Insulation

We have a huge range of insulation from all the top brands, covering all applications from floor, roof, loft, wall and more. Browse below or contact Build4less on Live Chat or by phone 020 3481 1978 if you need guidance
T-Barrier Masonry (vertical) - All Sizes
T-Barrier Masonry (vertical) - All Sizes - ARC Insulation
Vendor
ARC
Regular price
from £78.81 £94.57
Sale price
from £78.81 £94.57
Regular price
£0.00
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Party Wall DPC L-Shape - All Sizes
Party Wall DPC L-Shape - All Sizes - ARC Insulation
Vendor
ARC
Regular price
from £81.60 £97.92
Sale price
from £81.60 £97.92
Regular price
£0.00
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Party Wall DPC Horizontal - All Sizes
Party Wall DPC Horizontal 1200mm x 260mm - All Sizes - ARC Insulation
Vendor
ARC
Regular price
from £88.85 £106.62
Sale price
from £88.85 £106.62
Regular price
£0.00
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Party Wall DPC Vertical - All Sizes
Party Wall DPC Vertical - All Sizes - ARC Insulation
Vendor
ARC
Regular price
from £86.96 £104.35
Sale price
from £86.96 £104.35
Regular price
£0.00
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Party Wall TCB White - All Sizes
Party Wall TCB White 250mm x 1200mm - All Sizes - ARC Insulation
Vendor
ARC
Regular price
from £60.94 £73.13
Sale price
from £60.94 £73.13
Regular price
£0.00
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Timber to Timber Cavity Barrier Yellow 150mm x 1200mm - All Sizes
Timber to Timber Cavity Barrier Yellow 150mm x 1200mm - All Sizes - ARC Insulation
Vendor
ARC
Regular price
from £82.52 £99.02
Sale price
from £82.52 £99.02
Regular price
£0.00
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per 
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Warmline PHE Insulated Plasterboard 1.2m x 2.4m - All Sizes
Vendor
Warmline
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
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per 
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Warmline EPS Insulated Plasterboard 1.2m x 2.4m - All Sizes
Vendor
Warmline
Regular price
from £1,009.07 £1,210.88
Sale price
from £1,009.07 £1,210.88
Regular price
£0.00
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per 
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Knauf RS100 (600mm x 1200mm) - All Sizes
Knauf Earthwool RS100 (600mm x 1200mm) - All Sizes - Knauf Earthwool Insulation
Vendor
Knauf
Regular price
from £545.00 £654.00
Sale price
from £545.00 £654.00
Regular price
£0.00
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per 
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Knauf RS45 (All Sizes) 600mm x 1200mm
Knauf Earthwool RS45 (All Sizes) 600mm x 1200mm - Knauf Earthwool Insulation
Vendor
Knauf
Regular price
from £27.35 £32.82
Sale price
from £27.35 £32.82
Regular price
£0.00
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per 
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Knauf Timber Frame Party Wall Slab (All Sizes)
Vendor
Knauf
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
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Knauf SteelTherm Roll 40 (All Sizes)
Knauf Earthwool SteelTherm Roll 40 (All Sizes) - Knauf Earthwool Insulation
Vendor
Knauf
Regular price
from £1,999.99 £2,399.99
Sale price
from £1,999.99 £2,399.99
Regular price
£0.00
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per 
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Knauf RS140 (600mm x 1200mm) - All Sizes
Knauf Earthwool RS140 (600mm x 1200mm) - All Sizes - Knauf Earthwool Insulation
Vendor
Knauf
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
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per 
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Knauf DriTherm Cavity Slab 34 (All Sizes)
Knauf Earthwool DriTherm 34 (All Sizes) - Knauf Earthwool Insulation
Vendor
Knauf
Regular price
from £1,059.00 £1,270.80
Sale price
from £1,059.00 £1,270.80
Regular price
£0.00
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per 
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Knauf Frametherm Slab - All Sizes
Knauf Frametherm Slab - All Sizes
Vendor
Knauf
Regular price
from £0.00 £0.00
Sale price
from £0.00 £0.00
Regular price
£0.00
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Knauf OmniFit Roll - All Sizes
Knauf Earthwool OmniFit Roll - All Sizes
Vendor
Knauf
Regular price
£1,048.00 £1,257.60
Sale price
£1,048.00 £1,257.60
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£0.00
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Knauf OmniFit Roll 34 - All Sizes
Vendor
Knauf
Regular price
from £2,320.00 £2,784.00
Sale price
from £2,320.00 £2,784.00
Regular price
£0.00
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Karma Regupol E48
Vendor
Karma
Regular price
£219.95 £263.94
Sale price
£219.95 £263.94
Regular price
£0.00
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per 
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Karma Regupol 7210c 5mm x 2.25m x 1.15m
Vendor
Karma
Regular price
£16.95 £20.34
Sale price
£16.95 £20.34
Regular price
£0.00
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per 
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Karma Regupol 4515 Eco 3mm
Vendor
Karma
Regular price
£149.75 £179.70
Sale price
£149.75 £179.70
Regular price
£0.00
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per 
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Karma Regupol 4515 Multi 4.5mm
Vendor
Karma
Regular price
£188.30 £225.96
Sale price
£188.30 £225.96
Regular price
£0.00
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Karma Regupol 4515 Multi 3mm
Vendor
Karma
Regular price
£153.30 £183.96
Sale price
£153.30 £183.96
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£0.00
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per 
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Karma Regupol 3912
Vendor
Karma
Regular price
£164.95 £197.94
Sale price
£164.95 £197.94
Regular price
£0.00
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per 
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Karma Acoustic Barrier WB
