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Why Insulation Should Come First in a Whole House Renovation

  • Writer: LXM Building Services
    LXM Building Services
  • Aug 6
  • 5 min read

When embarking on a whole house renovation, homeowners are often eager to jump into the exciting parts of design, new kitchens, open-plan layouts or high-end finishes. But before any of that can happen, one crucial element needs to come first: insulation. At LXM Building Services, we help homeowners across Greater London prioritise retrofit insulation London solutions as the foundation of every well-designed renovation. It is not just a technicality. It is the difference between long-term comfort and ongoing inefficiency.




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LXM Building Services - Full Renovations

Why Insulation Should Be the First Step in Your Whole House Renovation

The aim of a whole house renovation is to improve both the appearance and performance of your home. Retrofitting insulation before the decorative and structural elements go in ensures you achieve lasting results in comfort, efficiency and value.


Failing to insulate at the beginning can mean tearing out newly finished walls, undoing plasterwork or dismantling ceiling finishes to retrofit insulation later. This is particularly important in Victorian and Edwardian homes in areas like Kensington, Loughton or Notting Hill, where walls and roof voids offer excellent insulation opportunities if tackled early.


With the rising cost of energy and growing pressure to meet eco-friendly standards, insulation is no longer optional. It is integral.



What Is Retrofit Insulation and Why Is It Essential?

Retrofit insulation London solutions involve upgrading the thermal performance of an existing building, using internal or external methods. It differs from insulation in new builds because it must work around your home’s existing materials and structure.


Common methods include:

  • External Wall Insulation (EWI)

  • Internal Wall Insulation (IWI)

  • Loft and Roof Insulation

  • Underfloor Insulation


Each approach is designed to retain heat, reduce energy bills and improve interior comfort all year round. LXM's retrofit insulation services are expertly designed to work hand-in-hand with your renovation schedule.





Our team brings experience in restoring period homes across West London, North London and Greater london. Whether you're updating a Victorian terrace in Kensington or reimagining a semi in Enfield, we help you retain original skirting, cornices, fireplaces and more.



Why Retrofit Insulation in London Matters More Than Ever

London’s housing stock is among the oldest in the UK, which means many properties have poor energy performance. In neighbourhoods like Enfield, Barnet or Chelsea, we see significant heat loss from uninsulated walls, single-glazed windows and underfloor voids.


Government legislation and local energy targets are also driving change. Improving your home’s EPC rating now can futureproof it against regulations and improve resale value.


By incorporating retrofit insulation early in your whole house renovation, you:


  • Avoid duplication of work

  • Meet current and upcoming building regulations

  • Achieve a warm, dry, comfortable environment from the outset

  • Lay the groundwork for renewable energy systems like heat pumps or solar



Our Calendar-Based Planning Puts Insulation First

LXM Building Services uses a calendar-based renovation strategy to plan every project phase efficiently. We begin with feasibility and design reviews to assess your current insulation and retrofit potential.


From there, our in-house project managers develop a renovation sequence that prioritises:


  • Structural and thermal upgrades (including insulation)

  • Electrical and mechanical services

  • Architectural fit-out and finish


This phased approach ensures the retrofit insulation London homeowners need is installed without delaying the bigger picture.



Related:

Loft Conversion

Thinking About a Loft Conversion?


LXM offers tailored loft conversion services including dormer, mansard, hip-to-gable, and Velux options—all designed to enhance space, light and long-term value.


Discover everything you need to know in our latest blog:“Loft Conversions in London: Costs, Storage Ideas & Design Tips for 2025" From planning and pricing to smart storage solutions and the latest design trends, this guide will help you make the most of your loft space. Whether you're in Notting Hill, Barnet, Kensington or beyond, we cover what to consider before you begin.




Case Study: Whole House Renovation in Loughton

In our Victorian house renovation in Loughton, we integrated underfloor and roof insulation before beginning electrical, plumbing and layout works. This allowed the new heating system and flooring to perform efficiently and set the foundation for a modern, comfortable home.


Our client appreciated the attention to sequencing, and the result was a seamless, high-end finish with excellent energy efficiency.




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Why Choose LXM for Retrofit and Renovation


  • In-House Labour: From insulation to final decoration, every trade is part of our expert team. No subcontractor delays or miscommunication.

  • Family-Run Service: We are proud to offer a personalised, family-oriented service that prioritises trust and communication.

  • Certified and Experienced: Our tradespeople are NICEIC, Gas Safe and PAS2035-ready for retrofit works.

  • Detail-Focused: We deliver top-tier results, from thermal performance to architectural design.

  • Local Knowledge: Whether you’re in South London, Hackney or Cockfosters, we understand borough-specific regulations and housing types.


Follow our work on Instagram, meet the team, explore our Projects, or learn more About Us.



Our Accreditations: Built on Trust and Safety

At LXM Building Services, we take pride in maintaining the highest standards across all our projects. Our certifications reflect our commitment to safety, compliance, and industry-best practices:


  • CHAS Accredited Contractor – Recognised for excellence in health & safety compliance.

  • Constructionline Gold Member – Meeting robust procurement and risk management standards.

  • NICEIC Approved Contractor – Certified for electrical safety and regulatory compliance.

  • Gas Safe Registered – Fully authorised to carry out safe gas work across residential and commercial properties.


Accredations
These accreditations give our clients peace of mind—knowing that every project is delivered by qualified professionals who care about doing things properly.



Where We Work

Based in North London, LXM proudly serves homeowners throughout Ladbroke Grove, Notting Hill, Kensington, Barnet, Enfield, Cockfosters, Loughton, Epping and Chelsea, among other London boroughs. Our local knowledge means we’re familiar with planning policies, architectural styles and the nuances of delivering high-end results in diverse neighbourhoods.



Explore Our Work & Ideas

Browse our Project Gallery to see examples of recent kitchen transformations and multi-room refurbishments. If you’d like more inspiration or practical advice, explore the News and Blog section, where you’ll find useful articles on topics such as loft conversions, extensions, and driveway paving.




Let’s Talk Insulation First

If you are planning a whole house renovation in Greater London, make insulation your first move. We help you understand what your property needs, what systems are suitable and when to install them in your renovation timeline.






FAQ: Insulation and Whole House Renovations


1. Why is it important to start with insulation?

Because insulation affects nearly every other system in the home. Installing it early avoids duplication, damage and compliance

issues later.


2. What type of insulation should I use for a period home?

It depends on your property. External wall insulation is ideal for homes with solid walls, while internal systems suit properties with space limitations. LXM provides tailored solutions.


3. Is insulation included in your full renovation packages?

Yes. Our whole house renovation services include retrofit insulation designed for the specific needs of each property.


4. Will I save money on energy bills?

Definitely. Properly installed insulation significantly reduces heat loss and energy consumption. Many clients see 15 to 30 percent reductions in bills.


5. Can I insulate later if I skip it at the start?

Technically yes, but it is inefficient and more expensive. We always recommend insulating before finishes go in.

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