Insulation services

Cavity wall insulation that cuts heat loss and improves comfort fast.

If your home has unfilled cavity walls, insulating them is one of the most straightforward upgrades available. Done properly, it helps keep heat indoors for longer and makes rooms feel more consistent.

Prefer a call? 01254 945768
Quick upgrade

Often completed in a day, with minimal disruption indoors.

Warmer home

Reduces drafts and cold spots caused by heat escaping through walls.

Lower demand

Heating works less to maintain comfort, which can reduce running costs.

Clear advice

We confirm suitability first and explain the best route including funding options.

What is cavity wall insulation?

Cavity walls are built with an outer and inner wall, leaving a gap between them. If that cavity is unfilled, heat can escape more easily. Cavity wall insulation fills the gap with an approved insulating material to reduce heat loss.

  • Improves comfort by keeping warmth inside the home for longer
  • Can help reduce drafts and that “cold wall” feeling in rooms
  • Usually low disruption, with small drill holes made good afterwards
Good to know

Not every home is suitable. We check wall type, exposure, cavity condition and ventilation details before recommending it.

Insulation and home upgrade work in progress

How cavity wall insulation is installed

A simple process when the property is suitable, and it is done to the right standard.

1) Suitability check

We confirm the wall construction, cavity condition and exposure to wind-driven rain.

Right first timeHonest advice
2) Small access holes

Neat drill holes are made externally in a pattern to allow even filling.

External workLow disruption
3) Insulation injection

Approved material is injected to fill the cavity evenly, then holes are made good.

Even coverageTidy finish
Quick tip

For best results, cavity insulation is often paired with loft insulation and good ventilation where needed.

Benefits of cavity wall insulation

This is one of the most cost-effective insulation upgrades when a home is suitable. The biggest difference is comfort, followed by reduced heat demand.

Warmer rooms and fewer cold spots

Less heat escaping through walls helps rooms feel steadier and more comfortable.

ComfortConsistency
Lower heating demand

With reduced heat loss, your heating may run less to maintain the temperature you want.

EfficiencyPotential savings
Reduced drafts

When walls are insulated correctly, many homes feel less “draughty” around external rooms.

Cosy feelLess chill
Long-term improvement

Once installed properly, cavity insulation is designed to provide long-lasting performance.

Long termLow maintenance
Wall and insulation materials

Is my property suitable?

Here’s the quick checklist we use before recommending cavity wall insulation.

Common suitability points

This keeps it simple. If you are unsure, send us the postcode and property type and we will advise.

Unfilled cavity wallsUsually brick cavity construction rather than solid walls.
Cavity width is suitableEnough space for the approved insulation material.
Brickwork is in good conditionNo major cracks or issues that would allow water ingress.
External walls are accessibleAccess is needed to drill and make good neatly.
Internal walls are dryIf there are damp patches, the cause should be addressed first.
Construction type confirmedSome steel or timber framed buildings need a different approach.
Good to know

Suitability depends on the property and exposure. We will always check first and recommend the safest route.

Not sure what wall type you have?

No problem. In your enquiry, include: postcode, property type, approx year built (if known), and whether the home feels cold in external rooms.

Fast answer

We can usually advise quickly once we know the basics.

PostcodeProperty typeGoal
Funding route

If you might qualify, we will point you to the right eligibility path.

Eligibility hubClear next step

How the process works

Simple steps, clear advice, and a tidy finish.

1) Tell us the basics

Postcode, property type, and what you want to improve.

FastSimple
2) Suitability check

Confirm wall type, cavity condition and exposure considerations.

Right routeSafe advice
3) Installation

Neat drilling, cavity fill, and making good to a tidy standard.

Low disruptionTidy finish
4) Handover

We explain what was done and the best way to run the home for comfort.

Clear guidanceSupport
Did you know

In many homes, heat loss through uninsulated walls can be significant, so cavity insulation can make a noticeable comfort difference.

You may qualify for funded insulation

If you are eligible, funding can cover some or all of the cost. Use the hub for a clear route, then we will guide you through the next steps.

Useful related pages

If you are building a full comfort plan, these help:

Cavity wall insulation FAQs

Straight answers to common questions.

How do I know if my walls have a cavity?
Many homes built from the 1920s onwards have cavity walls, but it varies. If you are unsure, send your postcode and property type and we can advise the likely construction and next steps.
How long does it take?
If the home is suitable and access is straightforward, installation is often completed within a day. The exact time depends on the size of the property and wall layout.
Will it cause damp?
Cavity insulation should only be installed when the property is suitable. We check exposure and wall condition first. If there are existing damp issues, we advise on resolving the cause before installing insulation.
Can it be funded?
In some cases yes, depending on eligibility. Use the eligibility hub and we will confirm the best route for your home.

Get advice or a quote

Send the basics and we will come back with the best next step.

Helps us advise quickly on options and coverage.
Email or phone is fine. Add whichever you prefer.
The more detail you share, the faster we can recommend the right approach.
Check eligibility Prefer a call? 01254 945768

Quick links

If you are building a full comfort plan, these pages help.

Eligibility and Funding Hub

Get a clear answer in one place.

Loft insulation

Often a strong first step for comfort and savings.

Ventilation

Important if you are improving insulation in the home.