About Us

Jon & Rhodri

Thomas Joinery has a skilled team of workers who design and manufacture traitionally crafted window, doors, conservatories and staircases. All of our glazed windows and doors are U Value tested and some have Secure by Design certification. We have a skilled team of fitters, if required, or can work on a supply only basis. We typically work across South and West Wales and have supplied homes in Pembrokeshire, Ceredigion and Camarthenshire with new joinery items, but also have customers along the M4 corridor and beyond.


Besides undertaking these services, Thomas Joinery are experienced in all aspects of joinery and carpentry, and our knowledge is wide-ranging. We have provided bespoke kitchen units for holiday rentals, spa lockers for a local hotel and many other bespoke projects.

Some of our most frequent jobs include:

Conservatories - We manufacture high quality hardwood and softwood conservatories. Please contact us for a quote and add real value to your home.

Windows - casement windows, bay windows, imitation sliding sash, fire escape windows, and the more traditional sliding sash windows that are roped with weights, all available single or double glazed. All styles of windows, for new builds or conservation replacement.

Staircases - oak staircases, beech staircases, pine staircases, ash staircases and economy staircases are all within our range, contact us for a quote today. Many styles and types of timber are available, with various finishes.

Interior and exterior doors - stable doors, double doors, patio doors, panelled doors, traditional interior styles - please contact us with your specifications.

Product furniture - Thomas Joinery fit all windows and doors with quality ironmongery which is discussed in detail with the customer prior to supply.

Finish - All joinery items are finished to the customer's specification, oiled, waxed, primed, or sprayed to factory finish in a colour of your choice, with a high performance exterior joinery paint.

Aluminium  - We are also now manufacturing and supplying aluminium windows and doors, as well as aluminium framed canopies, verandas and carports.


We are pleased to announce the award of the 'German Passive Haus Institute' Certificate for the manufacturing of Passive Windows & Doors used in the construction of Passive Houses. We also have a sister window manufactured in a more traditional style for non-continental type dwellings.


Thomas joinery only work with and provide responsibly sourced timber that is:

  • traceable back to the source forest
  • from legally harvested forests
  • from forests where forest management practices are actively improving to achieve credible certification (with FSC as the certification scheme) at your request

TELEPHONE 01239 891379