At Weatherproofing Advisors, we continue to deliver complex refurbishment projects across the UK. A recent example is our work at Dunelm Merthyr Tydfil, where we were appointed to refurbish the roof and gutters of the store.
Located in the heart of South Wales, this project demonstrates how careful planning and technical expertise can transform a building envelope that had deteriorated significantly over time.
👉 You can also view this project in our portfolio here: Dunelm Merthyr Tydfil Roof Refurbishment.
The Problem: Ageing Roof & Safety Concerns
The Dunelm building featured a shallow duo-pitch metal-clad roof with boundary gutters running along the east and west elevations. Over the years, the roof had developed a series of issues:
- Delamination of the protective coating on the profiled metal sheets
- Cut edge corrosion at the sheet laps and eaves
- A large number of perished or missing fixings
- Faded rooflight fixings, which created health and safety risks for maintenance teams
- Deteriorating ridge and verge flashings, with evidence of temporary coating repairs that were no longer effective
These issues meant the roof was no longer performing as intended — both in terms of weatherproofing and safety.
The Solution: Full Roof Oversheet & Gutter Relining
Our team proposed a comprehensive oversheeting solution designed to provide long-term performance and energy efficiency.
Key elements of the refurbishment included:
- 🏗️ Oversheeting of the entire roof using new plastisol-coated profile sheets and a bar & bracket system.
- ❄️ Installation of 160mm quilt insulation, achieving a thermal rating of 0.15/m²K and improving the building’s energy efficiency.
- ☀️ Replacement of rooflights to maximise natural light within the store.
- 💧 Relining of gutters with Ampteam Unifold gutter liners, including new stop ends, unions, and outlets.
- 🛠️ Removal of redundant flues and penetrations, with all remaining ones weathered in line with current regulations.
- 🦺 Installation of a new mansafe system along the ridgeline, ensuring safe access for future maintenance and protecting the client’s warranty.
The Results
The completed refurbishment delivered:
- ✅ A watertight and durable roof system
- ✅ Improved thermal efficiency, reducing energy loss
- ✅ Increased natural daylight through modern rooflights
- ✅ A safer building environment for ongoing maintenance
- ✅ A long-term solution that protects both the building and Dunelm’s operations in Merthyr Tydfil
This project is a strong example of our ability to deliver complex works in live retail environments without disrupting day-to-day trading.
Spotlight On Service Dunelm Merthyr Tydfil.pdf by Weatherproofing Advisors
Why Roof & Gutter Refurbishment Matters in Merthyr Tydfil
Merthyr Tydfil, set in South Wales’ often challenging weather conditions, is no stranger to issues like corrosion, water ingress, and insulation failure in commercial buildings. From retail units like Dunelm to industrial estates, roofing problems can escalate quickly if left unchecked.
A proactive refurbishment ensures:
- Reduced maintenance costs over time
- Better energy performance (vital for modern retail and industrial buildings)
- Compliance with health and safety standards
- A more professional appearance for customers and staff
For businesses in Merthyr Tydfil and across South Wales, investing in roof and gutter refurbishment is about much more than aesthetics — it’s about safeguarding assets and ensuring operational continuity.
Weatherproofing Advisors in South Wales
With over four decades of experience, Weatherproofing Advisors has built a reputation for technical excellence, safety leadership, and outstanding service. We support businesses in South Wales with:
- Roof and cladding refurbishment
- Gutter repairs and relining
- Safety systems including mansafe and access solutions
- Surveying, dilapidations, and aftercare services
Our culture of “service the WPA way” means going the extra mile for clients, delivering solutions that combine long-term durability with minimal disruption.
Final Thoughts
The Dunelm Merthyr Tydfil refurbishment highlights how Weatherproofing Advisors combine practical expertise, modern materials, and safety-first planning to protect and enhance commercial buildings.
From oversheeting and gutter relining to insulation and mansafe installation, this project ensured that Dunelm can continue serving customers in Merthyr Tydfil with a modern, safe, and efficient building.
👉 Learn more about this project in our portfolio: Dunelm Merthyr Tydfil Roof Refurbishment.
