It usually starts with a phone call. Someone tells you they have identified your home as eligible for a free or heavily subsidised insulation scheme — perhaps through the government’s energy efficiency programme. They may sound professional, they may reference real-sounding organisations, and they may create a sense of urgency. The offer sounds too good to ignore.

Cold calling in the insulation sector is common in the UK, and not every caller has your best interests at heart. This article explains how to tell the difference between a legitimate scheme and high-pressure sales tactics, and what to do if you are unsure.

Why Insulation Cold Calls Are Prevalent

The UK government has, over the years, funded several programmes designed to improve the energy efficiency of homes occupied by lower-income households or those with older, poorly insulated properties. Schemes such as ECO (Energy Company Obligation) and, more recently, the Great British Insulation Scheme fund insulation work across England, Scotland and Wales.

These programmes create a genuine opportunity for households to receive subsidised insulation, and many legitimate contractors operate within these frameworks. The problem is that the existence of legitimate government funding also creates cover for less scrupulous operators who use the same language and branding to generate leads — regardless of whether the homeowner genuinely qualifies, and regardless of whether the proposed work is appropriate for the property.

Common Cold Calling Tactics to Watch Out For

Urgency and Limited-Time Offers

A caller tells you that funding is about to run out, that only a few slots remain in your area, or that if you do not act today you will miss your chance. Genuine government schemes do not operate on a basis of artificial scarcity. Funding availability changes over time, but a legitimate installer will give you time to research and make a decision — they will not pressure you to commit on the phone.

Claiming You Have Already Been Assessed

Some callers tell homeowners that their property has already been “flagged” or “identified” as eligible, suggesting that an assessment has already taken place. In most cases, no such assessment has occurred. The caller is using this as a social engineering technique to lower your resistance to the call.

Referencing Official Organisations Without Being Asked

Legitimate organisations — including local authorities, energy suppliers, and government agencies — do sometimes contact homeowners about insulation schemes, but they rarely ask for an immediate decision on the phone, and they will always be able to provide verifiable contact details and documentation. If a caller invokes the name of a government body or energy company but cannot direct you to an official website or published documentation confirming the scheme, treat this with caution.

Pushing for Spray Foam Specifically

Cold callers promoting spray foam insulation deserve particular scrutiny. Spray foam is not an approved insulation type under many current government energy efficiency schemes, and its use in loft spaces — particularly closed-cell spray foam applied to roof rafters — is now widely recognised as potentially problematic for mortgage purposes. Any caller promoting spray foam for your loft, particularly if they do so on a cold call basis, should prompt immediate caution.

Asking for a Decision Without a Home Visit

No reputable insulation installer will ask you to agree to work without first conducting a physical survey of your property. If you are being asked to commit — verbally, by signing a document, or by providing bank details — without anyone having visited your home and assessed its suitability, stop the conversation.

How to Check Whether a Scheme Is Genuine

If you receive a cold call about insulation and you are uncertain whether it is legitimate, there are a number of steps you can take:

• Ask for the company’s name, registered company number, and the specific scheme they are operating under — then check Companies House and the relevant scheme operator’s website independently before calling back
• Check whether the installer is Trustmark-registered — Trustmark is the government-endorsed quality scheme for home improvements, and installers working under ECO and similar programmes are typically required to be registered
• Contact your energy supplier directly — if the caller claims to be acting on behalf of your energy company, hang up and call your supplier’s official number to verify
• Check the government’s Simple Energy Advice website — which provides guidance on genuine schemes and how to access them

What Legitimate Schemes Actually Look Like

Genuine insulation schemes under ECO4 or the Great British Insulation Scheme involve means-tested eligibility criteria. Typically, households in private rented accommodation or owner-occupied homes on certain means-tested benefits, or in properties with an energy performance certificate rating below a threshold, may qualify. Eligible works are specified and must be carried out by approved contractors to approved standards.

Legitimate installers operating under these schemes will be able to provide clear documentation of your eligibility, will not ask you to sign anything under pressure, and will arrange a proper survey of your property before any work is agreed. They will not cold call you and demand an immediate decision.

If You Have Already Signed Up

If you believe you may have been pressured into agreeing to insulation work by a cold caller, you have statutory rights under UK consumer protection law. The Consumer Contracts Regulations 2013 give you the right to cancel contracts entered into at a distance or off-premises (including by telephone) within 14 days, without giving a reason and without penalty. If work has already been carried out and you have concerns, you can seek advice from Citizens Advice or contact Trading Standards.

Key Takeaways

• Insulation cold calling is common in the UK — not all callers are operating a legitimate scheme
• Warning signs include artificial urgency, unverifiable claims, and pressure to decide without a home visit
• Cold callers promoting spray foam specifically for loft insulation deserve particular caution
• Verify any scheme independently — check Trustmark registration, government websites, and official scheme operator lists
• You have the right to cancel within 14 days if you were signed up over the phone