External wall insulation Prices

Compare External wall insulation Quotes

Home > Insulation Projects > External wall insulation

Average External wall insulation cost

External wall insulation is expensive but effective. Adding it as part of a project can reduce costs. You don't need to do the whole house, maybe just the front. Typically costs are around £5000-£9000.

 

Average price per External wall insulation job in 2026

Avg. price low

Avg. price low
£2,063

Avg. price

Avg. price
£5,282

Avg. price high

Avg. price high
£9,250

£9800

£7350

£4900

£2450

£0

Prices based on actual External wall insulation costs for your area, as reported by local LeadsDoWork members.

External wall insulation installation cost in your area 2026

Labour cost £3,000
Material cost £5,500
Waste removal £500
Time frame: 2 - 3 Days

Advantages for External wall insulation

  • Can be applied without disruption
  • Does not reduce the floor area of your home
  • Will improve weatherproofing and sound resistance
  • Reduces condensation on internal walls and can help prevent damp

Disadvantages for External wall insulation

  • May need planning permission
  • Requires good access to the outer walls
  • Is more costly than internal insulation

External wall insulation FAQs

How to get free external wall insulation?

This is a very great opportunity to not only get free external wall insulation, but also cut down your energy bills depending on the type of property you live in. Generally, to enjoy free external wall insulation you must at least be part of the group receiving one of the benefits listed below and also depends on the amount of money you earn. The benefits include:

• Income based jobseeker’s allowance (JSA)

• Income support

• Income-related employment and support allowance (ESA)

• Tax credits

• Pension credit guarantee credit.

• Universal credit.

There are also other important factors that determines if you can have a free insulation fitted on your property. These includes the place you reside, the carbon level of your home and according to some suppliers, the level of beneficial impact the insulation will have on your home. In order to have a free external wall insulation installed, you must either be the owner of your home or at least obtain the go ahead from your landlord before any external wall insulation activity can be made.

Good news is, if you fit the aforementioned criteria and you’ve already installed an external wall insulation, you just may be entitled to receive a refund for the good job done. However, to really find out if you’re eligible, we’d recommend you get in touch with your supplier directly. Also, the Energy Saving Trust (EST) can direct you to some organizations who can assist you in the determination of your eligibility.

As a home and property owner living in England, you can also check out the Each Home Counts Advice Website which is committed to giving impartial energy efficiency advice.

At the end of the day, if it turns out you happen to be ineligible for a free external wall insulation, you can still go ahead to contact a professional installer for a help at a competitive price to enjoy the several benefits that comes with home insulation.

Is external wall insulation safe?

With the numerous benefits that comes with the installation of an external wall insulation in a building, it’s also important to find out whether it’s also safe before proceeding to fit one in your home. Firstly, to ensure that external wall insulation systems are safe, they must be BBA approved, which means they’ve been subjected to a thorough testing by the British Board of Agrement and therefore, suitable for use in UK homes.

Given the fact that cladding materials have recently generated a lot of debate and negative press about how reliable some particular materials are, questions are being asked of the safety and reliability of external wall insulation. However we must clarify that, although external wall insulation can be classified under cladding, it is very different to rainscreen cladding - which caused the Grenfell fire tragedy.

External wall insulation is completely safe. However, when it comes to fire, the safety of your system depends largely on the insulation type in question. The safest type of insulation you can have installed is the Rockwool insulation boards which are rated as Euroclass A1 non-combustible. The board is specially designed in such a way that it contains fire - preventing it from reaching the other areas of the building. They also do not produce harmful emission or smoke when impacted by fire.

Meanwhile, the Wood Fibre, is also a great insulation which is known to char and not burn. Contrary to many beliefs, it actually burns slowly creating this charring effect which produces an oxygen barrier that helps reduce the spread of fire.

To make your system safer, you can also make use of Fibreglass Mesh for reinforcement. It helps to improve the strength of the tensile which promotes the security of the boards attached to the wall.

Are there grants available for external wall insulation?

External wall insulation works to keep your home cosy and comfy while also helping to cut the energy bills. However with the great benefits also comes great costs, so it’s actually a logical decision to know whether there are grants out there which you’re eligible for to help you handle the cost of the external wall insulation.

There are grants available for external wall insulation, but rarely will you find one that covers the full installation cost. With the help of the government’s Energy Company Obligation (ECO) scheme, a couple of energy companies assist in making your home more energy efficient by offering grants or free insulation. In certain cases whereby you receive particular state benefits, you may as well qualify for a higher grant that’ll cover more of the insulation cost.

However, if your energy supplier doesn’t offer any grant, you need not worry as you can save as much on energy bill after installation. Here’s what insulation can help you save per year on energy bills:

• Floor insulation can help you save within a range of £30 to £75 each year.

