Initial Triage
For a suspected mains gas leak, call the National Gas Emergency Service on 0800 111 999 first. After the emergency has been made safe, contact TJ&H to discuss remedial repairs.
TJ&H · St Asaph & North Wales
Gas Leak Detection & Repair in St Asaph
Rapid, safe gas leak testing and repairs across St Asaph. Gas Safe engineers, same-day call-outs, clear communication via phone or WhatsApp and a 12 month workmanship guarantee that if our work has failed due to our workmanship, then we will make it right.
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Your Local Gas Leak Detection & Repair Experts
Our Gas Safe-registered engineers lead every gas leak investigation and repair in and around St Asaph. Trained, vetted and experienced, the team use electronic sniffer testing, pressure checks and tracer techniques to pinpoint leaks, then isolate systems safely in line with statutory procedures. We offer same-day emergency response, clear on-site communication and written safety verification on completion.
How It Works
Locate and Isolate
On arrival our Gas Safe engineers use electronic sniffers, pressure testing and tracer methods to locate the leak, then isolate the supply following statutory safety procedures.
Repair and Verify
We carry out remedial repairs using certified parts, retest the system, and issue written safety verification and advice before restoring service.
Why Choose us for Gas Leak Detection & Repair?
Experienced, accredited engineers
Gas Safe-registered and OFTEC accredited technicians with 18 years' hands-on experience, giving you confidence on complex leak investigations.
Fast, safety-first response
Emergency same-day call-outs and strict adherence to statutory isolation and testing procedures to protect occupants and property.
Guaranteed workmanship and clear records
All repairs include a 12 month workmanship guarantee and a written safety verification report on completion for peace of mind.
What this service covers
How we find and fix leaks. Our engineers use a combination of electronic gas detectors, controlled pressure tests and tracer techniques to locate even small or concealed leaks. Once found, we follow statutory procedures to isolate the supply, make repairs with certified components and retest the system to confirm safety. Work is recorded and a written safety verification is provided on completion.
Emergency response and communication. For a suspected mains gas leak, call 0800 111 999 first. After the emergency has been made safe, contact TJ&H on 01745 299210 to discuss repair work. TJ&H Plumbing & Heating hold Gas Safe and OFTEC accreditation and back repairs.
Frequently Asked Questions
What should I do immediately if I suspect a gas leak?
Leave the property straight away, move everyone to a safe location and avoid using electrical switches, phones inside the building or open flames. From a safe location, call the National Gas Emergency Service on 0800 111 999. Do not wait for a reply to an email or WhatsApp message.
How do your engineers locate a leak?
Engineers use electronic gas detectors, controlled pressure tests and tracer methods which allow them to pinpoint leaks in pipework, joints and appliances. Tracing methods help locate concealed or subfloor leaks without unnecessary disruption.
Will you turn off my gas during the investigation?
Yes. If the leak presents a safety risk we will isolate the gas supply following statutory safety procedures. Isolation is done in a controlled way and we will only restore supply after repairs and full retesting confirm the system is safe.
Are repairs certified and documented?
All remedial work is carried out by Gas Safe-registered engineers using compliant parts. After repair we perform tests and provide written safety verification and a service record for your files.
Do you cover nearby towns and offer same-day call-outs?
Yes. We cover St Asaph and surrounding areas, and we offer emergency same-day call-outs where possible. Contact our team early by phone or WhatsApp to secure an urgent appointment.
Coverage & related services
Based in St Asaph, we cover surrounding North Wales towns. Check the areas we serve or contact us with your postcode.