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Cavity Wall Insulation

Reduce Heat Loss with Cavity Wall Insulation

Improve your home's energy efficiency, reduce heating costs, and create a more comfortable living space with professional cavity wall insulation installation.

  • Reduce heat escaping through external walls
  • Lower your energy bills year-round
  • Quick, clean and professional installation
  • Long-term energy efficiency improvement

Why choose this upgrade?

  • 1
    Lower energy costsSave money by reducing heat loss through walls.
  • 2
    Improved comfortKeep your home warmer in winter and cooler in summer.
  • 3
    Fast installationCompleted with minimal disruption to your daily life.
  • 4
    Long-lasting resultsDurable insulation performance lasting many years.
Cavity wall insulation being installed
35%
Heat lost through walls
What is it?

Understanding Cavity Wall Insulation

Most UK homes built after the 1920s have cavity walls — two layers of brick or block with a gap (cavity) in between. Without insulation, up to 35% of your home's heat escapes through these walls, making your heating system work harder and your energy bills higher.

Cavity wall insulation works by injecting insulating material — typically mineral wool, polystyrene beads, or polyurethane foam — directly into this gap through small drilled holes on the outside of the property. Once installed, the material sets and permanently reduces heat transfer through the walls.

Installation TimeMost properties completed in half a day to 1 day
Lifespan25+ years with professionally installed materials
DisruptionMinimal — no internal work required
EPC ImprovementCan improve your rating by up to 2 bands
Savings Estimator

How Much Could You Save?

Use our interactive calculator to estimate your potential energy savings with cavity wall insulation based on your property type and current heating costs.

Cavity Wall Insulation Savings Calculator

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Do You Receive Benefits?

Why it works

Benefits of Cavity Wall Insulation

A practical upgrade that reduces heat loss, lowers bills, and improves comfort — for the long term.

£

Lower Energy Bills

By reducing heat escaping through the walls, your heating system works less hard to maintain a comfortable indoor temperature.

  • Helps reduce wasted energy
  • Supports more efficient heating use
  • Can lower ongoing household costs

Better Home Comfort

Insulated walls help your home stay warmer during colder months and reduce cold spots across rooms throughout the property.

  • Warmer internal wall surfaces
  • Improved room-to-room comfort
  • More stable indoor temperatures

Long-Term Value

Professionally installed cavity wall insulation is a durable improvement that delivers long-term energy performance benefits.

  • Supports overall energy efficiency
  • Professional installation for lasting performance
  • Suitable for many cavity wall homes
How it works

Our Cavity Wall Insulation Process

We follow a clear and professional installation process from first assessment to final handover.

1

Initial Assessment

We review the property and assess whether the walls are suitable for cavity wall insulation installation.

2

Survey & Preparation

Our team checks access, wall condition, and installation requirements before preparing the work area.

3

Professional Installation

Insulation material is carefully installed into the cavity using the appropriate method for the property.

4

Final Checks

We complete post-installation checks and leave the site clean, tidy, and ready for normal use.

Trusted installation

Recognised Standards, Professional Delivery

H&R Energy Solutions delivers cavity wall insulation with a strong focus on workmanship, property suitability, and professional installation standards.

  • Experienced insulation installation team
  • Professional survey and suitability-led approach
  • Clear communication from enquiry to completion
  • Quality-focused service for private homeowners
Frequently Asked Questions

Cavity Wall Insulation FAQs

Find answers to common questions about cavity wall insulation, how it works, and what to expect.

Cavity wall insulation fills the gap between the inner and outer walls with insulating material, helping reduce heat loss through the external walls and improve your home's thermal performance.
Many homes built with brick cavity construction may be suitable, but the best way to confirm is through a professional assessment. Our team can review the property and advise whether cavity wall insulation is appropriate.
Installation time varies depending on the property size and construction, but cavity wall insulation is often completed relatively quickly with minimal disruption. We will explain the expected timeframe before work begins.
It can help reduce the amount of heat escaping from the home, which may lower the energy needed to maintain a comfortable temperature. Actual savings will vary depending on the property, heating system, and usage patterns.
No. Suitability depends on wall construction type, exposure, condition of the building, and other technical factors. A proper survey is important before any installation is recommended.
In most cases, installation is completed with minimal disruption. Our team aims to keep the process clean, efficient, and well managed from start to finish.
The cost depends on the size of the property, wall area, accessibility, and suitability. We provide clear quotations based on the property requirements so you know exactly what is involved before proceeding.
Professionally installed cavity wall insulation is intended to provide long-term performance. Its lifespan depends on the material used, the property condition, and installation quality.
You can contact H&R Energy Solutions to request a quotation. We will discuss your property, review the likely suitability, and guide you through the next steps with no obligation.

Ready to Improve Your Home with Cavity Wall Insulation?

Speak to our team today for expert advice, a clear quotation, and professional installation tailored to your property.

No obligation quote  •  Professional service  •  Fast response