• Cavity wall insulation can help you save about £85 to £280 a year.

• Loft Insulation (270mm) can help you save about £135 to £250 a year.

Generally, the amount you’ll be able to save on your energy bills depends mainly on the type and size of your property, as well as how energy efficient it already is without the insulation. In the long run, your external wall insulation will more than give you back your investment on the valuable project through your savings on energy bills. In other words, whether or not you’re eligible for a grant should never stop you from installing an external wall insulation.

How much does external solid wall insulation cost?

Before the commencement of any project, it’s always best to get an estimation of the cost. However, determining the cost of an external solid wall insulation is not the easiest of tasks as it relies on varying components such as the insulation materials to be used, labour cost and installation as well as the type of decorative finish to be incorporated. And depending on your choice of insulation material, some may need some adhesives while others may require some fixings which also contributes to the differences in price. As a result, the determination of the material cost alone can be tricky and even more so when various materials cover varying areas.

With that in mind, the cost of external solid wall insulation generally ranges between £80 to £100 per square metre2. As a result, a small flat can cost from £6000 to £9000 whereas a large detached house can have a price ranging between £21000 to £23000. To earn back your investment in terms of energy bill savings can take a couple of years, but it’s surely worth the try as there are several other benefits associated with installing an external solid wall insulation system. What’s more? Another huge factor that can influence the cost of your system is also the amount of work that’s required, how easy it is to be accessed by the installers and lots more

If you’re looking to cut down on the cost of your external solid wall insulation, then the best time for an installation might just be when you’re having another decorating or building project done such as fitting a new roof, window painting, installation of solar PV panels and more. This way, you’ll be able to spread the cost and have a greater value for each penny expended.

How good is external wall insulation?

External Wall Insulation (EWI) is the act of insulating a home by fitting insulation to the exterior parts of the building which in turn improves thermal performance, cuts energy consumption ( savings on energy bill) and also adds to the home’s visual appeal. The systems are built in multiple layers, with the insulation board offering a plethora of options with each being suitable to varying projects and their needs. Installing an external wall insulation comes with a variety of benefits, let’s have a look!

• Thermal Performance Improvement

With EWI, the thermal inertia of the walls are greatly enhanced while also restricting the loss of heat. Ultimately, this lowers heating costs, enhances the comfort of indoor thermal and also reduces CO2 pollution.

• Eliminates Noise Pollution

When the noise levels are high, it can have a bad impact on our overall well being. A great way to reduce the disturbances from the outside like traffic noise is by fitting an External Wall Installation system.

• More Comfortable Living Space

Do you know the damp in homes can contribute to respiratory problems? A properly insulated home will greatly limit the impact of condensation by combating the damp issues. As a result, you can always expect your house to be cosy and comfy irrespective of the season. A cooler summer and warmer spring is guaranteed with EWI.

• Enhances The Property’s Visual Appeal

Looking for an excuse to rejuvenate your home’s aesthetic appeal? Well, you can as well try out adding an EWI system. There are a plethora of unique colours and styles you can pick from to beautify your home effortlessly.

• Adds Value To Property

An insulated home will generally cost more than an uninsulated one at the time of resale. Potential home buyers are more interested in the acquisition of a home with an EWI system due to its various benefits - and a higher demand can only imply a higher price!

Will external wall insulation stop condensation?

Damp issues on a property are usually generated by a lot of factors such as a poor or broken guttering, condensation and lots more. The question arising here is what is the possibility of External Wall Insulation (EWI) preventing condensation? Not only is EWI a reliable way to reduce condensation-caused damp, but it’s also one of the major reasons property owners in solid wall homes consider thermally rendering or cladding their external walls.

Condensation arises as a result of warm moist internal air hitting a cold surface such as the steaming up of both windows and mirror when having a shower. What happens here is the condensation of the water vapour in the air from a gas to liquid in the process of touching the cold surface - one whose temperature is significantly reduced to reach the dew point. At the dew point, condensation is very rampant, and to tackle this issue you’ll have to heighten the wall temperature in order to convert the moisture to vapour and permit it to pass through the wall. And that’s exactly the job of an external wall insulation!

To get started you must ensure that the walls are clean and dry prior to fitting the external wall insulation. The month of May through to September when the weather tends to be dry and more stable are usually the best period to carry out the project. The external wall insulation will function just like a cosy blanket around the building. Ultimately, changing the feel and temperature of the inside of your home. As a result, the previously cold walls will no longer be cold which goes a long way to mitigate the effects of condensation. Furthermore, when an EWI is installed, the rooms of your home will automatically trap more thermal mass as the heat is saved in the walls’ fabric and released back when the temperature drops.

