Internal Wall Insulation

If your home of workplace has solid walls, rather than cavity walls, you can still have them insulated. We can help you save energy and lower your heating bills with internal wall insulation.

Power Switch Energy can help insulate walls internally for both domestic and commercial properties with no job too big or too small.

Our team works safely and efficiently to cause minimum disruption to a building’s occupants. We’ll also look after the fabric of the building so our installations work perfectly.

What Is Internal Wall Insulation?

In a nutshell, internal wall insulation is when the inside part of an external wall is insulated. This helps keep heat and energy within the property.

Before moving forward with internal wall insulation it’s important to consider:

Insulating your external walls from the inside can help improve your building’s energy performance. Reduce heat loss through your walls and you’ll also save money on your energy bills.

Why Internal Rather Than External Wall Insulation?

Picture of a workman in a white hard hat fitting internal wall insulation

For properties with solid walls, both internal and external wall insulation have pros and cons.

External wall insulation, as the name suggests, sees the exterior of the property fundamentally altered to have the insulation installed. This can impact the appearance and is often a more disruptive process.

Internal insulation on the other hand is easier and quicker to install, however the nature of it means internal space will be affected. 99% of the time this is fine, however if a room is already small and claustrophobic, or if things like power switches and radiators need to be moved, it can prove inconvenient.

Like we said, there are pros and cons to both, however one thing’s for sure; having insulation over not having insulation is definitely a winner, thanks to extra comfort and energy savings.

What Are The Different Types Of Internal Insulation?

Our talented team of insulation installers will be able to consult with you and provide advice on the materials most suitable for your property.

Some of the most common materials used for internal wall insulation include:

We can help advise as to which is right for your walls, based on important factors such as cost, breathability and eco-friendliness.  

How Is Internal Wall Insulation Installed?

The introduction of greener insulation products, combined with modern installation practices, has raised the popularity of internal wall insulation over recent years.

The process is as follows:

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First, check that the condition of the wall is suitable and deal with any problems such as damp and condensation.

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Decide whether to insulate the wall directly, fix the insulation with battens or insulate with the use of a new stud wall.


Carry out preparation work on the wall such as removing all fixings (light switches, plug sockets, cupboards etc) and remove old plaster.

Wall with stud wall attached


If needed, build the new stud wall.

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Fix and install the insulation materials.

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Seal joints and re-plaster, re-adding fixtures.

The experts at Power Switch Energy work hard to cause minimal disturbance and have high levels of customer satisfaction.

Why Choose Power Switch Energy For Internal Wall Insulation?

Our team has been providing guidance on internal wall insulation for many years and have helped customers, just like you, across the UK.

We’ll provide all the consultation you need to prepare the walls properly, right through to the successful installation of the chosen insulation materials.

Some internal wall insulation projects will even be subject to government grants and might cost you nothing at all. You can find out more about finance option by clicking here.

Contact our team today for a FREE appraisal of your solid walls. We’ll help you understand how internal wall insulation can save you money.