Croeso | Welcome to DJ Roof Test UK
Flat Roof Leak Detection & Testing in Wales and beyond – Fast, Accurate & Non-Destructive
We locate leaks without damaging your roof and provide full surveys and certification across Wales and the UK.
We specialise in roof testing, leak and verification programs, roof surveys, specification certification, maintenance and Inspection, With our advanced equipment and experienced team, we provide top-quality services to ensure the durability and integrity of your rooftops.
Drop us a line using the short form below to discuss your project and get a quick quote...
Leak Detection & Verification
We accurately locate roof leaks without causing any damage to your property. Using non-destructive testing methods and advanced equipment, our experienced team provides fast, reliable leak detection and verification for all types of flat roofing systems.
As a fully independent service, we deliver honest, unbiased results you can trust – whether you're dealing with a suspected leak or need confirmation that a repair has been successful. Our detailed inspections help you avoid costly future damage and ensure your roof remains watertight.
Roof Condition Surveys & Certification
Our experienced surveyors carry out thorough roof condition surveys to assess the health of your flat roofing system. We identify any current issues, potential risks, or maintenance needs—giving you a clear picture of your roof’s performance.
Each survey includes detailed reports and professional certification, ideal for meeting insurance requirements, warranty claims, or industry compliance standards. Whether you’re a building manager, contractor or property owner, our independent inspections provide the reassurance and documentation you need to make informed decisions.
Ongoing Maintenance & Inspection Plans
We provide regular maintenance inspections to help you keep your flat roof in excellent condition all year round. Our scheduled checks are designed to spot early signs of wear, prevent costly repairs, and extend the life of your roofing system.
We work with a wide range of roof types – including green roofs, blue roofs, and inverted flat roofs – tailoring our inspection plans to suit your building and usage. Whether you manage a commercial site or a residential block, our proactive approach ensures your roof stays watertight, compliant, and hassle-free.
About DJ RoofTest UK
Flat Roof Leak Detection & Non-Destructive Testing Experts in Wales and beyond
At DJ RoofTest.uk, we specialise in professional, non-destructive waterproofing and geomembrane testing solutions for flat roofs across Wales and throughout the UK. With over 30 years of industry experience, we’ve built a strong reputation for delivering accurate, independent flat roof leak detection and integrity testing services you can trust.
Our expert team uses advanced equipment and proven techniques to carry out a range of services, including:
Flat roof leak detection & verification
Roof condition surveys & specification certification
Regular roof inspections & maintenance plans
We work with commercial property managers, contractors, housing associations and more to ensure roofing systems remain compliant, watertight and long-lasting. Whether you need a one-off inspection or an ongoing maintenance schedule, our fully independent approach ensures you get reliable, unbiased results every time.
Choose DJ RoofTest for:
Honest, professional service
Fast response across Wales
Full documentation and certification for insurance, warranties, or compliance
Industry-Leading Flat Roof Testing Specialists
We Find It. We Fix It.
Expert non-destructive testing for waterproofing membranes, flat roofs, reservoirs, and pond liners.
At DJ RoofTest UK, we provide specialist leak detection and flat roof testing services using the latest non-invasive technology. From commercial rooftops to waterproofing systems and geomembranes, we deliver fast, accurate results backed by full reports and certification.
Our Expert Services Include:
✅ Electronic Leak Detection
✅ Vacuum Pressure Testing
✅ Thermal Imaging (including 5K drone surveys)
✅ Borescope Visual Inspection
✅ Core Sampling Reports & Certification
✅ Dry & Wet Surface Testing
✅ Specification Verification & Integrity Testing
✅ Roof Surveys, Consultancy & QA Support
We are proud to be a fully independent provider, offering honest assessments and certified documentation for insurance, warranty, or compliance needs. Our team supports contractors, developers, and building managers across Wales and the UK with reliable, responsive service.
Contact us
Email us: info@djrooftest.uk
Call: 02922 711449
Our Locations
Northern Division
M-Sparc, Menai Science Park,
Gaerwen, Anglesey, LL60 6AG
Southern Division
4th Floor, 14 Museum Place,
Cardiff City Centre, CF10 3BH