Does external wall insulation add value to your home?

The answer is yes! Houses whose external walls have been insulated are more valuable than their uninsulated counterparts. And not only does it add to the value of a home, but also significantly reduces the amount of electricity consumption. This is a major turn on for potential investors which implies a greater demand and ultimately, a higher price. The real estate market is a very dynamic one which can be hard to predict at any particular time. The frequent changes in price are usually down to factors beyond the owners’ control, but if you’re looking to put up your house for sale in the near future, it would be a wise decision to consider ways in which you can increase its value. While renovating each room can be on the expensive side, a great solution would be insulate the external walls.

An insulated house is one that is well secured against the harmful impact of extremely high or low temperature, humidity and other atmospheric factors. Hence, the reason why a house with external wall insulation has a greater value which you would not want to miss out on. What’s more? You’ll get a great thermal insulation with the top notch materials like foamed polystyrene, high quality renders, mineral wool or polyurethane.

With an external wall insulation, you know the transaction will always be favourable on both ends. You get to smile to the bank, while the buyer also gets to enjoy great value for every penny spent. To employ the services of a reliable external wall insulation expert, simply conduct an in depth research from family and friends, online and other sources. Go through their online reviews and ask questions to become more familiar with the process and its value-adding potentials.

Do I need planning permission for external wall insulation?

If you want to install an external wall, it is only wise to consider whether or not a planning permission is required in order to avoid a hefty fine. In a great kudos to the government and a welcome relief to home and property owners, the installation of external wall insulation is seen as an “improvement to the house and not an “extension or an “enlargement. Ultimately, this implies that external wall insulation fitting is to be done under permitted development and a planning application may not be required. However, like many other regulations, there are also exceptions to this rule and the main one is if the activity changes the appearance of your property. Properties such as a listed building having tighter regulations may pose some issues. As a result, we’d advise you to consult your local authority to ensure that there’s no fast rule to this topic before commencement of the external wall insulation project.

At the moment, according to the Government Building Regulations, the surface of the entire wall is to be improved to existing standards if the area to be insulated exceeds 25 percent of the wall. In normal situations this is usually the typical case, however to prevent avoidable fines and other possible punishments, it is always best to reach to your local authority and check out the rules guiding external wall insulation in your constituency. Furthermore, since external wall insulation is not a task that’s recommended to be done by yourself, you can also ask the professional external wall insulation fitting company for the applying rules before proceeding. As a good professional, the company should have a better knowledge of the rules and regulation guiding its activities.

External Wall Insulation

Our reviews

Average

Would highly recommend

Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

Good easy way to find a selection of…

Good easy way to find a selection of trades you need all in one place.

Love Local Quotes it's a big part of my …

Love Local Quotes it's a big part of my Business I would recommend to anyone

Weatherdry Insulation

Based: in Tamworth, B79

We are a company that specialises in Damp Proofing & Insulation. We have a 100% success rate in res...

Weatherdry Insulation reviews

Patrick B., B37
7th December 2021

Insulation | External Wall in Solihull

Weatherby where the only ones to pay a visit, others only gave estimated quotes.

Bamm HUB

Based: in Ramsbottom, BL0

Bamm HUB is based in Ramsbottom and have 7 positive reviews

Bamm HUB reviews

Paul W., DE4
8th July 2017

Insulation | External Wall in Matlock

Only one quoted. Excellent discussion and survey and a very competitive price

Weatherseal Facades

Based: in Rugby, CV22

We are a professional and customer focused business that specialise in External Wall Insulation. We ...

Weatherseal Facades reviews

Michael S., WR11
24th August 2015

Insulation | External Wall in Aldington

Weatherseal were excellent. Very helpful throughout the process

Rated Local builders

Weatherdry Insulation Ltd

909 reviews
Based: in Tamworth, B79 7XH

We are a company that specialises in Damp Proofing & Insulation. We have a 100% success rate in resolving damp issues connected to any form of damp. We can also offer the latest solutions to condensation. We offer a FREE, NO OBLIGATION damp ...

Weatherseal Facades

2 reviews
Based: in Rugby, CV22 5BD

We are a professional and customer focused business that specialise in External Wall Insulation. We have over 25 years experience in construction and are Green Deal approved, with all insurances and CHAS and Constructionline Accreditations held.

