Insulation

Are you in the market to buy insulation? Look no further than Insulation4less! We've got a great selection of insulating materials for sale, so you can find the perfect product for your needs. Whether you're looking to insulate your attic or garage, or you want to make sure your home is well insulated, we've got you covered. Check out our selection today!

Huge range from all the top brands. Suitable for all applications from floor, roof, loft, wall and more. Lowest prices available online. Need expert advice? Contact us by phone on 020 3582 6399, or
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Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes)
Celotex GA4000 General Purpose PIR Insulation Board 2.4m x 1.2m (All Sizes) Floor Insulation
Vendor
Celotex
Regular price
from £11.90 £14.28
Sale price
from £11.90 £14.28
Regular price
£0.00
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Knauf Bonding Compound Plasterboard Adhesive 25kg
Knauf Bonding Compound Plasterboard Adhesive 25kg All Insulation
Vendor
Knauf
Regular price
£9.23 £11.08
Sale price
£9.23 £11.08
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£0.00
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Celotex 30mm TB4030 2.4m x 1.2m
Celotex 30mm TB4030 2.4m x 1.2m Floor Insulation
Vendor
Celotex
Regular price
£14.10 £16.92
Sale price
£14.10 £16.92
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£0.00
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Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m
Kingspan Thermafloor TF70 Floor Board (All Sizes) 2.4m x 1.2m Floor Insulation
Vendor
Kingspan
Regular price
from £107.90 £129.48
Sale price
from £107.90 £129.48
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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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Tyvek Housewrap 100m x 1.4m
Tyvek Housewrap 100m x 1.4m All Insulation
Vendor
Tyvek
Regular price
£110.41 £132.49
Sale price
£110.41 £132.49
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£0.00
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Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm
Kingspan Kooltherm K103 Floorboard (All Sizes) 2400mm x 1200mm Floor Insulation
Vendor
Kingspan
Regular price
from £275.46 £330.55
Sale price
from £275.46 £330.55
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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 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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Round Thermahood Downlight Cover
Round Thermahood Downlight Cover All Insulation
Vendor
Thermahood
Regular price
£6.25 £7.50
Sale price
£6.25 £7.50
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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
£82.02 £98.42
Sale price
£82.02 £98.42
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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 £913.40 £1,096.08
Sale price
from £913.40 £1,096.08
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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
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£0.00
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Thermaclass Cavity Wall 21 (1190mm x 450mm) - All Sizes
Thermaclass Cavity Wall 21 (1190mm x 450mm) - All Sizes Insulation
Vendor
Celotex
Regular price
from £1,122.22 £1,346.66
Sale price
from £1,122.22 £1,346.66
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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 £94.85 £113.82
Sale price
from £94.85 £113.82
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£0.00
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Enhanced EPS 1200mm x 600mm - All Sizes
Enhanced EPS 1200mm x 600mm - All Sizes External Wall Insulation
Vendor
Jablite
Regular price
from £52.84 £63.41
Sale price
from £52.84 £63.41
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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 £296.29 £355.55
Sale price
from £296.29 £355.55
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£0.00
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Actis Hybris 1200mm x 1145mm - All Sizes
Actis Hybris 1200mm x 1145mm - All Sizes All Insulation
Vendor
Actis
Regular price
from £814.40 £977.28
Sale price
from £814.40 £977.28
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£0.00
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Square Thermahood Downlight Cover
Square Thermahood Downlight Cover All Insulation
Vendor
Thermahood
Regular price
£6.25 £7.50
Sale price
£6.25 £7.50
Regular price
£0.00
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Rectangle Thermahood Downlight Cover
Rectangle Thermahood Downlight Cover All Insulation
Vendor
Thermahood
Regular price
£6.25 £7.50
Sale price
£6.25 £7.50
Regular price
£0.00
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Kingspan Nilvent Breathable Membrane (75m2 roll)
Kingspan Nilvent Breathable Membrane (75m2 roll) All Insulation
Vendor
Kingspan
Regular price
£114.35 £137.22
Sale price
£114.35 £137.22
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£0.00
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HControl Hybrid 45mm x 1.6m x 6.25m (Roll size 10m2)
HControl Hybrid 45mm x 1.6m x 6.25m (Roll size 10m2) All Insulation
Vendor
Actis
Regular price
£79.33 £95.20
Sale price
£79.33 £95.20
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£0.00
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Breathaplasta Universal Breathable Plaster x 20Kg
Breathaplasta Universal Breathable Plaster x 20Kg Plaster
Vendor
Adaptavate
Regular price
from £17.99 £21.59
Sale price
from £17.99 £21.59
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£0.00
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Knauf Rocksilk Flexible Slab (All Sizes) 1200mm x 600mm
Knauf Earthwool Flexible Slab 600mm x 1200mm - All Sizes All Insulation
Vendor
Knauf
Regular price
from £349.80 £419.76
Sale price
from £349.80 £419.76
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£0.00
