Loft Insulation Scam Calls: The Rise of AI Voices and Fake Home Surveys

Loft insulation scam calls often begin with what sounds like a harmless enquiry about your home. The caller may introduce themselves as a local energy adviser, ask whether you own your property or offer to arrange a free inspection.

But some homeowners are reporting something unusual: friendly, human-sounding voices that repeat questions, talk over responses or appear unable to answer when challenged.

Our latest investigation into nuisance-call reports has uncovered a sharp rise in complaints mentioning loft insulation, damp and mould, alongside recurring reports of mysterious callers using names including Jackie and James.

With some recipients suspecting they’re speaking to automated voices rather than real people, we examined what these callers are asking, the patterns emerging from the reports and how homeowners can protect themselves.

How do loft insulation scam calls work?

Rather than immediately offering a product or service, the caller may ask whether you’re the homeowner, how old your insulation is or whether you’ve noticed damp, mould or condensation.

Common approaches described in nuisance-call reports include:

• Free loft insulation surveys: Offering to check whether existing insulation needs replacing.
• Damp and mould concerns: Suggesting that older insulation could be contributing to moisture problems.
• Government grant claims: Referring to energy-efficiency schemes or suggesting that homeowners may qualify for assistance.
• Local energy adviser introductions: Claiming to work in your area or to be contacting homeowners in your postcode.
• Surveyor appointments: Offering to arrange a home visit to inspect the property.

Not every unsolicited insulation call is fraudulent. Legitimate businesses also offer home-improvement services and energy-efficiency assessments.

However, an unexpected caller cannot reliably determine whether your insulation needs replacing without inspecting your property.

Be particularly cautious if someone makes alarming claims about your home or pressures you into agreeing to an appointment.

Why do these callers ask whether you own your home?

One question appears repeatedly in reports about home-improvement calls:

“Are you the homeowner?”

For a business offering property-related services, this helps establish whether someone might be able to authorise work.

Once a recipient confirms they own the property, the conversation may move towards insulation, damp, mould or possible home improvements.

Some reports also describe callers asking for postcodes, addresses, ages or other personal information.

While individual questions might seem harmless, there’s no reason to share details about your property or circumstances with someone whose identity you haven’t verified.

If you’re interested in an insulation survey, it’s safer to research a reputable company independently.

Are AI voices being used in loft insulation calls?

Some recipients believe the calls they’re receiving are automated, even when the voices sound surprisingly natural.

Traditional automated calls often used obvious recorded messages or robotic voices. Modern voice technology, however, can produce speech that sounds increasingly realistic.

Some systems can also recognise spoken responses and continue a conversation based on what a person says.

This means a caller may sound friendly, conversational and convincing without necessarily being human.

In reports submitted to NuisanceCalls.org.uk, recipients have described several behaviours that made them suspect automation:

• The caller talks over their answers.
• Questions are repeated despite having been answered.
• The caller continues with a prepared script when challenged.
• Questions about the company or purpose of the call are ignored.
• The conversation ends abruptly when the recipient asks unexpected questions.

These behaviours may suggest automation, but they don’t prove that a caller is using artificial intelligence. Pre-recorded messages and human callers following scripts can behave similarly.

A realistic-sounding voice isn’t proof that you’re speaking to a real person.

Who are Jackie, James and the other suspected automated callers?

Our investigation identified recurring reports of callers using names including Jackie, James, Jo and Emma. Jackie is frequently described asking whether someone owns their home or has experienced damp or insulation problems, while James reportedly introduces himself as a local energy adviser. Some recipients describe conversations that sound scripted or automated.

Between June 2025 and October 2026, we identified 237 reports mentioning Jackie, associated with 175 reported caller IDs. Of these, 116 described or suspected automation.

Our wider analysis of named callers found:

Not all reports involving these names relate to loft insulation, damp or mould. Although some reported telephone numbers overlap, caller IDs can be spoofed, and we haven’t established whether the callers are connected or who is responsible.

Why does ‘AI Jackie’ keep calling from different numbers?

Blocking an unwanted caller doesn’t always mean the calls will stop.

Phonely’s analysis of reports submitted between 1 January and 21 October 2026 identified 236 reports naming Jackie, associated with 174 different reported telephone numbers.

Of these, 116 reports described or suspected an automated voice, spanning 111 different reported telephone numbers.

Some people also described receiving repeated calls from Jackie despite blocking previous numbers. One reported calls from at least four different numbers in a single week, while another said a similar number appeared after they blocked the original caller.

These findings suggest why blocking individual numbers may not always prevent further unwanted calls. However, they do not establish that the same person or organisation was responsible for every call, or that AI technology was used. Telephone numbers displayed to recipients can also be spoofed.

