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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!
68 products
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
Free Delivery
on orders over £300
Celotex
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
Celotex 50mm GA4050 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 50mm GA4050 2.4m x 1.2m
£17.15£20.58
Was £0.00
£17.15 £20.58
Sold out
Celotex 100mm GA4100 2.4m x 1.2m | 100mm Celotex
Free Delivery
on orders over £300
Celotex
Celotex 100mm GA4100 2.4m x 1.2m | 100mm Celotex
£28.99£34.79
Was £0.00
£28.99 £34.79
Sold out
Celotex 25mm TB4025 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 25mm TB4025 2.4m x 1.2m
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
75mm Celotex GA4075 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
75mm Celotex GA4075 2.4m x 1.2m
£23.65£28.38
Was £0.00
£23.65 £28.38
Sold out
Celotex TB4000 Insulation Board 1.2m x 2.4m - 25mm to 40mm
Free Delivery
on orders over £300
Celotex
Celotex TB4000 Insulation Board 1.2m x 2.4m - 25mm to 40mm
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
Celotex 120mm XR4120 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 120mm XR4120 2.4m x 1.2m
£35.90£43.08
Was £0.00
£35.90 £43.08
Sold out
Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
Free Delivery
on orders over £300
Celotex
Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
£35.90£43.08
Was £0.00
£35.90 £43.08
Sold out
Celotex 40mm TB4040 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 40mm TB4040 2.4m x 1.2m
£16.50£19.80
Was £0.00
£16.50 £19.80
Sold out
Recticel Eurothane GP (2.4m x 1.2m) All Sizes
Free Delivery
on orders over £300
Recticel
Recticel Eurothane GP (2.4m x 1.2m) All Sizes
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
70mm Celotex GA4070 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
70mm Celotex GA4070 2.4m x 1.2m
£24.09£28.91
Was £0.00
£24.09 £28.91
Sold out
EPS 70 (All Sizes) 2400mm x 1200mm
Insulation4Less
EPS 70 (All Sizes) 2400mm x 1200mm
£44.95£53.94
Was £0.00
£44.95 £53.94
Sold out
150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm
Free Delivery
on orders over £300
Celotex
150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm
£44.90£53.88
Was £0.00
£44.90 £53.88
Sold out
Celotex 60mm GA4060 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 60mm GA4060 2.4m x 1.2m
£22.30£26.76
Was £0.00
£22.30 £26.76
Sold out
90mm Celotex GA4090 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
90mm Celotex GA4090 2.4m x 1.2m
£29.65£35.58
Was £0.00
£29.65 £35.58
Sold out
Celotex 30mm TB4030 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 30mm TB4030 2.4m x 1.2m
£13.30£15.96
Was £0.00
£13.30 £15.96
Sold out
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
Free Delivery
on orders over £300
Kingspan
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
£106.95£128.34
Was £0.00
£106.95 £128.34
Sold out
80mm Celotex GA4080 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
80mm Celotex GA4080 2.4m x 1.2m
£27.45£32.94
Was £0.00
£27.45 £32.94
Sold out
Mannok Insulation Board 1.2m x 2.4m (All Sizes)
Mannok
Mannok Insulation Board 1.2m x 2.4m (All Sizes)
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
Call to enquire
12mm Celotex TB4012 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
12mm Celotex TB4012 2.4m x 1.2m
£0.00£0.00
Was £0.00
£0.00 £0.00
Sold out
Danosa Danopren TR XPS Insulation 600mm x 1250mm - All Sizes
Danosa
Danosa Danopren TR XPS Insulation 600mm x 1250mm - All Sizes
£43.40£52.08
Was £0.00
£43.40 £52.08
Sold out
Call to enquire
Celotex 20mm TB4020 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 20mm TB4020 2.4m x 1.2m
£12.72£15.26
Was £0.00
£12.72 £15.26
Sold out
140mm Celotex XR4140 Insulation Board 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
140mm Celotex XR4140 Insulation Board 2.4m x 1.2m
£44.95£53.94
Was £0.00
£44.95 £53.94
Sold out
Kingspan GreenGuard GG300 1.25m x 0.6m - All Sizes
Free Delivery
on orders over £300
Kingspan
