External Wall Insulation

External Wall Insulation for Energy Efficiency

External wall insulation is an excellent solution for improving energy efficiency, reducing heat loss, and protecting your home or building. Whether you’re planning a retrofit, refurbishment, or new build, external wall insulation can help you meet UK building regulations while lowering energy bills and enhancing the aesthetics of your property.

At The Gutter and Cladding Company, we specialise in high-performance insulation systems, including the versatile Celotex and YBS SuperQuilt insulation. Combining cutting-edge thermal efficiency with stylish cladding options, our solutions deliver comfort, durability, and value for properties across Dorset, Hampshire, Wiltshire, and surrounding areas.

Discover more about our external wall insulation services by speaking to our team today. Call us on 01202 470044 for a free quote.

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Affordable House Cladding

Partially clad home

From £1700 inc VAT

Partially clad your home with gable-only cladding
Mid section home cladding

From £3300 inc VAT

Choose cladding for your home’s mid-section, or mid-section and gable
Dormer cladding

From £3600 inc VAT

Cladding for your home’s dormer
Full home cladding

From £4000 inc VAT

Maximum protection for your home with full-façade cladding

What Is External Wall Insulation?

External wall insulation involves adding a layer of thermal insulation to the exterior surface of a building’s walls. This system is ideal for:

  • Retrofits: Upgrade older buildings that lack sufficient insulation.
  • Refurbishments: Improve energy efficiency in renovations.
  • New Builds: Integrate modern insulation solutions from the start.

Unlike internal insulation, external systems preserve your indoor space while achieving excellent thermal performance. It also protects walls from weathering, preventing damage caused by moisture, frost, and UV rays. It’s a popular choice for homeowners, builders, and architects aiming to exceed UK building regulations for energy efficiency.

Get in touch with our team today to learn more about adding wall insulation to the exterior of your property. Call us on 01202 470044.

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Benefits of External Wall Insulation

Improve Energy Efficiency

External wall insulation dramatically reduces heat loss, keeping your home warm in winter and cool in summer. This reduces energy usage and lowers your bills while helping to improve your property’s EPC rating.

Maximise Indoor Space

Since the insulation is applied externally, it doesn’t reduce your indoor living space. This is particularly valuable in homes with smaller interiors.

Aesthetic Options

External insulation is easily combined with a wide range of cladding finishes, such as render, timber, or decorative tiles. These options allow you to improve your home’s energy performance while enhancing its appearance.

Weather Protection

External wall insulation acts as a protective shield for your building, reducing the risk of moisture ingress, frost damage, and other weather-related wear and tear.

Long-Term Value

Investing in external wall insulation improves your property’s energy efficiency and overall kerb appeal, adding long-term value to your home or building.

Speak to our team to learn how your property could benefit from adding exterior wall insulation. Call us on 01202 470044.

Celotex and SuperQuilt External Wall Insulation

At The Gutter and Cladding Company, we recommend Celotex or SuperQuilt insulation for their advanced performance and versatility. These systems use a multi-layered reflective technology to deliver high thermal efficiency in a thin profile, making it perfect for retrofits, refurbishments, and new builds.

By combining thermal insulation with vapour control, Celotex and SuperQuilt ensure an airtight installation that maximises energy savings while preventing moisture build-up.

Key Features of These Insulation Systems

  • Thermal Efficiency: Achieves U-Values as low as 0.17 W/m²K, exceeding building regulation requirements.
  • Slim Profile: Compact design minimises bulk, ideal for projects where space is limited.
  • Versatility: Compatible with various finishes, including render, timber cladding, and tiles.
  • Vapour Control Layer: Ensures airtight and moisture-resistant performance.
  • Certified Quality: Fully compliant with UK building regulations and BBA-certified.

We are expert installers of this insulation system, so get in touch today to discuss adding enhancing your building’s energy efficiency.

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How to Install External Wall Insulation

Installing external wall insulation is a straightforward process when handled by professionals. Here’s how it works:

  1. Prepare the Walls: Clean and inspect the exterior wall surface.
  2. Fix Battens: Install battens to create an air cavity for ventilation.
  3. Apply Insulation: Fit the insulation layers to the battens and seal joints using foil tape.
  4. Install a Breathable Membrane: Add a layer of breathable material to enhance.
  5. Fix Battens: Install battens for cladding to be fixed too.
  6. Finish with Cladding: Complete the installation with your choice of external cladding.

Proper installation ensures optimal thermal performance and long-lasting results.

Book an installation with our professionals by calling us on 01202 470044.

U-Values for External Wall Insulation

The following shows how different setups achieve specific U-Values:
SystemBatten DepthU-Value (W/m²K)
Render & Render Board (Solid Brick)25mm0.34
Render & Render Board (Cavity Wall)38mm0.19
Cladding (Solid Brick)25mm0.32

All U-Values are BDA Kiwa certified, ensuring compliance with UK building regulations.