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Knauf XPS Thermal Laminate Plus 1.2m x 2.4m - All Sizes (Price Per Pallet)
Knauf XPS Thermal Laminate Plus 1.2m x 2.4m - All Sizes Plasterboard
Vendor
Knauf
Regular price
from £1,181.49 £1,417.79
Sale price
from £1,181.49 £1,417.79
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£0.00
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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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Masonry Fixings 10mm (Box of 200) - All Sizes
Masonry Fixings 10mm (Box of 200) - All Sizes External Wall Insulation
Vendor
Insulation4Less
Regular price
from £22.27 £26.72
Sale price
from £22.27 £26.72
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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
Sale price
from £0.00 £0.00
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£0.00
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Knauf EPS Thermal Laminate 1.2m x 2.4m T/E - All Sizes (Price Per Pallet)
Knauf Thermal Laminate 1.2m x 2.4m T/E - All Sizes Plasterboard
Vendor
Knauf
Regular price
from £882.52 £1,059.02
Sale price
from £882.52 £1,059.02
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£0.00
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IKO Enertherm ALU 50mm x 2.4m x 1.2m
IKO Enertherm ALU 50mm x 2.4m x 1.2m Insulation Board
Vendor
IKO PIR
Regular price
£20.79 £24.95
Sale price
£20.79 £24.95
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£0.00
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IKO Enertherm ALU 100mm x 2.4m x 1.2m
IKO Enertherm ALU 100mm x 2.4m x 1.2m Insulation Board
Vendor
IKO PIR
Regular price
£35.15 £42.18
Sale price
£35.15 £42.18
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£0.00
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Breathaplasta Smooth Finishing Plaster x 20Kg
Breathaplasta Smooth Finishing Plaster x 20Kg
Vendor
Adaptavate
Regular price
from £20.99 £25.19
Sale price
from £20.99 £25.19
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£0.00
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Aluminium 2.5m Starter Track/ Base Profile - All Sizes
Aluminium 2.5m Starter Track/ Base Profile - All Sizes External Wall Insulation
Vendor
Wetherby
Regular price
from £7.59 £9.11
Sale price
from £7.59 £9.11
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£0.00
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Recticel Eurothane PL (2.4m x 1.2m) All Sizes
Recticel Eurothane PL (2.4m x 1.2m) All Sizes Insulation
Vendor
Recticel
Regular price
from £47.22 £56.66
Sale price
from £47.22 £56.66
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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
Sale price
£0.00 £0.00
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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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Thermaroof TR24 (All Sizes) 1200mm x 600mm
Thermaroof TR24 (All Sizes) 1200mm x 600mm 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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UV Facade Tape - 60mm x 25m
UV Facade Tape - 60mm x 25m
Vendor
Powerlon
Regular price
£20.45 £24.54
Sale price
£20.45 £24.54
Regular price
£0.00
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Rockwool Rainscreen Duo Slab (All Sizes)
Rockwool Rainscreen Duo Slab (All Sizes) External Wall Insulation
Vendor
Rockwool
Regular price
from £822.65 £987.18
Sale price
from £822.65 £987.18
Regular price
£0.00
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per 
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K-Roc Rainscreen Slab (1.2m x 0.6m) - All Sizes
K-Roc Rainscreen Slab (1.2m x 0.6m) - All Sizes Insulation Board
Vendor
Kingspan
Regular price
from £61.06 £73.27
Sale price
from £61.06 £73.27
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£0.00
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Knauf RS140 (600mm x 1200mm) - All Sizes
Knauf Earthwool RS140 (600mm x 1200mm) - All Sizes Loft Insulation
Vendor
Knauf
Regular price
£0.00 £0.00
Sale price
£0.00 £0.00
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£0.00
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Superfoil SFBA BB 4mm x 1.35m x 50m
Superfoil SFBA BB 4mm x 1.35m x 50m Insulation
Vendor
Superfoil
Regular price
£157.41 £188.89
Sale price
£157.41 £188.89
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£0.00
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IKO Enertherm ALU 150mm x 2.4m x 1.2m
IKO Enertherm ALU 150mm x 2.4m x 1.2m Insulation Board
Vendor
IKO PIR
Regular price
£53.52 £64.22
Sale price
£53.52 £64.22
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£0.00
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IKO Enertherm ALU 90mm x 2.4m x 1.2m
IKO Enertherm ALU 90mm x 2.4m x 1.2m Insulation Board
Vendor
IKO PIR
Regular price
£35.21 £42.25
Sale price
£35.21 £42.25
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£0.00
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IKO Enertherm ALU 75mm x 2.4m x 1.2m
IKO Enertherm ALU 75mm x 2.4m x 1.2m Insulation Board
Vendor
IKO PIR
Regular price
£29.73 £35.68
Sale price
£29.73 £35.68
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£0.00
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IKO Enertherm ALU 25mm x 2.4m x 1.2m
IKO Enertherm ALU 25mm x 2.4m x 1.2m Insulation Board
Vendor
IKO PIR
Regular price
£14.07 £16.88
Sale price
£14.07 £16.88
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£0.00
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Breathaplasta Thermal Insulating Plaster x 9Kg
Breathaplasta Thermal Insulating Plaster x 9Kg Plaster
Vendor
Adaptavate
Regular price
from £18.50 £22.20
Sale price
from £18.50 £22.20
Regular price
£0.00
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Kingspan Aquazone Infiltration (300M2 per roll)
Kingspan Aquazone Infiltration (300M2 per roll) All Insulation
Vendor
Kingspan
Regular price
£602.04 £722.45
Sale price
£602.04 £722.45
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£0.00
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WHAT IS INSULATION?

