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Can I Do External Wall Insulation Myself?

External wall insulation is a great way to improve your home's energy efficiency and reduce energy bills. It can also add value to your property and make it more attractive to potential buyers. But can you do external wall insulation yourself, or do you need to hire a professional? In this blog post, we'll look at the cons of DIY external wall insulation.

External wall insulation

Can I Do External Wall Insulation Myself? - Blog Content

The Cons of Doing External Wall Insulation Yourself

While there are some advantages to doing external wall insulation yourself, some drawbacks should be considered before taking on the project.

Here are some of the potential disadvantages of doing external wall insulation yourself.

By weighing these factors, you can decide whether to hire a professional or take on the project yourself.

1. Skills and knowledge.

One of the primary considerations when deciding whether or not to tackle external wall insulation as a DIY project is your skills and knowledge. External wall insulation is a construction project that requires a certain level of expertise and familiarity with building techniques and materials.

If you are still getting familiar with these concepts, completing the project to a high standard may be challenging. Some of the skills and knowledge that are helpful for DIY external wall insulation include:

Basic construction skills.

External wall insulation involves cutting, fitting, and fastening materials to your walls. You should be comfortable using tools such as a saw, drill, and hammer and have a basic understanding of measuring and marking materials.

Familiarity with insulation materials and techniques.

You should be familiar with the different insulation materials available and the proper cutting, fitting, and installation techniques. You should also know how to seal and weatherproof the insulation to protect against moisture and drafts.

Safety considerations.

External wall insulation involves working on the exterior of your home at heights and handling heavy materials, which can be hazardous. You should be familiar with basic safety practices, such as wearing protective gear and following proper lifting techniques. If you're not comfortable working at heights or with power tools, it may be safer to hire a contractor.

2. Time and effort.

External wall insulation is a big project that requires a significant investment of time and effort. If you are considering tackling the project yourself, it is essential to carefully decide whether or not you have the time and energy to devote to the task.

Some of the factors that can impact the time and effort required for DIY external wall insulation include:

  • Size of your building: the more extensive your building, the more insulation you will need to install and the longer the project will take.

  • The complexity of your building: if your building has unusual features or architectural details, installing the insulation may be more challenging. This can add to the time and effort required.

  • Condition of your walls: if your walls are in poor condition, you may need to do additional repairs or prep work before installing the insulation. This can add to the time and effort required.

  • Your level of experience: if you are a seasoned DIYer with expertise in construction, you can complete the project more efficiently. However, it may take longer to complete the project if you are new to DIY or have limited construction experience.

3. Risk of damage.

One of the potential risks of DIY external wall insulation is the possibility of causing damage to your walls or building. If the insulation is not installed properly, it can lead to several problems, including:

  • Moisture damage: insulation not correctly sealed or weatherproofed can allow moisture to penetrate the walls, leading to rot, mould, and other types of damage.

  • Structural damage: if the insulation is not installed correctly, it can put unnecessary stress on the walls and potentially affect the structural integrity of your building.

  • Heat loss: if the insulation is not fitted correctly or sealed, it may not provide the level of energy efficiency that you were hoping for. This can result in higher heating bills and decreased comfort.

4. Warranty and liability.

Warranty and liability are important considerations when deciding whether to do external wall insulation yourself or hire a professional contractor.

Warranty: A warranty is a promise by the contractor to repair or replace any faulty work or materials at no additional cost to you. If you hire a professional contractor to install your external wall insulation, they will typically provide a warranty for their work.

This means that if any issues arise with the insulation within a certain period of time (e.g. one year), the contractor will fix the problem at no additional cost to you. If you do the work yourself, you will not have this protection, and you will be responsible for any issues that may arise.

Liability: Liability refers to the legal responsibility for any damages or injuries that may occur due to work being done. If you hire a professional contractor, they will typically have insurance covering any liability issues that may arise during the insulation installation.

If you do the work yourself, you will be liable for any damages or injuries resulting from the job, and you will need to cover any costs associated with these incidents out of your pocket.

5. Cost of materials.

While the cost of materials for external wall insulation can be high, professional contractors often have bulk buying power and access to discounted materials, which can help reduce the project's overall cost.

In addition, if you still need to own the necessary tools and equipment, you will need to purchase or rent them, which can add significantly to the project's cost. Professional contractors already have the required tools and equipment, so you do not need to worry about these additional costs.


Can I Do External Wall Insulation Myself? Summary

If you are considering installing external wall insulation in your home, it is essential to carefully consider the cons of doing the work yourself versus hiring a professional contractor. While there may be some potential cost savings to be had by doing the work yourself, there are several compelling reasons to hire a professional contractor instead.

First and foremost, professional contractors have the expertise and experience to properly install the insulation, which can help ensure that the job is done correctly and will last for many years. In addition, installing external wall insulation is a labour-intensive and time-consuming project. If you do not have the physical ability or time to devote to it, it may not be practical for you to do it yourself. Professional contractors can handle the job efficiently, freeing up your time and energy to focus on other tasks.

Finally, it is vital to consider the risk of damage and liability. Installing external wall insulation involves drilling into the walls of your home and attaching insulation boards. If done improperly, this can damage your walls, which can be costly to repair.

The Key Takeaway: if you are confident in your skills and knowledge and willing to research and learn as you go, DIY external wall insulation can be rewarding and challenging. However, if you are uncertain about your abilities or need more time to devote to learning, it may be best to hire a professional to ensure the job is done safely and to a high standard.

Do you need help?

If you are looking to install external wall insulation in your home, it is crucial to choose a reliable and professional installer to handle the job. Veramut Ltd is a local external wall insulation installer in Bournemouth with a reputation for providing top-quality work to customers in your area.

With years of experience in the industry, we have the skills and knowledge to properly install your insulation, ensuring that it will effectively improve your home's energy efficiency and reduce your heating costs. By choosing Veramut Ltd, you can trust that you are getting the best value for your money and that the job will be done right the first time.

Please E-mail us at or call on 07872 107 727 today to schedule a consultation and get a quote for your external wall insulation project.

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