Casement Windows & Sash Windows

Our Rehau products are A Rated & demonstrate a high gloss finish to create the best possible look for your home

Hurst & Hallmark Composite Doors

Our company operates in partnership with Hurst & Hallmark for Composite Door installations. Hurst & Hallmark are two of the largest composite door manufacturers in the UK and offer a wide range.


We offer a wide range of possibilities for your choice of conservatory. From glass roofs and warm roofs and a variation of door choices such as French Doors & Bifolds. Our team will help you make your conservatory dreams a reality

Celtic uPVC Why Choose Us?

Celtic UPVC is a South Wales based business that prides itself on providing a cost-effective friendly service for all of our customers, helping you make the dreams for your home become a reality.
Our family-run workforce boasts over four decades of experience within UPVC product installation, with the majority of our Rehau products being manufactured in house at our local factory in Ponthenry, Llanelli.
FENSA Approved Fitter
Celtic uPVC
Unit 5, Ponthenry Industrial Estate, Ponthenry, Llanelli, SA15 5RA
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