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Cavity wall insulation & HOW it WORKs

Insulation keeps your home warmer in the winter and cooler in the summer

We believe everyone has a right to live in a warm and healthy home 

How can I tell if I have a cavity wall?

There are clear ways to tell if your property has a cavity wall:

  • It has walls more than 260mm thick

  • It was built after 1920 homes built within the last 90 years certainly do have cavity

  • It has brickwork like pictured bellow 

Solid brick or cavity wall

Premium Residential Insulation Services

Cavity wall insulation works by filling the gap or cavity between the inner and outer walls of a property with insulating material. Here's how the process typically works:

  • Assessment: Before installation, a qualified technician will assess your property to determine its suitability for cavity wall insulation. They will inspect the type of walls you have (usually brick or block), the width of the cavity, and any existing insulation.

  • Preparation: On the day of installation, the technician will prepare the property by drilling small holes, usually around 22mm in diameter, at regular intervals along the outer wall. These holes are strategically placed to access the cavity space between the walls.

  • Insulation Material: The chosen insulation material, often either mineral wool, foam, or beads, is then injected into the cavity through the drilled holes. The insulation material is usually blown in under pressure to ensure thorough coverage and to fill any gaps or voids within the cavity.

  • Distribution: As the insulation material is injected into the cavity, it spreads out evenly, filling the entire space between the walls. This creates a continuous layer of insulation that helps to prevent heat loss and improve the thermal efficiency of the property.

  • Completion: Once the cavity is fully insulated, the drilled holes are plugged and sealed with matching mortar or a suitable filler. This ensures that the exterior of the property remains intact and aesthetically pleasing.

  • Testing: After installation, the technician may conduct a final inspection or test to ensure that the cavity wall insulation has been installed correctly and is performing as expected.

  •       Overall, cavity wall insulation works by creating a thermal barrier within the walls of a property, reducing heat loss, improving energy efficiency, and enhancing overall comfort levels for occupants.


Dynamic insulation reduces your energy consumption and carbon footprint, protect the environment, and boost overall home comfort!


Once our Insulation is installed, you will notice an immediate and significant decrease in outside noises.

Cavity wall Insulation blown fibre filling


A material’s insulation properties are rated as “R-Value.” “R” stands for resistance. our cavity wall Insulation is 35% more efficient than the competition.


Having cavity wall Insulation in your walls can block allergens, contributing to the overall comfort and health of everyone in your home.


Insulation in your walls actually acts as a fire barrier that will retard the spread of flames in your home.

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Call our friendly customer service team today to find out more about insulating your home, ask a question or book a home survey.

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