Osmosis ACD joins Domna - more details

Cavity Wall Extraction

Delivery Services
Cavity Wall Extraction

Cavity Wall Extraction

At Domna, we provide expert guidance on the right approach to cavity wall extraction ensuring qualified professionals use the correct tools and proven methods.

By working with trusted installation partners, we help deliver safe, efficient results that protect your property.

Why it matters?

Severe damp issues often stem from failing or poorly installed cavity wall insulation.

When that happens, proper extraction is essential, not only to fix the problem but also to prepare the property for lasting improvement.

Benefits of Cavity Wall Extraction

We carry out cavity wall extractions to fix hidden problems – and lay the groundwork for safer, drier, and more energy-efficient homes.

Benefits of Cavity Wall Extraction
Eliminates trapped moisture
Protects internal finishes
Prepares walls for new insulation
Improves indoor air quality
Supports ECO funding eligibility
Reduces the risk of structural damage
Minimally disruptive process
Enhances future energy performance
Enables compliance with PAS 2035

What to expect

Technical Survey: Before any work begins, Domna’s surveyors assess the property to inspect the condition of the walls and any existing insulation. We also identify health and safety risks, such as blockages or debris, and provide an estimate of the time and scope required for full extraction.

Specialist Equipment: Extraction is carried out using equipment specifically designed for different property types, including flats and larger buildings. The process typically uses compressed air to loosen insulation, which is then removed by a high-powered suction system. This method is clean, efficient, and built for purpose.

Expert Installation Teams: Domna works with accredited contractors trained and certified by system manufacturers, ensuring equipment is used correctly and insulation is fully removed. For most homes, the complete extraction process takes 2–3 days.

Once the cavity has been fully cleared and dried, it is safe for new, high-performance insulation to be installed. Modern materials provide improved thermal retention and greater resistance to moisture, delivering better protection, higher efficiency, and long-term peace of mind.

FAQs – Cavity Wall Extraction

What is cavity wall extraction?
How do I know if my insulation needs removing?
Will cavity wall extraction damage my property?
How long does the process take?
What equipment do you use?
Can I install new insulation afterwards?

Our Clients

We cut 20,000+ tonnes of emissions, save households over £7 million and add £114 million in property value, every year. It’s no wonder thousands of clients trust us as their retrofit experts.