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Free Cavity Wall Insulation in Newport, Ebbw Vale, Pontypool and throughout Gwent






Phone us on 0800 7 10 10 88 or 07960 799681


or email to cavitywall@greendealnewport.co.uk for a free no obligation survey.


Happy Days!

 All homeowners and private tenants qualify for a full 100% grant regardless of financial circumstances.

If your home was built after 1920, the chances are that its external walls are made of two layers with a gap or cavity between them. Cavity wall insulation fills that gap, keeping the warmth in - to save energy. It can also help reduce condensation inside the house if this is a problem on your external walls.

Your home will usually be suitable for cavity wall insulation if:

  • its external walls are unfilled cavity walls

  • your cavity is at least 50mm wide

  • the masonry or brickwork of your property is in good condition

  • it is more than twenty years old (most newer houses will have insulation already)

  • the walls are not exposed to driving rain.

If your house was built in the last twenty years or so, its walls are probably insulated already. 

What if there is damp? 

If you have any damp patches on your external walls then they should not be insulated until the problem is sorted out. Speak to us about damp prevention. 

How is insulation installed? 

Filling cavity walls is not a job you can do yourself. We do the job in around two hours for an average house with easily accessible walls; it is simple, quick - and with no mess. 

Cavity Insulation can reduce the amount of heat escaping from your home by up to 35%. Cavity Wall Insulation saves up to £135 per year on energy bills and reduces CO2 emissions by up to 610kg. 

  • Most homes built of brick between 1920 and 1999.

  • Blown into the gap between two layers of bricks.

  • Installed from the ground floor to the roof. 

N. B. Cavity wall insulation is achieved by blowing either mineral wool or small polystyrene beads through a series of small holes drilled in a careful pattern in your walls.  

Our Installers are among the best in the business, and they will make good the holes with closely-matching filler, so that you have a first-class result with the minimum of fuss and disruption. Most of our customers are amazed at how quickly and neatly this operation can be carried out and our work is guaranteed for 25 years by CIGA – the Government-backed Cavity Insulation Guarantee Agency – offering you complete peace of mind (see below)



Grants do not have to be repaid at all , you simply pocket your energy savings (which is about £135 p.a. for cavity wall insulation).



Peace of Mind

The Cavity Insulation Guarantee Agency provides independent 25 year guarantees for Cavity Wall Insulation fitted by registered installers in the UK and Channel islands.

The Government regards cavity wall insulation as the most effective energy savings measure that most people can carry out on their homes and a major contributor to reducing emissions of carbon dioxide, the main greenhouse gas.  

The Cavity Insulation Guarantee Agency was established in consultation with the Government's Energy, Environment and Waste Directorate (a division of DETR) to provide householders with an independent, uniform and dependable guarantee covering defects in materials and workmanship.

Independent research carried out for the Department of the Environment, Transport and the Regions (DETR) has confirmed that cavity wall insulation is a very reliable process. 

Problems are therefore extremely rare, but if they do occur, CIGA has the expertise to ensure that they are swiftly rectified. 

CIGA also operates and administers the Cavity Wall Insulation Self Certification scheme (CWISC) in association with the British Board of Agrément. The scheme provides homeowners with the comfort of knowing that work by registered contractors complies with the requirements of the Building regulations.



To Book a Free No Obligation Consultation and Survey email us at




or telephone us on any of these numbers

Telephone: 01633 40 80 48 / 01495 80 70 07 / 02921 96 10 11

Freephone: 0800 7 10 10 88

Mob: 07960 79 96 81 / 07971 82 10 52

or complete the Free Survey Request Form below


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