20+ Years Experience

Specialist External Wall Insulation

External Wall Insulation Hammersmith

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External insulation is an important part of keeping your home warm and preventing heat loss, especially in winter weather in Hammersmith.

At External Wall Insulation, we can provide a wide range of exterior wall insulation options in Hammersmith, offering our customers external wall insulation solutions tailored to their needs.

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Table of Contents

Who Are External Wall Insulation?

We are a specialist external wall insulation company in Hammersmith with a wide range of past projects under our belt. As experts in the field of installing external wall insulation, we understand how to use solid wall properties to benefit our insulation material options, giving customers better results every single time.

Our varied range of external wall insulation systems makes it easy for us to improve any exterior wall, along with making changes to internal wall insulation as needed. While we specialise in outer walls, we are fully equipped for installing solid wall insulation in any style and situation.

Our team understand how to handle both cavity wall insulation and the external insulation of solid walls, making sure to maximize the advantages external insulation offers while still making sure that we are resolving the customer’s problems correctly.

Why Choose External Wall Insulation?

We can provide all of the best and most popular types of external wall insulation available by July 2024 standards onwards and make sure that we are always adding insulation to the highest standards of quality and reliability.

Our team are able to work on wall insulation projects of any size in Hammersmith and has partnered with a range of commercial and residential property owners in the past to deliver bespoke insulation solutions time and time again.

Over 10 Years Experience in External Wall Insulation

With over ten years of experience in the wall insulation niche in Hammersmith, we understand how to provide the best possible internal wall insulation and external wall insulation solutions for every situation. When thermal performance is the goal, our team knows how to deliver it in an effective and affordable way.

We have also been able to build up connections to major suppliers all across the UK, and can provide a massive range of both external and internal wall insulation material types. Whether you want a single-wall insulated or a whole-house insulating material change, we can get the work done well.

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External Wall Insulation Cost Hammersmith

The cost of external wall insulation averages out to around £100 per square meter, but this can vary heavily depending on what you are actually choosing to have done.

Different kinds of internal wall insulation and external wall insulation have their own specific pricing ranges, and the size of the project itself also needs to be considered.

While all insulation projects will often involve extra costs that you may not initially realise, we work hard to keep our projects within the client’s budget limits at all times.

If you want to know more about the potential costs involved in these projects in Hammersmith, then contact us to get a price quote for the insulated outer walls and/or internal walls that you are looking for.

External Wall Insulation Benefits

While internal insulation might sound like the better option to somebody who does not really know the difference, external wall insulation is often seen as the best way to help your walls retain heat.

Our external wall insulation options in Hammersmith can offer a range of benefits, whether they are used alone or as part of a larger insulation plan.

Improved Comfort – Properly insulating your home makes it easier to keep the heating level comfortable, which is always going to be a good thing. External insulation is effective at making sure that you are always completely comfortable with how warm or cool your home is, no matter the weather outside.

Reduced Heat Loss – Good external insulation provides much better heat loss management, ensuring that both solid walls and cavity walls do not lose as much heat over time. This can mean reduced heating bills and far greater heating efficiency for any home.

Better Heat Management – Getting your walls insulated externally can make it easier to stay cool in summer and warm in winter since heat management goes both ways. This means lower heating costs in winter and less money spent on fans and other cooling methods in summer.

Reduced Bulk – External wall insulation does not eat up valuable floor space from your internal floor area – something that can easily happen with solid wall insulation if you try to insulate the interior. While cavity wall insulation does not necessarily have this problem, it still ensures minimal space used.

Two Birds, One Stone – External wall insulation grants better insulation to the outside of your walls, which often means making external changes. This allows you to save on future external redecoration costs by combining both into the same long-term project, replacing or redecorating the entire wall after the insulation is added. This could even come alongside something like refreshing stone walls or installing solar PV panels.

Added Acoustic Insulation – Proper external wall insulation grants both heating retention and sound resistance since there are two layers to prevent sound from leaking out. This means lower noise pollution in either direction, giving you far more privacy overall.

Reduced Thermal Bridging – Thermal bridging refers to gaps within an insulation system that can reduce effectiveness and is common when insulating internally. Using external wall insulation avoids this problem due to it being seamless, and avoids cold bridging altogether.

