The Ultimate Guide to External Wall Insulation

External wall insulation is a popular home improvement solution that offers numerous benefits, including improved energy efficiency, reduced heat loss, enhanced thermal comfort, and upgraded aesthetics. If you’re considering external wall insulation for your home, this ultimate guide will provide you with all the information you need to make an informed decision. From understanding the advantages to learning about the installation process and cost considerations, we’ve got you covered.

The Benefits of External Wall Insulation

Increased energy efficiency and reduced heat loss
- Around 35% of heat loss is through a homes walls. Introducing an insulation product to improve efficiency can reduce heating bills by up to 40%!
Enhanced thermal comfort and reduced condensation
Aesthetically pleasing appearance and increased property value
Soundproofing and improved weather resistance

The Installation Process of External Wall Insulation

Initial assessment and survey of the property
Choosing the right insulation materials
Preparation and surface cleaning
Application methods and techniques
Finishing touches and decorative options

Factors Affecting the Cost of External Wall Insulation

Property size and wall area
- A comprehensive no obligation free survey is undertaken for all customers prior to quotation
Insulation material choice and thickness
- At LMG Home Improvements we typically install Johnstones Stormshield External Wall Insulation System – see their guide here. We can install other systems by prior agreement with the customer.
Access and scaffolding requirements
- Scaffolding will be required for most home installs, this is measured at survey stage and cost provided within our quotation.
Additional services and customisation options
- Optional services such as decorative stonework, facia, soffits, gutters or quoins can all be discussed and prices separated to offer a variety of cost options to suit your needs.

Frequently Asked Questions about External Wall Insulation

How long does the installation process take?
- Weather dependent, external wall insulation typically takes 1-3 weeks on an average house.
Will I need planning permission for external wall insulation?
- Customers should seek advise from their local planning office.
Can external wall insulation be installed on all types of properties?
- Most properties, yes, we will undertake a comprehensive survey prior to quotation.
What maintenance is required after installation?
- Depending on the system installed maintenance will differ – check the maintenance guide here for Johnstones Stormshield that we install at LMG Home Improvements

Investing in external wall insulation can bring significant benefits to your home, from energy savings to improved comfort and aesthetics. By understanding the advantages, installation process, and cost factors, you can make an informed decision and take a step towards a more energy-efficient and visually appealing home. Contact us today to explore the possibilities of external wall insulation for your property and start reaping the rewards.

1 Before
2 Boarding

3 Base Coat and Mesh
4 Top Coat

5 After

martin jones

2022-10-19

Arranged for quote. No show, no courtesy call. Would not recommend

Stephen Gimblett

2022-10-18

Lmg did a superb job in renovating our old tired house into a modern looking house . Matt and Wayne were excellent to deal with. The work boys are super friendly and helpful. JAMES AND JOHN window Men were superb 👌

Jan Pearson

2022-09-05

We have waited a very long time to get our house sorted. After several unsatisfactory visits from other firms and pandemic delays, we found LMG. We are very glad we did. They were very professional from the survey through to the finish. The end result - our house looks like new. We have had so many people comment on how great it looks. I didn't know what to expect, but it exceeded my hopes. Wayne was amazing. His help, support and patience were much appreciated, especially with our 'awkward neighbours'. A potential problem was averted and we are grateful to all at LMG for working this out for us. The boys who did the job (Mac and Jay) were polite and friendly and very accommodating, they worked really well as a team, took pride in their work. So hardworking - a refreshing trait these days, also did some additional small jobs for us. Our neighbours even commented on how hard they had worked. The work they did was to a high standard in every aspect. They, along with Wayne, kept us informed of timescales and any issues that needed to be resolved were done without hesitation. Nothing was too much trouble. As my husband works away it was important for us to have confidence and trust in the team. I was happy to go out and leave them knowing that they would just get on with things. At the end of the job everything was left shipshape and a few very minor issues dealt with immediately. We would have no hesitation in recommending LMG. Thank you to all who worked with us on this project especially Wayne, Mac and Jay.

Anthony Hall

2022-08-26

External Wall Insulation,(EWI) with replacement doors and windows, soffit, downpipes and guttering. Had a complete external renovation of our old house. From the initial quote with Matt, then Nicky, right to the finish was great. The results are fantastic.The outside of our home now looks like a new build, thanks to; Wayne, Tom, Kyle, Mike, Lee, Lloyd, Connor, Rob and Ash. We had to wait a long time to get the job started, but well worth the wait. Wayne kept us informed, and was easy to get hold of, and calling the office was refreshingly professional throughout. When they said they would call us back they always did. Would recommend LMG for a great local company, that takes pride in their work. There were small issues, which when questioned were resolved immediately, and I am very particular. Tidy workers, polite, respectful and friendly. The windows and doors were removed and installed incredibly quickly and no issue was a problem that James and his team couldn't solve, overall a great job done. Thank you LMG.

Donald Morgan

2022-07-21

The workmen arrived on time each day and completed the job within the timescale agreed. They were polite and cleaned up at the end of each day.

Donna Wadley

We had our cavity wall installation removed and was kept informed every step of the way . The work carried out was extremely professional, done quickly and to the agreed time . Would definitely recommend your services.

A. D.

2022-07-20

Cavity Wall Extraction. From the first contact with LMG they understood the problem with our wall and took the time to explain why we had the problem and how it could be solved. Their knowledge and patience in explaining what would happen, gave me the confidence to proceed with them to the extraction of the cavity insulation. The work was carried out professionally and after they had finished they cleared away any debris and even washed down the drive.

David Pugh

2022-06-11

Initially I was struggling to get firms to even engage with me about getting External Wall Insulation (EWI) and re-rendering on my property but then luckily I found LMG. The initial survey was performed on the day and time as promised, communication and options about the work were clear and well communicated and all my questions answered. I immediately felt like it was a company I could trust and would get the work done to a high standard. There was a wait for the work to start but that was not an issue - the estimated start date were accurate and communication coming up to the start of the work was good. The team undertaking the work were friendly, polite, good natured and committed to doing a good job. Their work was to a very high standard and always kept me informed of progress, answered any questions myself or the building inspector asked, kept the area clean and were quiet and respectful to neighbours. I chose to get this work done for primarily functional reasons - improved weather resistance, increased insulation - but the visual impact of the work has really impressed me and the finish is excellent. I am very happy with the job and interaction with LMG and I have already recommended them to others.

vivien bowyer

2022-06-10

We are an end of terrace house and had the outside insulated. The workmen were efficient, polite and obliging, and cleared up after themselves each day. Nothing was too much trouble for the office and i nagged them with queries before deciding to go with LMG. We can heartily recommend the company.

Giuseppe Sipiano

2022-01-07

We had our loft insulated more and from the initial consultation through to the works performed we was very impressed with the quality of work, and also the communication with us. I would highly recommend using them.

The Ultimate Guide to External Wall Insulation

The Benefits of External Wall Insulation

The Installation Process of External Wall Insulation

Factors Affecting the Cost of External Wall Insulation

Frequently Asked Questions about External Wall Insulation

1 Before

2 Boarding

3 Base Coat and Mesh

4 Top Coat

5 After