What types of insulation and property calls are people reporting?

To understand the scale of the wider issue, we analysed approved comments submitted to NuisanceCalls.org.uk, formerly WhoCalledMe.

Our research compared reports mentioning loft insulation, damp or mould between 1 January and 21 October in 2025 and 2026.

What were people reporting?

Our 2026 analysis identified:

This means approximately 15% of the reports explicitly described or suspected some form of automation.

The year-on-year increase is substantial, although monthly reporting volumes have fluctuated. The highest monthly total in 2026 was recorded in March, rather than at the end of the research period.

It’s also important to distinguish between reports of suspicious calls and confirmed scams.

These figures represent descriptions submitted by members of the public. They don’t establish that every call was fraudulent or that the number of actual calls increased by the same percentage.

Are free loft insulation surveys a scam?

Not necessarily.

Some legitimate insulation businesses offer free initial surveys or assessments.

However, homeowners should be cautious when an unexpected caller claims their property has a problem or needs urgent attention.

Some nuisance-call reports describe offers of free assessments followed by discussions about possible charges or replacement work.

Others describe callers raising concerns about insulation without any prior inspection.

Before agreeing to a survey, consider the following:

• Verify the company: Look up its contact details independently and check its reputation.
• Ask about costs: Establish whether the inspection is genuinely free and whether there are any conditions.
• Check grant claims: Confirm eligibility for government-backed schemes through official sources.
• Avoid rushed decisions: Don’t agree to expensive work during an unexpected phone call.
• Get another opinion: If you’re told your insulation needs replacing, consider asking another reputable specialist to assess it.

Similar tactics can appear in other property-related approaches. We’ve also published advice on fake home repair scam calls and suspicious offers of property repairs.

What does the law say about automated marketing calls?

UK privacy rules restrict the use of automated calls for direct marketing.

Under the Privacy and Electronic Communications Regulations (PECR), organisations generally need specific consent before making automated marketing calls using recorded messages.

In September 2025, the Information Commissioner’s Office (ICO) fined two energy companies a combined £550,000 for unlawful automated marketing calls.

The regulator found that the companies used pre-recorded voices introducing themselves as Jo, Helen and Ian to arrange home surveys that could lead to insulation sales.

The case demonstrates how apparently personal telephone conversations can be delivered using recorded voices.

You can read the ICO’s findings about unlawful automated energy marketing calls.

There is no established connection between those companies and the callers identified in our investigation.

How to protect yourself from loft insulation scam calls

Whether you’re speaking to a human caller, a recording or an AI-powered system, the same precautions apply.

1. Don’t share personal information unnecessarily

Avoid confirming whether you own your home, your age, whether you live alone or your full address with an unidentified caller.

2. Ask who is calling

Request the company’s full name and independently verify its contact details before continuing the conversation.

3. Be cautious about claims concerning your property

A caller cannot reliably diagnose problems with your loft insulation, damp or mould simply through a telephone conversation.

4. Check government grant claims

If someone suggests you’re eligible for an energy-efficiency grant, check the information through official government guidance.

5. Don’t feel pressured into a survey

You can decline an appointment, ask for written information or end the call.

6. Consider nuisance-call protection

Call-screening features can help you identify unfamiliar callers before deciding whether to answer.

For households receiving frequent unwanted calls, a digital landline with nuisance-call protection can help manage unknown callers.

7. Report unwanted calls

You can report nuisance marketing calls to the Information Commissioner’s Office and share suspicious numbers with a nuisance-call reporting service.

How we carried out the research

We analysed approved reports submitted to NuisanceCalls.org.uk, formerly WhoCalledMe.

The main research compared written reports mentioning loft insulation, damp or mould between 1 January and 21 October in 2025 and 2026.

We searched the text of reports rather than relying solely on the categories selected by people submitting them.

Reports mentioning multiple subjects were counted once in the combined total.

We also carried out a separate analysis of recurring caller names, including Jackie, James, Jo and Emma, and reports describing suspected automation.

Research limitations:

• Reports are submitted by members of the public and don’t necessarily represent unique calls, callers or recipients.
• Descriptions of AI or automation are based on recipients’ observations rather than independent technical verification.
• Some longer comments may have been truncated, and relevant reports using different terminology may not have been captured.
• Caller IDs can be spoofed and don’t necessarily identify the organisation responsible.
• Our research doesn’t establish that every reported call was fraudulent or that the different named callers are connected.

How to stay safe from suspicious insulation calls

Whether you’re speaking to a real person, a recording or a potentially AI-powered voice, the same advice applies: don’t feel pressured into sharing personal information or agreeing to a home survey. If you’re concerned about your insulation or the condition of your property, contact a reputable professional independently rather than relying on an unsolicited call.