Bamm HUB LTD

7 reviews
Based: in Ramsbottom, BL0 9BJ

Bamm HUB LTD based in Ramsbottom, offer services in Insulation. They have an average rating of 4 from 7 reviews. See their latest 5 star review below

Similar Customer Enquiries for External wall insulation

09 Jun

Insulation | External Wall

Eastleigh - SO50

Enquiry from: Nicole V

Start Date: Immediate

External wall insulation Lead External wall insulation Lead External wall insulation Lead

I'm looking for ballpark figures for external wall insulation. The side wall is in bad shape (dirty and some loose render), the other two wall seem ok. The rear has a almost full width conservatory. T...

Post a similar request >

25 May

Insulation | External Wall

Gainsborough - DN21

Enquiry from: Oluwasanjo F

Start Date: Immediate

to make enquiry on how much it would cost to upgrade energy rating from d to c or what it would require to save more on energy during winter. it's a semi detached house, epc c, 3 bedroom, solid wall. ...

Post a similar request >

25 May

Insulation | External Wall

London - W5

Enquiry from: Kaushik G

Start Date: Immediate

require quote for front wall ground and first floor external insulation asap if possible using govt grant are you the property owner: owner of the property property type: terrace property age: 1930-7...

Post a similar request >

13 May

Insulation | External Wall

St. Neots - PE19

Enquiry from: Veronica N

Start Date: Immediate

External wall insulation of the house

Post a similar request >

09 May

Insulation | External Wall

Thornton Heath - CR7

Enquiry from: Tony A

Start Date: Immediate

External wall insulation of end terrace house.

Post a similar request >

05 May

Insulation | External Wall

Downham Market - PE38

Enquiry from: Chantell M

Start Date: Immediate

It is an external wall insulation to a detached property, specifically for an insulation system only (without a render finish) as we intend to install weatherboarding/cladding as the final finish. The...

Post a similar request >

28 Apr

Insulation | External Wall

Ellon - AB41

Enquiry from: Patricia O

Start Date: Immediate

Advise which type of insulation required. Roof insulation is alright

Post a similar request >

30 Mar

Insulation | External Wall

St. Ives - TR26

Enquiry from: Cher D

Start Date: Immediate

Exterior wool/wood insulation and render on 2 bed home

Post a similar request >

23 Mar

Insulation | External Wall

Tiverton - EX16

Enquiry from: Pam C

Start Date: Immediate

Outside I insulation and rendering on a Woolaway bungalow.

Post a similar request >

09 Mar

Insulation | External Wall

Coleraine - BT52

Enquiry from: Laura C

Start Date: Immediate

External wall insulation on 1970’s bungalow

Post a similar request >

04 Feb

Insulation | External Wall

Newtownards - BT22

Enquiry from: Gary G

Start Date: Immediate

External wall insulation to my bungalow

Post a similar request >

01 Feb

Insulation | External Wall

Bolton - BL5

Enquiry from: Michael H

Start Date: Immediate

Kitchen extension requires external insulation in keeping with the rest of the property will require silica rendering extension is approximately 4mts wide x 5mts x 8mts

Post a similar request >

31 Jan

Insulation | External Wall

Hornchurch - RM11

Enquiry from: John C

Start Date: Immediate

wish to insulate my garage walls as well as its ceiling with a bedroom over it.

Post a similar request >

21 Jan

Insulation | External Wall

Birmingham - B45

Enquiry from: Tobenna E

Start Date: Immediate

Just enquiring on prices for EWI in the area

Post a similar request >

08 Jan

Insulation | External Wall

Manchester - M27

Enquiry from: Lee H

Start Date: Immediate

Gable end wall is suffering from the penetrating damp caused by driving rain. 48m2

Post a similar request >

08 Jan

Insulation | External Wall

Enniskillen - BT94

Enquiry from: Alison L

Start Date: Immediate

Looking to have thermal cladding added to front outside wall of house. Small bungalow/ 1 level/ build approx. 45 years House very difficult to heat. Looking for a reasonable quote, ASAP.

Post a similar request >

29 Dec

Insulation | External Wall

Dumfries - DG1

Enquiry from: Ruth B

Start Date: Immediate

We are looking for quotes for external wall insulation please

Post a similar request >

19 Dec

Insulation | External Wall

Liverpool - L20

Enquiry from: Olusola S

Start Date: Immediate

External wall insulation and rendering

Post a similar request >

15 Dec

Insulation | External Wall

Ilford - IG6

Enquiry from: Shah R

Start Date: Immediate

End of terrace house. Require external wall insulation for front, side and rear.

Post a similar request >

05 Nov

Insulation | External Wall

Bristol - BS6

Enquiry from: Rachel K

Start Date: Immediate

External insulation on 2 external walls

Post a similar request >

Local & reliable builders near me

Tell us about your external wall insulation project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in your area

Get free, no-obligation local external wall insulation quotes from 4 verified builders working in your area.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.