 

Insulation is a process to keep sound, electricity and heat from spreading. A material specially designed to prevent the transmission of heat or sound from one space to other is known as insulation material. The ultimate purpose of insulation is to create a barrier around the building which helps in reduction of the amount of heating needed on a cold day or vice versa. All year round you can keep the desired temperature in your house by the help of insulation.

 

HOW DOES INSULATION WORK?

 

You will need to understand heat flow if you want to understand how insulation works. Heat is transmitted in three different way like convection, conduction, and radiation. Thermal insulation works by restricting the movement of heat in any form providing a much more comfortable place to live in.

The combination of these two characteristics plays a main role in the quality of insulation

The natural capacity of insulation material to inhibit the transmission of heat.

Natural insulants which are trapped inside the pockets of insulation material.

 

WHAT ARE THE 3 TYPES OF INSULATION?

 

The 3 types of insulation are thermal insulation, sound insulation, and fire insulation.

 

Thermal insulation

Thermal insulation prevents or reduce heat loss and reduces the amount of money and gas and electricity we use to do this. With ever-rising energy costs if the house is properly insulated it can save up to 2/3 of the energy required.

 

Acoustic insulation

The sound that causes trouble to others is nothing but undesirable an unaccepted sound. Acoustic insulation is also known as sound insulation or soundproof insulation. The purpose of acoustic insulation is to block or decrease the intensity of soundwaves transmitting from outside the house to a room inside or vice versa.

 

Fire-resistant insulation

Fire-resistant insulation material slows the spread of fire and protects the building. Fire-resistant insulation material is specially designed to resist high temperature and ensure no toxic smoke is released if it does come in contact with flames.

Fire resistance is classified in various ratings as follows

 

A1- non-combustible

A2- limited combustible

B-F - Low- high contribution to fire.

 

Another thing you may wish to consider when looking to reduce your heating bills is to use efficient doors and windows. A customer reported big improvements in their heating costs by installing a upvc door in their kitchen. There is no point in insulating your house if you let your heating escape straight into the garden and out onto the decking due to poor ventilation! It is definitely one to add to the list.

 

 

Why should you insulate

Reduces heating and energy cost

Control condensation

Lowers carbon footprint

Reduces the amount of noise

Increases fire-resistant of your house

Increases the value of your domestic property

Increases comfort

 

INSTALLING LOFT INSULATION

 

Loft insulation is the easiest way to improve comfort and save money in your home.

 

A well-insulated loft has many benefits including reducing heat loss through the roof. That means you'll have a cosier home which will reduce your heating costs.

 

Choosing loft insulation

 

There are different types of loft insulation and they vary in cost and performance. So choose the one which best suits your needs.

The insulation typically comes in rolls or slabs which are pre-cut at common widths. Popular brands include Isover and Knauf.

 

For more information on choosing loft insulation, see our loft insulation page. We also sell a huge range of roofing products such as roofing membranes and roofing tiles on our sister site Build4less.

 

Many people choose to install loft insulation themselves, as it works out much cheaper and is an easy job for most people. (Be warned - installing loft insulation is a messy job and you should definitely wear a mask, goggles and gloves!)

 

The first step is to measure your loft. You can then work out how much material you need (see our guide on measuring). Homeowners typically look to use two layers of a fibreglass type loft roll insulation. The benefits here include cheaper costs and it's easily installed. Other options include using rigid insulation board in the floors (or ceilings in a room in roof situation). The insulation industry is starting to use spray foams and other types of foam insulation such as polyurethane foam in the roof space. This provides better insulation but it's not a DIY job.

 

You might also consider boarding your loft at the same time, it's a smart way to add extra storage for your tools and household accessories.

Just be careful of electric cables. Electric cables are generally fine to cover with loft roll insulation, but you should consult with an electrician to be sure.  

 

For more detailed information see our diy loft insulation page.

 

CAVITY WALL INSULATION

 

Insulating cavity walls is an effective way to lower energy bills by reducing the amount of heat that escapes from your home. It's also one of the most popular retrofit options.

 

All new builds must insulate their cavity walls to meet building regulations.

 

New builds typically use pir insulation or another similar insulation board to insulate because you have access while building. This offers the best performance for the cost.

 

For an existing home, the installation involves using a spray such as beads or spray foam which can be pumped into the walls. This is a technical process and the user needs to be well trained and used to the process in order to get the best results.

 

For our full range of cavity wall options for new builds, click here.

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