Kingspan GreenGuard GG300 1.25m x 0.6m - All Sizes
£49.86£59.83
Was £0.00
£49.86 £59.83
Sold out
Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm
Free Delivery
on orders over £300
Kingspan
Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm
£285.00£342.00
Was £0.00
£285.00 £342.00
Sold out
EcoTherm Eco-Versal Insulation Board 2.4m x 1.2m - All Thicknesses
Free Delivery
on orders over £300
Ecotherm
EcoTherm Eco-Versal Insulation Board 2.4m x 1.2m - All Thicknesses
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
Celotex 110mm XR4110 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
Celotex 110mm XR4110 2.4m x 1.2m
£38.50£46.20
Was £0.00
£38.50 £46.20
Sold out
130mm Celotex XR4130 2.4m x 1.2m
Free Delivery
on orders over £300
Celotex
130mm Celotex XR4130 2.4m x 1.2m
£43.95£52.74
Was £0.00
£43.95 £52.74
Sold out
Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12)
Free Delivery
on orders over £300
Celotex
Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12)
£778.00£933.60
Was £0.00
£778.00 £933.60
Sold out
Unilin Thin-R 2.4m x 1.2m (All Sizes)
Unilin
Unilin Thin-R 2.4m x 1.2m (All Sizes)
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
PIR-Plywood Laminate Insulation Board (All Sizes) - 2.4m x 1.2m
Mannok
PIR-Plywood Laminate Insulation Board (All Sizes) - 2.4m x 1.2m
£1,283.33£1,540.00
Was £0.00
£1,283.33 £1,540.00
Sold out
Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12)
Free Delivery
on orders over £300
Celotex
Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12)
£935.40£1,122.48
Was £0.00
£935.40 £1,122.48
Sold out
Call to enquire
Ballytherm 2.4m x 1.2m - All Sizes
Ballytherm
Ballytherm 2.4m x 1.2m - All Sizes
£16.20£19.44
Was £0.00
£16.20 £19.44
Sold out
Call to enquire
Safe-R 2.4m x 1.2m (All Sizes)
Unilin
Safe-R 2.4m x 1.2m (All Sizes)
£0.00£0.00
Was £0.00
£0.00 £0.00
Sold out
Danosa 75mm XPS Concrete Slab Grey - 500mm x 500mm
Danosa
Danosa 75mm XPS Concrete Slab Grey - 500mm x 500mm
£10.56£12.67
Was £0.00
£10.56 £12.67
Sold out
Call to enquire
Basf Styrodur Xps (1265mm x 615mm) All Sizes
BASF
Basf Styrodur Xps (1265mm x 615mm) All Sizes
£78.02£93.62
Was £0.00
£78.02 £93.62
Sold out
Call to enquire
Kingspan GreenGuard GG500 600mm x 1250mm - All Sizes
Free Delivery
on orders over £300
Kingspan
Kingspan GreenGuard GG500 600mm x 1250mm - All Sizes
£8.46£10.15
Was £0.00
£8.46 £10.15
Sold out
Unilin Thin-R PIR 125mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 125mm x 2.4m x 1.2m
£51.95£62.34
Was £0.00
£51.95 £62.34
Sold out
Unilin Thin-R PIR 30mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 30mm x 2.4m x 1.2m
£13.30£15.96
Was £0.00
£13.30 £15.96
Sold out
Unilin Thin-R PIR 25mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 25mm x 2.4m x 1.2m
£11.17£13.40
Was £0.00
£11.17 £13.40
Sold out
Unilin Thin-R PIR 150mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 150mm x 2.4m x 1.2m
£44.90£53.88
Was £0.00
£44.90 £53.88
Sold out
Unilin Thin-R PIR 140mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 140mm x 2.4m x 1.2m
£44.95£53.94
Was £0.00
£44.95 £53.94
Sold out
Unilin Thin-R PIR 130mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 130mm x 2.4m x 1.2m
£43.95£52.74
Was £0.00
£43.95 £52.74
Sold out
Unilin Thin-R PIR 120mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 120mm x 2.4m x 1.2m
£35.90£43.08
Was £0.00
£35.90 £43.08
Sold out
Unilin Thin-R PIR 100mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 100mm x 2.4m x 1.2m
£28.99£34.79
Was £0.00
£28.99 £34.79
Sold out
Unilin Thin-R PIR 90mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 90mm x 2.4m x 1.2m
£29.65£35.58
Was £0.00
£29.65 £35.58
Sold out
Unilin Thin-R PIR 80mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 80mm x 2.4m x 1.2m
£27.45£32.94
Was £0.00
£27.45 £32.94
Sold out
Unilin Thin-R PIR 75mm x 2.4m x 1.2m
Unilin
Unilin Thin-R PIR 75mm x 2.4m x 1.2m
£23.65£28.38
Was £0.00
£23.65 £28.38
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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