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Applications of Cladding Wall Insulation

External wall insulation is suitable for a wide range of applications, including:

  • Residential Properties: Upgrade the energy efficiency of houses, flats, and heritage buildings.
  • Commercial Buildings: Improve thermal performance in offices, schools, and retail spaces.
  • Retrofit and Refurbishment Projects: Transform older properties with modern insulation.

With multiple cladding finishes available - such as timber, render, or decorative tiles - external insulation can suit any architectural style.

Contact our team to discuss adding wall insulation to the exterior of your home. Call us on 01202 470044.

Contact Us for Your Insulation Needs

Ready to improve your home or building with high-performance external wall insulation? At The Gutter and Cladding Company, we specialise in tailored solutions using Celotex or SuperQuilt insulation and premium cladding finishes.

Contact us today for a free quote or consultation. Let us help you achieve energy efficiency, meet UK building regulations, and enhance your property’s value.

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External Wall Insulation FAQs

External wall insulation involves applying a layer of thermal insulation to the exterior surface of a building, improving energy efficiency and weather protection.

Celotex and SuperQuilt use reflective layers to trap heat, achieving high thermal efficiency in a thin profile. It also includes a vapour control layer to prevent moisture issues.

Yes, external wall insulation with Celotex or SuperQuilt exceeds the Part L requirements for U-Values, ensuring compliance with UK standards.

Popular options include render systems, timber cladding, and decorative tiles, allowing you to customise your property’s look.

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Why Choose The Gutter & Cladding Company?

Choosing the right installer is just as important as choosing the right product. Our customers receive honest guidance, detailed quotations and regular communication throughout their project. Installations are completed by experienced teams using trusted products and appropriate installation systems.

  • Over 550 Positive Reviews
  • Fully Insured
  • Cedral Select Accredited
  • Freefoam Registered Installer
  • GAP, Eurocell and Rainclear Accredited
  • 10 year insurance backed Guarantee
  • James Hardie Registered preferred installer
  • Certass registered
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S Leah
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Great service ...Simon came did measurements and quotes. .no pressure ...very friendly and professional service ...Jack kept us informed on when team would be here ....good communication...team of Sam Marc and Charlie ...were very friendly...got on with the task ...did guttering and Cladding on our house ....house now looks amazing ...great job well done guys ...would recremmend these guys any time ...
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M Mayes
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The whole process was superb from contacting Jack in the office who booked an appointment for me with Simon who gave me all the information I needed plus price in a friendly and professional way and after discussing it with my wife we went ahead and ordered the hardie lap cladding in soft green plus insulation!!!!!! The installation team Adam and Rich were first class and nothing was too much trouble for them and were definitely customer focused and orientated and very pleasant,polite and friendly and did the job efficiently and quickly with no fuss and tidied up as they went and did such a good job of it that you would be hard put( except for the cladding!!!!) to know that we had anything done!!!!! I would recommend the gutter and cladding company to anyone!!!! Well done the whole team!!!!!👍
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S Dykes
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We had our Sofits and Gutters all replaced. Very happy with the service from start to finish. The 2 x fitters were excellent. I would highly recommend this company.
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A Woodfall
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Had roofline (soffits, fascias, gutters) all done. Great crew. Solid work. Fair pricing. All happy
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C Paisley
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Very happy with the service, on time, ££good, saved number to my address book, will use again very happy
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T “Sponge”
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Had a great experience of service with these guys, they were fair on quotes to work that needed doing to the roof, they tidied up after and would 100% recommend for any roofing/guttering work that needs doing. Thanks
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T Jones
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Having seen the first rate job done by The Gutter and Cladding Company on one of our neighbours property we decide to use them to replace our old and tired cladding. We were not disappointed. From the onset we were treated with courtesy. Everything was fully explained – the different types of cladding, the insulation and the fitting procedure. As we were unsure of which colour cladding to have, photos of the house with the different colour cladding superimposed on it were sent to us. This was a tremendous help. The fitting crew were very competent, polite and professional answering our questions and queries in a knowledgable and well mannered way. The work was carried out to a very high standard and any mess was cleaned up as they went along. We received phone calls and texts from head office checking that we were happy and keeping us up to date with any changes. Overall it was a thoroughly professional job with a lovely end result. I am more than happy to recommend this company.
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K Bartlett
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Had the guttering replaced at the rear of my property. I would happily recommend this Company, great communication, realistically priced, everything left clean and tidy. It's nice to find a Company with high standards. Thank you.

How Our Quotation Process Works

From Initial Estimate to Installation:

1. Send us your details.
Tell us what you are considering and provide photographs of the property where possible.

2. Receive an initial estimate.
We will review the information and provide an estimated cost to help establish whether the project suits your budget.

3. Arrange a property survey.
If you are happy with the estimate, we will arrange a site survey, discuss the specification and show you relevant samples and colours.

4. Receive your final quotation.
Following the survey, we will provide a detailed quotation confirming the proposed work and price.
Trusted by leading businesses throughout the South of England, they value the quality of our work as much as we do

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