Vendor
Karma
Regular price
from £17.85 £21.42
Sale price
from £17.85 £21.42
Regular price
£0.00
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Karma Easy Tape 50m x 50mm
Vendor
Karma
Regular price
£10.45 £12.54
Sale price
£10.45 £12.54
Regular price
£0.00
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per 
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Karma Easypanel 15mm x 1200mm x 800mm
Vendor
Karma
Regular price
£34.05 £40.86
Sale price
£34.05 £40.86
Regular price
£0.00
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per 
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Profloor Micro Deck 17 Hi-Load 1.2m x 600mm x 17mm
Vendor
Proctor
Regular price
£21.12 £25.34
Sale price
£21.12 £25.34
Regular price
£0.00
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Profloor Solo Deck 23 23mm x 600mm x 2.4m
Vendor
Proctor
Regular price
£33.62 £40.34
Sale price
£33.62 £40.34
Regular price
£0.00
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per 
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Profloor Excel Deck 31 Hi-Load 31mm x 600mm x 2.4m
Vendor
Proctor
Regular price
£36.92 £44.30
Sale price
£36.92 £44.30
Regular price
£0.00
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per 
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Black Mountain Natuwool Batts 1200mm x 600mm x 150mm
Vendor
Black Mountain
Regular price
£53.12 £63.74
Sale price
£53.12 £63.74
Regular price
£0.00
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per 
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ALUMAFLEX 12 M2 ROLL
Vendor
Alumaflex
Regular price
£81.25 £97.50
Sale price
£81.25 £97.50
Regular price
£0.00
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per 
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Kingspan Aquazone Infiltration (300m2 per roll)
Vendor
Kingspan
Regular price
£575.00 £690.00
Sale price
£575.00 £690.00
Regular price
£0.00
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per 
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Kingspan Nilvent Breathable Membrane (75m2 roll)
Vendor
Kingspan
Regular price
£117.45 £140.94
Sale price
£117.45 £140.94
Regular price
£0.00
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per 
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Celotex CW4100 100mm
Celotex CW4100 100mm - Celotex Insulation
Vendor
Celotex
Regular price
£44.60 £53.52
Sale price
£44.60 £53.52
Regular price
£0.00
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per 
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Isover Party Wall Roll 100mm (28 Rolls)
Vendor
Isover
Regular price
£1,399.00 £1,678.80
Sale price
£1,399.00 £1,678.80
Regular price
£0.00
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per 
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Celotex CW4075 75mm x 1200mm x 450mm
Celotex CW4075 75mm x 1200mm x 450mm - Celotex Insulation
Vendor
Celotex
Regular price
£47.55 £57.06
Sale price
£47.55 £57.06
Regular price
£0.00
Unit price
per 
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OPTIM-R Roofing System
OPTIM-R Roofing System - Kingspan Insulation
Vendor
Kingspan
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
Unit price
per 
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Rockwool Roll 170mm
Vendor
Rockwool
Regular price
£753.47 £904.16
Sale price
£753.47 £904.16
Regular price
£0.00
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per 
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Rockwool Twin Roll 100mm x 2.75m x 1.2m (x 2) (6.60m2)
Vendor
Rockwool
Regular price
£69.95 £83.94
Sale price
£69.95 £83.94
Regular price
£0.00
Unit price
per 
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Unilin Thin-R PIR 30mm x 2.4m x 1.2m
Unilin Thin-R PIR 30mm x 2.4m x 1.2m - Unilin Insulation
Vendor
Unilin
Regular price
£12.50 £15.00
Sale price
£12.50 £15.00
Regular price
£0.00
Unit price
per 
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Thin-R Cavity 60mm
Vendor
Unilin
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
Regular price
£0.00
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per 
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Celotex CW4060 60mm
Celotex CW4060 60mm - Celotex Insulation
Vendor
Celotex
Regular price
£87.91 £105.49
Sale price
£87.91 £105.49
Regular price
£0.00
Unit price
per 
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Celotex CW4050 50mm
Celotex CW4050 50mm - Celotex Insulation
Vendor
Celotex
Regular price
£44.60 £53.52
Sale price
£44.60 £53.52
Regular price
£0.00
Unit price
per 
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Celotex CW4040 40mm
Celotex CW4040 40mm - Celotex Insulation
Vendor
Celotex
Regular price
£84.22 £101.06
Sale price
£84.22 £101.06
Regular price
£0.00
Unit price
per 
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140mm Celotex XR4140 2.4m x 1.2m
140mm Celotex XR4140 2.4m x 1.2m - Celotex Insulation
Vendor
Celotex
Regular price
£42.50 £51.00
Sale price
£42.50 £51.00
Regular price
£0.00
Unit price
per 
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130mm Celotex XR4130 2.4m x 1.2m
130mm Celotex XR4130 2.4m x 1.2m - Celotex Insulation
Vendor
Celotex
Regular price
£41.50 £49.80
Sale price
£41.50 £49.80
Regular price
£0.00
Unit price
per 
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110mm Celotex XR4110 2.4m x 1.2m
110mm Celotex XR4110 2.4m x 1.2m - Celotex Insulation
Vendor
Celotex
Regular price
£37.00 £44.40
Sale price
£37.00 £44.40
Regular price
£0.00
Unit price
per 
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80mm Celotex GA4080 2.4m x 1.2m
80mm Celotex GA4080 2.4m x 1.2m - Celotex Insulation
Vendor
Celotex
Regular price
£26.20 £31.44
Sale price
£26.20 £31.44
Regular price
£0.00
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per 
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Insulation plays a crucial role in building construction, offering thermal efficiency, soundproofing, and fire resistance. Build4Less offers a comprehensive range of insulation products catering to various needs. Let's delve into the different types of insulation available and their practical uses.

