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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!
Unilin Thin-R PIR 70mm x 2.4m x 1.2m
Unilin Thin-R PIR 70mm x 2.4m x 1.2m Floor Insulation
Vendor
Unilin
Regular price
from £29.76 £35.71
Sale price
from £29.76 £35.71
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£0.00
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Unilin Thin-R PIR 60mm x 2.4m x 1.2m
Unilin Thin-R PIR 60mm x 2.4m x 1.2m Floor Insulation
Vendor
Unilin
Regular price
from £26.13 £31.36
Sale price
from £26.13 £31.36
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£0.00
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Unilin Thin-R PIR 50mm x 2.4m x 1.2m
Unilin Thin-R PIR 50mm x 2.4m x 1.2m Wall Insulation
Vendor
Unilin
Regular price
from £20.45 £24.54
Sale price
from £20.45 £24.54
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£0.00
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Unilin Thin-R PIR 40mm x 2.4m x 1.2m
Unilin Thin-R PIR 40mm x 2.4m x 1.2m Floor Insulation
Vendor
Unilin
Regular price
from £20.14 £24.17
Sale price
from £20.14 £24.17
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£0.00
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Window and Door Filler Untied 200m Roll
Window and Door Filler Untied 200m Roll Insulation
Vendor
Sheepwool
Regular price
£75.55 £90.66
Sale price
£75.55 £90.66
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£0.00
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Sheepwool Lose Wool - 5Kg Pack
Sheepwool Lose Wool - 5Kg Pack Insulation
Vendor
Sheepwool
Regular price
£41.66 £49.99
Sale price
£41.66 £49.99
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£0.00
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Kingspan Kooltherm K106 90mm x 1.2m x 0.45m (2.16m2)
Kingspan Kooltherm K106 90mm x 1.2m x 0.45m All Insulation
Vendor
Kingspan
Regular price
£82.50 £99.00
Sale price
£82.50 £99.00
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£0.00
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Kingspan Kooltherm K107 Pitched Roof Board (All Sizes) - 2.4m x 1.2m
Kingspan Kooltherm K107 Pitched Roof Board (All Sizes) - 2.4m x 1.2m Roof Insulation
Vendor
Kingspan
Regular price
from £236.54 £283.85
Sale price
from £236.54 £283.85
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£0.00
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Kingspan Kooltherm K108 Cavity Board (All Sizes) 1200mm x 450mm
Kingspan Kooltherm K108 Cavity Board (All Sizes) 1200mm x 450mm All Insulation
Vendor
Kingspan
Regular price
from £96.50 £115.80
Sale price
from £96.50 £115.80
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£0.00
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Kingspan Kooltherm K110 Soffit Board (All Sizes) - 2.4m x 1.2m
Kingspan Kooltherm K110 Soffit Board (All Sizes) - 2.4m x 1.2m All Insulation
Vendor
Kingspan
Regular price
from £0.00 £0.00
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from £0.00 £0.00
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£0.00
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Kingspan Kooltherm K112 Framing Board (All Sizes) - 2.4m x 1.2m
Kingspan Kooltherm K112 Framing Board (All Sizes) - 2.4m x 1.2m Wall Insulation
Vendor
Kingspan
Regular price
from £299.99 £359.99
Sale price
from £299.99 £359.99
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£0.00
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Kingspan Kooltherm K118 Insulated Plasterboard (All Sizes) 2.4m x 1.2m (Price Per Pallet)
Kingspan Kooltherm K118 Insulated Plasterboard (All Sizes) 2.4m x 1.2m All Insulation
Vendor
Kingspan
Regular price
from £919.63 £1,103.56
Sale price
from £919.63 £1,103.56
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Kingspan Kooltherm K12 Framing Board (All Sizes) - 2.4m x 1.2m
Kingspan Kooltherm K12 Framing Board (All Sizes) - 2.4m x 1.2m All Insulation
Vendor
Kingspan
Regular price
from £252.36 £302.83
Sale price
from £252.36 £302.83
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£0.00
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Kingspan Kooltherm K15 Rainscreen Board (All Sizes) 2.4m x 1.2m
Kingspan Kooltherm K15 Rainscreen Board (All Sizes) 2.4m x 1.2m All Insulation
Vendor
Kingspan
Regular price
£0.00 £0.00
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£0.00 £0.00
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£0.00
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Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm
Kingspan Thermaroof TR26 Flat Roof Board (All Sizes) 2400mm x 1200mm All Insulation
Vendor
Kingspan
Regular price
from £0.00 £0.00
Sale price
from £0.00 £0.00
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£0.00
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Kingspan Thermaroof TR27 Flat Roof Board - All Sizes
Kingspan Thermaroof TR27 Flat Roof Board - All Sizes All Insulation
Vendor
Kingspan
Regular price
from £83.12 £99.74
Sale price
from £83.12 £99.74
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£0.00
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IKO Enertherm ALU PIR 2.4m x 1.2m - All Sizes
IKO Enertherm ALU PIR 2.4m x 1.2m - All Sizes Insulation Board
Vendor
IKO PIR
Regular price
from £14.07 £16.88
Sale price
from £14.07 £16.88
Regular price
£0.00
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Kingspan Thermataper TT46
Kingspan Thermataper TT46
Vendor
Kingspan
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
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£0.00
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Kingspan Thermataper TT47
Kingspan Thermataper TT47
Vendor
Kingspan
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
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Recticel Eurowall+ Full-Fill Cavity 1.2m x 0.46m
Recticel Eurowall+ Full-Fill Cavity 1.2m x 0.46m
Vendor
Recticel
Regular price
from £470.99 £565.19
Sale price
from £470.99 £565.19
Regular price
£0.00
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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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