A new roof is one of the most significant investments a homeowner can make — and finding a trustworthy contractor to protect it can be challenging. Good roofers are in high demand, especially during peak seasons, which can attract rogue traders.

Learn how to distinguish between true professionals and those to avoid, vet contractors thoroughly and secure a fair deal for high-quality work with the following pointers.

1. Verify Credentials and Trade Body Membership

This is the non-negotiable first step. A legitimate business will readily provide its credentials and affiliations, so be wary of those that are reluctant to share theirs.

When talking to contractors, ask about their public liability insurance, which should cover several million pounds to protect the homeowner’s property from accidental damage. Employers’ liability insurance is another legal requirement if contractors have employees.

Think of trade bodies as trust signals. Firms that are members of a recognised trade body, such as the National Federation of Roofing Contractors, have been rigorously vetted against high standards.

Firms and professionals affiliated with TrustMark are also credible, as it’s a good indication of their technical competence and excellent customer service. TrustMark is a Government-Endorsed Quality Scheme that helps homeowners find reputable tradespeople in the UK.

2. Prioritise Local Experience and Plan Ahead

A local contractor has a reputation to protect within the community. They ensure compliance with their in-depth knowledge of local planning regulations and building codes. They also have established relationships with local suppliers, which can help with material availability.

If a problem arises, a local firm is nearby to address it, rather than being hours away. Note that top contractors are often booked months in advance during peak construction periods, such as spring and summer, so plan ahead. Start the search for a contractor well before the work needs to be done.

3. Scrutinise Written Quotes and Contracts

An “estimate” is a rough guess, while a “quote” is a fixed price offer. Always insist on a formal, written quote when consulting contractors. The quote must have these essential details:

• Line-item breakdown of all costs, from materials to labour
• A clear scope of work, specifically what is and is not included
• Payment schedule, whether it’s by deposit, mid-project or upon completion
• Project timeline, including the estimated start date, completion date and duration of each construction phase

Ensure the written contract includes everything from the cost, the materials and techniques to be used and the scope of work to be done.

4. Understand Onsite Legal Responsibilities

Under the Construction Design and Management Regulations 2015, the homeowner or the “client” has legal duties regarding health and safety. However, for domestic projects, these duties are automatically passed to the contractor. A professional will know this and should be able to explain their safety plan.

Contractors must manage the risks of fragile surfaces, falls from height and falling objects. A competent professional will identify these dangers during the initial inspection.

5. Recognise the Red Flags

Be wary of working with contractors that exhibit these warning signs:

6. Enquire About Waste Disposal

In 2022, Environment Agency workers found buried asbestos when searching a site in the South West. Police arrested the site’s operator. Not only was the waste mishandled, but asbestos is a hazardous material that kills around 20 trade workers weekly due to past exposure. It must be disposed of by specialist contractors, as it’s dangerous to people and the environment.

A roofing project generates waste, from felt and packaging to old tiles and asbestos. It’s the professional contractor’s responsibility to ensure everything is disposed of legally, safely and responsibly. Failure to comply can result in fines for both the firm and the homeowner.

Ask contractors about their waste disposal procedure. Find out if they’re a registered waste carrier, which means they’re authorised by government agencies to transport waste as part of their operations.

Building Trust is Key When Vetting Contractors

Verify credentials, get everything in writing and look for the signs of a true professional. Keep in mind that due diligence is not about being difficult, but about protecting a major financial investment and ensuring peace of mind. By following these pointers, homeowners can confidently hire a contractor who will deliver a safe, compliant and high-quality roof project.