Improved Fire Resistance – When used as either solid wall insulation or cavity wall insulation, certain EWI materials can offer greater fire resistance if a fire ever breaks out.

Minimal Disruption – Installation of EWI materials, especially by a professional team like ours, can be a non-disruptive process that does not require us to commandeer the inside of your home like internal wall insulation would.

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Frequently Asked Questions

Is external wall insulation a good idea?

External wall insulation provides greater energy efficiency and reduces energy bills significantly, as well as providing advantages for dealing with things like rising damp. The right materials can also offer a weatherproof layer and greater thermal mass that acts as a heat sync.

Overall, this insulation is a fantastic thermal barrier for any external solid walls or cavity walls. Even common material choices can be far more effective when used as an EWI material, and you can even “double up” sometimes if you already have cavity-fill insulation installed.

Is it worth insulating exterior walls?

While the typical installation costs of external wall insulation are going to be more expensive than interior insulation, the benefits are significant. You get a potentially weatherproof render that can reduce your heating bill, trap heat effectively, and regulate temperature in any weather.

Compared to internal insulation, this also means no relocating radiator pipes, no cutting open walls, no tweaking the way that you have had bricks laid, and no disruption in your day-to-day life.

What insulation is recommended for exterior walls?

Expanded polystyrene, phenolic boards and mineral wool are the three most common materials for external insulation. These are often used for other types, such as loft insulation, due to their general effectiveness at insulating any home.

We can guide you to a material choice that suits your needs, whether you are dealing with solid walls or cavity walls, so do not hesitate to get in touch if you need advice on which would work best for you.

What is the best insulation for external walls?

In a typical gas-heated home, EPS (usually either expanding polystyrene or mineral wool) is the most commonly used. This can easily be mechanically fixed against the exterior wall, then sealed with a waterproof render or alternative cladding that further protects it.

Of course, the best option all depends on your needs. A cavity wall may benefit more from one type than a solid stone wall, and a semi-detached house owner may find one option more useful than a terraced home owner.

What are the downsides of external insulation over internal wall insulation?

The only real downsides of external wall insulation are that they cost more than internal options and that they modify the outside of your home. In extreme cases, this might mean you need to seek planning permission or make sure that you are not going against local building regulations.

Our team work hard to ensure that each insulation project is done to the best possible standards, whether that means insulating a solid wall or filling in a cavity wall. Even with these possible problems, the thermal efficiency more than makes up for it.

Can I fit external solid walls and cavity wall insulation myself?

Generally, external wall insulation is not installed DIY. Even attaching it to a brick wall requires a range of careful steps to make sure that nothing is damaged and that the U-value of the insulation is retained. While there is no risk of having to start replacing flooring or repairing a timber frame like with inside walls, the process still is not an easy DIY.

There is also the fact that your local council or a similar local authority may require you to seek planning permission for the changes, which requires a long and complex series of breakdowns and planning stages. Working with professionals like us simply makes this entire process much easier.


We can provide a wide range of insulation options to properties in Hammersmith of any scale, working with clients to ensure that their projects get resolved quickly and cleanly. We understand how to provide the right insulation for every situation, no matter a customer’s specific needs.

If you want to know more about what we can offer, feel free to get in touch and talk to our experts. We are always ready to help another client find the wall insulation they are looking for.

At External Wall Insulation, we take our work in Hammersmith very seriously. The sooner you can get in touch, the sooner we can begin working to keep your home warmer, cosier, and better protected for the future.

Find More Info

Make sure you contact us today for a number of great external wall insulation services in London.

Here are some towns we cover near Hammersmith.

Chiswick, Barnes, Acton, Fulham, Fulham
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What Others Say About Our Services

We absolutely love the service provided. Their approach is really friendly but professional. We went out to five different companies and found External Wall Insulation Pro to be value for money and their service was by far the best. Thank you for your really awesome work, we will definitely be returning!

Mike Warren
Greater London

We have used External Wall Insulation Pro for many years as they are certainly the best in the UK. The attention to detail and professional setup is what makes this company our go-to company for all our work. I highly recommend the team for the immense work - we highly recommend them!

Tom Tipmus
Greater London

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