm x 615mm) All Sizes Insulation Board
Call to enquire
BASF
from £78.02 £93.62
from £78.02 £93.62
£0.00
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GreenGuard GG500 600mm x 1250mm - All Sizes Floor Insulation
Call to enquire
Kingspan
from £8.46 £10.15
from £8.46 £10.15
£0.00
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Unilin Thin-R PIR 125mm x 2.4m x 1.2m Floor Insulation
Unilin
£47.79 £57.35
£47.79 £57.35
£0.00
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Unilin Thin-R PIR 30mm x 2.4m x 1.2m Floor Insulation
Unilin
£12.50 £15.00
£12.50 £15.00
£0.00
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Unilin Thin-R PIR 25mm x 2.4m x 1.2m Floor Insulation
Unilin
£11.00 £13.20
£11.00 £13.20
£0.00
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Unilin Thin-R PIR 150mm x 2.4m x 1.2m Floor Insulation
Unilin
£42.50 £51.00
£42.50 £51.00
£0.00
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Unilin Thin-R PIR 140mm x 2.4m x 1.2m Floor Insulation
Unilin
£42.50 £51.00
£42.50 £51.00
£0.00
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Unilin Thin-R PIR 130mm x 2.4m x 1.2m Floor Insulation
Unilin
£41.50 £49.80
£41.50 £49.80
£0.00
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Unilin Thin-R PIR 120mm x 2.4m x 1.2m Floor Insulation
Unilin
£34.99 £41.99
£34.99 £41.99
£0.00
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Unilin Thin-R PIR 100mm x 2.4m x 1.2m Floor Insulation
Unilin
£28.00 £33.60
£28.00 £33.60
£0.00
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Unilin Thin-R PIR 90mm x 2.4m x 1.2m Floor Insulation
Unilin
£28.75 £34.50
£28.75 £34.50
£0.00
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Unilin Thin-R PIR 80mm x 2.4m x 1.2m Floor Insulation
Unilin
£26.20 £31.44
£26.20 £31.44
£0.00
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Unilin Thin-R PIR 75mm x 2.4m x 1.2m Floor Insulation
Unilin
£22.90 £27.48
£22.90 £27.48
£0.00
Sold out

Insulation4less.co.uk offers a comprehensive range of underfloor insulation products, catering to a variety of needs for thermal efficiency and comfort in residential and commercial buildings. Our underfloor insulation solutions are designed to reduce heat loss, improve energy efficiency, and enhance the comfort of your space.

PIR Insulation Boards

Celotex and Recticel brands lead our offering with their General Purpose PIR (Polyisocyanurate) Insulation Boards. Available in dimensions of 2.4m x 1.2m and varying in thicknesses from 12mm to 200mm, these boards provide a high-performance thermal solution for a range of flooring applications. The PIR boards are suited for both new builds and refurbishment projects where effective thermal insulation is crucial. They are also a popular choice for their ease of installation and structural strength.

XPS Insulation

For applications requiring enhanced moisture resistance and durability, our selection includes Danosa Danopren TR XPS Insulation and BASF Styrodur XPS. These Extruded Polystyrene (XPS) products offer robust insulation performance, especially in areas susceptible to moisture, such as basements and areas with high ground water levels.

EPS Insulation

EPS 70 is another key product within our underfloor insulation range. Expanded Polystyrene (EPS) is lightweight, versatile, and cost-effective, making it suitable for a variety of floor insulation applications where a balance between performance and budget is required.

Specialty Insulation Boards

Our catalogue also includes specialized solutions like Kingspan Thermafloor TF70 and Kingspan Kooltherm K103 Floorboards, which provide high thermal efficiency in a slimmer profile. These products are ideal when space is at a premium and are renowned for their exceptional compressive strength.

EcoTherm Eco-versal and Greenguard products also form part of our high-performance underfloor insulation, offering eco-friendly options with excellent thermal properties.

Laminate Insulation Boards

For hybrid insulation and structural applications, we have PIR-Plywood Laminate Insulation Boards. These are composite products that offer the benefits of insulation coupled with the convenience of a pre-laminated plywood top, streamlining the installation process for underfloor systems.

Considerations for Selection

When choosing the right underfloor insulation, consider the following:

  • Thermal Performance: Check the R-value, which indicates the material's resistance to heat flow.
  • Compressive Strength: Important for floor applications to withstand load-bearing requirements.
  • Moisture Resistance: Essential in damp environments or on ground floors.
  • Space Constraints: Thinner, high-performance insulation might be necessary for limited spaces.
  • Sustainability: Eco-friendly options might be preferable for those seeking green building standards.

Underfloor insulation is a key component of a building's thermal envelope. Whether you're installing over a concrete slab, suspending floors, or retrofitting, our range of underfloor insulation products at Insulation4less.co.uk provides the quality, variety, and performance needed to meet the demands of your project.

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