Roof and Wall Insulation Panels

Composite Insulated Roof Panels

These panels, like the 333 Box Profile Composite, are ideal for roofing applications, offering excellent thermal performance and ease of installation. They come in various sizes and are suitable for both residential and commercial buildings.

General Purpose Insulation Boards

Products like Celotex GA4000 and Mannok Therm PIR boards are versatile and can be used in floors, walls, and roofs. These rigid boards provide high insulation values and are available in various thicknesses to meet different requirements.

Insulated Plasterboard

Insulated plasterboards, such as Celotex PL4000 and Kingspan Kooltherm, combine insulation and plasterboard, making them perfect for internal wall applications. They provide thermal insulation and a ready-to-decorate surface.

Specialised Insulation Products

Acoustic Insulation

Products like Knauf Acoustic Roll are designed to reduce sound transmission, making them ideal for use in walls and floors where sound insulation is a priority.

Thermal Bridging Boards

Celotex TB4000 is specifically designed to address thermal bridging, improving the energy efficiency of buildings by reducing heat loss at junctions and edges.

Aerogel Insulation

Spacetherm products, with their aerogel composition, offer superior thermal performance in a thinner profile, ideal for space-constrained applications.

Natural and Eco-Friendly Options

Sheepwool Insulation

100% Sheepwool Insulation rolls are an eco-friendly option, providing natural thermal and acoustic insulation. These are suitable for those looking for sustainable building materials.

Accessory Products

Foil Tape and Vapour Barriers

Foil tapes like SuperFOIL and Tyvek products are essential for sealing seams in foil-faced insulation to maintain continuity and performance. Vapour barriers help in controlling moisture ingress, enhancing the overall effectiveness of insulation.

Cavity Barriers and Firestops

Products like Timber Cavity Barrier and Party Wall Cavity Stop Socks are crucial for fire safety, preventing the spread of fire within cavity spaces.

Selecting the Right Insulation

When choosing insulation, consider the following:

  • Application Area: Roof, wall, or floor insulation have different requirements.
  • Thermal Performance: Higher R-values mean better insulation.
  • Acoustic Needs: If soundproofing is a concern, opt for specialised acoustic insulation.
  • Environmental Impact: Consider eco-friendly options like sheepwool for a lower environmental footprint.
  • Building Regulations: Ensure the product meets local building codes and regulations.

     

In conclusion, the right insulation product can significantly enhance the comfort, energy efficiency, and safety of a building. Build4Less offers a range of products to meet diverse insulation needs, ensuring quality and performance.

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