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southampton city council home Insulation Offer

  • Cocoon can insulate cavity walls and most lofts for free 
  • Only £69 if you incur a charge to top up your loft insulation
  • Council grant managed exclusively by Cocoon
  • Supported by Southampton Low Carbon Group 
  • Available to homeowners and private tenants
  • See our home insulation grants page for conditions
  • Apply now by simply getting a free estimate
Compare local cavity wall and loft insulation prices in minutes - insulation grants, deals and offers are available now. Cavity Insulation Guarantee Agency All our insulation installers are members of the National Association of Installers
All our installers are certified by the Microgeneration Certification Scheme All our installers are certified by the REAL Assurance Scheme
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  • "Excellent. Nice lads"

    Mr Farragher, Gerrard Cross

  • "1st class service. Great installers"

    Mr Oakenfull, Southampton

  • "Absolutely superb. So clean, tidy and very helpful"

    Mrs Russell, Portsmouth

  • "Seeing the benefits already. Very friendly installers"

    Mr Anderson, New Milton

  • "Excellent, I'm very happy. Brilliant work, very tidy and polite"

    Mr Egglesfield, Aylesbury

  • "Impressed with speed it was installed and no mess was made"

    Mrs Nichols, Buckingham

  • "Brilliant. 1st class service"

    Mrs O'Hara, Leighton Buzzard

  • "Very impressed. Prompt and personable"

    Mr Seymour, Watford

  • "Pleasant and courteous. I'm really impressed"

    Mrs Goodall, Romsey

news tips, advice, info...
Compare local cavity wall and loft insulation prices in minutes - insulation grants, deals and offers are available now.

Cocoon insulation goes FREE!!

There could not be a better time to insulate your cavity wall or loft with our FREE insulation offer open to all. read more...

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Wycombe helps residents to stay warm and counter increase in energy bills

Wycombe council has made additional grant funds available for its Wycombe 500 Houses Challenge. read more...

Compare energy prices from all UK energy suppliers in minutes

Scottish Power launch record beating cash-back offer

Cocoon Energy are pleased to announce a £40 cash-back per fuel on every Scottish Power energy transfer. read more...

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Cocoon is operated by United Sustainable Energy Agency - a not for profit company. Registered in England No. 3553525.

+terms and conditions apply

Free insulation available for standard Cavity Wall Insulation and Loft Insulation where existing loft insulation is less than 60mm in thickness. Loft top-ups from 60mm - 150mm of existing loft insulation costs £159. Extra charges will apply for the fitting of walk boards, storage platforms and scafolding (if required). You may also be charged extra if your house exceeds maximum square area limits for your property type. You will be provided with a full quote detailing any addtional charges before the installation commences.