Tri Dyn Electrical and Building Services
Caerphilly, Mid Glamorgan
Checkatrade member since March 2023
Services
- Wall Tie Replacements
- Brick / Concrete Structural Repairs
- Concreting
- General Building
- New Builds
- Fire and Flood Renovation
- Partition Walls
- Basement / Cellar Conversions
- Extensions / Conversions
- Loft Conversions
- Project Management
- Refurbishments
- Sustainable Construction
- Suspended Ceilings
- Building Merchants
- Property Maintenance / Repair
- Cladding
- Car Ports
- Mastic Sealant
- Garage Conversions
- Stretched Ceilings
- Foundations
- Insurance Claim Specialist
- Structural Steels
- Structural Design
- Steel Fabrication
- Steel Work Design
- Garden Studios
- Concrete Garages
- Demolition
- Emergency Builder Service
Customer Reviews
Write a review9.92 /10
Based on 4 reviews over the past 12 months
Quality of work
9.75
Reliability
10
Communication
10
Reviews (18)
- MMererid P
10 Bathroom changed into a bedroom with en-suite and upstairs bedroom changed into a bathroom.
Posted 30 May
Brilliant, fantastic, amazing. As a single woman I had major concerns finding a good, reliable builder- no more as I have found a gem in Liam and his team. They put me at ease and made the whole process stress free. From word go Liam turned up to view the job when he said he would. He supplied a detailed quote showing me exactly what I was paying for. The team were reliable and trustworthy. It was lovely seeing their friendly faces every day. The work has been completed to a very high standard. I am extremely happy with the end results. I highly, highly recommend Tri Dyn.Verified reviewerJob location: CF47 10 Brilliant service ⭐⭐⭐⭐⭐
Posted 10 April
After buying a house with many problems i contacted TRI DYN & I'm so glad I did. Throughout the whole process there was good communication, good time keeping, always friendly, honest, tidy & polite. I had a leaking wet room that needed taking out & a new bathroom installed. I couldn't be happier. Liam & Sian work there socks off & are a great team! Always giving me the best advice along the way. I also found a leak on the chimney & condensation in the attic. Again I called TRI DYN & the knowledge, experience & workmanship was brilliant. I can't recommend these guy's highly enough!Verified reviewerJob location: CF839.67 5 STAR BATHROOM FITTER
Posted 19 December 2025
What can I say other than I would beyond recommend Liam. From the moment he came to give me a quote and look at the job I had a good vibe from his friendly attitude to his expertise when I was asking questions. The work was carried out efficiently over 2 days as agreed. The areas were left clean after each day and most importantly the work was completed to a high standard. I can not recommend Liam enough. Such a nice guy with great silicone skills which is very important to me. Approaching Liam throughout the job was never an issue and my happiness with the work was his priority.Verified reviewerJob location: CF2410 Girder replacement
Posted 01 December 2025
What can I say! Liam, Keiron and Bernie were professional, understanding and helpful during our works: Replacing a 25 year old girder supporting our main bedroom. They explained the process at each stage. We felt confident with their knowledge and experience dealing with a complex situation and the works completed to a high standard. We will definitely use them again and recommend them.Verified reviewerJob location: CF4410 Removal of internal wall, fire place reopening and plastering of ceilings
Posted 20 June 2025
Absolutely outstanding from start to finish! Communication was spot on from start to end! Really friendly and helpful with any questions I had along the wayVerified reviewerJob location: SA1210 Preparing garage for fitting of double electric doors and supplying electric feed too the garage
Posted 11 May 2025
They were great company too do the work we needed to have done they were very professional and very easy to get on with. They were great communicators they keep you informed on everything that they do cannot fault them at all. Would highly recommend themVerified reviewerJob location: SA11
Photos
Company Info
Owner
Mr Liam Williams
Sole Trader
3 years on Checkatrade
VAT Registered
No
Who We Are
TRI DYN Construction Ltd is a family-run building and electrical company with over 30 years of experience in the construction industry. We take pride in providing a professional, reliable and friendly service, working closely with our customers from the initial enquiry through to completion.
Our experience covers everything from smaller building and electrical works through to larger extensions, renovations and structural projects. We take pride in our workmanship and aim to deliver a high standard of finish on every project.
What We Do
We cover a wide range of building and electrical services, including:
● Extensions and property renovations
● Structural alterations and RSJ/steel installations
● Roofing and roof repairs
● Slate and tiled roofing
● Roof extensions and cut-in roofs
● Windows and doors
● Kitchens and bathrooms
● First and second fix plumbing and electrical works
● Consumer unit upgrades and electrical installations
● Studwork, plasterboarding and plastering
● Flooring and floor strengthening
● Insulation and general building works
● External works, rendering and cladding
We undertake both smaller works and more complex projects, tailoring our service to the individual requirements of each customer.
We primarily cover Cardiff and surrounding areas across South Wales, including Penarth, Bridgend, Caerphilly and the surrounding areas.
Why Choose TRI DYN Construction Ltd?
With over 30 years of experience, we understand the importance of doing a job properly and maintaining good communication throughout the project.
We believe in being professional, tidy and respectful in our customers’ homes, while keeping them informed as the work progresses. Whether we’re carrying out a small repair, installing structural steel or completing a full extension and renovation, we approach every job with the same attention to detail.
Our aim is simple: quality workmanship, reliable service and a finished project our customers can be proud of.
This trade passed up to 12 Checkatrade vetting checks
Member since March 2023
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