Insulation fitted under ECO4 or GBIS? Check your repair options

Urgent Insulation Problems: What to Do First

If failed insulation has led to water coming in, a wall or ceiling you are worried about, electrical danger or serious damp and mould, start here. This page gives general safety steps and who to contact. We are an advice and introduction service, not an emergency service.

Is Anyone in Danger Right Now?

Call 999 if:

  • Medical emergency: for example severe difficulty breathing, or an asthma attack where the reliever inhaler is not helping
  • Immediate danger to people: a ceiling, wall or section of render that looks about to fall
  • Fire: including smoke or burning smells from electrics

Emergency numbers

  • 999: immediate danger to life
  • Gas emergency (Great Britain): 0800 111 999, free, 24 hours, if you smell gas or suspect carbon monoxide
  • 105: free, to report power cuts or electrical hazards on the network
  • NHS 111: medical help that is not an emergency

Then, once it is safe:

  1. 1
    Keep people away from the danger: close off affected rooms or areas below loose render
  2. 2
    Water near electrics: do not touch switches if you are standing in water; turn the electricity off only if it is safe to do so
  3. 3
    Gas or carbon monoxide: stop using appliances, open doors and windows, get everyone out and call 0800 111 999. If insulation work covered vents or flues for a gas appliance, do not use it until a Gas Safe registered engineer has checked it
  4. 4
    Take photos and tell the installer in writing. ECO4 or GBIS wall insulation: contact TrustMark (external) or Ofgem (internal) as well
  5. 5
    If you rent: tell your landlord in writing. In England, social landlords must make emergency hazards safe within 24 hours under Awaab's Law. Private renters can ask the council's environmental health team to inspect

What Kind of Problem Are You Facing?

Select your situation for general next steps

Who to Contact

Schemes, Guarantees and Councils

TrustMark

Free Find & Fix audit for ECO4/GBIS external wall insulation, and complaints about TrustMark-registered businesses

Phone: 0333 555 1234 (option 1 for Find & Fix)

Find & Fix bookings: onsitebookings@trustmark.org.uk

TrustMark complaints process

Ofgem ECO contact centre

Concerns about ECO4/GBIS external or internal wall insulation. Ofgem does not handle individual complaints about installers.

Freephone: 0808 169 4447 (Monday to Friday, 9.30am to 4.30pm)

Email: ECOhelp@ofgem.gov.uk

CIGA

Cavity wall insulation guarantees

Phone: 01525 853300Email: concerns@ciga.co.uk

Your local council

Environmental health can inspect rented homes with serious hazards such as damp and mould

Find your council on gov.uk

Free Advice

Citizens Advice consumer helpline

Advice on consumer rights; can pass complaints to Trading Standards

Phone: 0808 223 1133 (Monday to Friday, 9am to 5pm)

Dispute Resolution Ombudsman

For TrustMark-registered businesses, after the business and its Scheme Provider have had the chance to respond. It cannot deal with compensation claims or businesses that have stopped trading.

Phone: 0333 241 3209

Shelter

Advice for renters dealing with damp and mould

Damp and mould in rented homes

NHS 111

Medical help when it is not an emergency

When to use 111

Your Rights, in Brief

General information, not legal advice. For your situation, speak to Citizens Advice or a solicitor.

Once the Immediate Danger Is Dealt With

If your external wall insulation was fitted under ECO4 or GBIS, start with TrustMark's free Find & Fix audit. For anything the free routes do not cover, we can introduce you to a specialist through Better Home Hub.

Sending an enquiry is free. Any survey or work is agreed and paid for between you and the specialist, who may pay Better Home Hub a fee. We do not provide emergency call-outs and cannot promise how quickly a specialist will respond. Check a specialist's registration, insurance and guarantee yourself, for example on the TrustMark, CIGA, PCA or RICS registers. To talk to Better Home Hub: 03330 505 281 or hello@betterhomehub.co.uk (not an emergency line).

Keep a Record

Installers, guarantee providers, auditors and complaints bodies will all ask what happened and when.

Photos and videos
  • • Damp, mould and water coming in, with wide shots and close-ups
  • • Cracks, loose render or other damage
  • • Blocked vents or condensation
Installation documents
  • • Contract, quote or invoice
  • • Guarantee certificate
  • • Ofgem letter with your Unique Measure Reference Number, if you have one
Communication
  • • Emails and letters with the installer
  • • Notes of phone calls: date, who you spoke to, what was said
Reports and costs
  • • Any audit, survey or engineer reports
  • • Receipts for emergency repairs or dehumidifiers

Photograph damage before cleaning or moving anything, follow up phone calls in writing, and keep copies of everything you send.

Sources

Last reviewed September 2026.

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