Jasonic
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Jasonic
We are a locally owned, family run business committed to serving the needs of local trades people and DIY enthusiasts alike. Jasonic also supply building products to facilities management companies as well as local authorities and the general public. We stock and supply a full range of building products and tools for customers across the South and Mid Wales region.

From timber and joinery to aggregates and concrete products - we can supply all that's needed from foundations to roof tops. For internal fixtures; please see our wide range of internal and external doors and also kitchen sinks and taps and bathrooms too. Our main products are listed on our website but if you can't find what you are looking for please give us a call on 01685 723344 or 02920 820999.
Services
Originally the company was set up by Johanna Brown and her late husband Mervyn who named the company after their two children. Jasonic was set up to service the vibrant Merthyr Tydfil area which at the time had a large amount of building work being undertaken. The company ethos remains the same today as it was then and is based on supplying good quality products at very competitive prices, supported by excellent service and reliability.
At Jasonic, we offer a wide range of tools and equipment suitable for both trade, contract use and D.I.Y. In our well stocked shops we have a variety of general building equipment but should you need something in particular just pop in to see us or give us a call and we can order it for you.
The Celotex range of PIR products provides thermal insulation solutions that fully meet the requirements of current legislation as well as the demands of building professionals, specifiers and users. These developments are represented in our depth of product offer; Celotex offers an unrivalled range of thickness, from 12mm - 200mm, with products suitable for floor, wall, pitched and flat roofing applications.
At Jasonic we keep a comprehensive range of general valves for plumbing and heating installations that includes gate valves, stopcocks, butterfly valves, as well as many other valves and yellow brass products. We have a collection of high quality kitchen taps, bathroom taps, shower fittings and wastes.
As well as being an established Builders Merchant, we also now specialise in roofing materials and stock products from all the major manufacturers such as Marley, Redland and Cembrit which include a clay and concrete tile range. Marley Eternit is the leading provider of roofing and cladding solutions to the construction industry.
Reviews (8)
Matt Lake
Matt Lake
Aug 20, 2021
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My go to place for materials. Very friendly and helpful. Always had stock I wanted. Prices on a par with "big name" chains but the quality is better imho
Pedro Mountstephens
Pedro Mountstephens
May 11, 2021
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Good local builders merchant, offer delivery too. All the guys who work there are friendly and will assist in any way.
David Turner
David Turner
Nov 13, 2020
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Great products and prices.
Mark the manager had a wealth of knowledge and when Lee delivered my blocks and sand his professionalism and social distancing made me feel completely safe.
Thank you both.
Juratukas S.
Juratukas S.
Nov 08, 2020
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Amazing service, great prices and reliable business. Definitely our favourite 🤩 Undoubtedly recommend to everyone!
Nathan Obrien
Nathan Obrien
Jun 15, 2020
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Amazing service by these guys they are so flat out at the moment but still friendly and deliver when they say they will at good prices and good quality goods.
The driver was really friendly and made life much easier
Nimo Nimo
Nimo Nimo
Jul 16, 2019
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Great guys these dudes!!! Recently started using this builder's supply merchant's and to be fair they have beat likes of other major suppliers like selco, tps, jewsons on prices by miles... This is a independent family owned business by what I've heard, but the level of service, delivery, and prices is miles ahead of the big boys, I've only traded with their Taffs Well branch, and the staff are very welcoming and informative on every aspect of the building trade, it's a shame they haven't got a base near Ocean way area of Cardiff or Penarth Rd area as they would do brilliant, but then again they
Frederick John Berry
Frederick John Berry
Jul 12, 2019
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Friendly service from the staff, Mark is a very happy guy who is a good manager
Mark Walters
Mark Walters
Jul 28, 2018
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Ordered timber but a quantity was incorrect size. Said they would drop off the correct wood the next day...did not turn up. Telephoned and revisited store a number of times in Taffs Well, still did not receive wood. Lesson learnt, Whitchurch Builders Supplies from now on! ---- THIS ORIGINAL REVIEW WAS ONE STAR, but they NOW have a new guy running the place. Now much more professional and helpful staff with deliveries turning up correct and on time. 👍