- Harris Slate & Stone
- 01267 233824 - Alltycnap Road, Johnstown, Carmarthen, Dyfed, SA31 3QY
- 7.3 miles from Merthyr
- A Lewis
- 0845 3736639 - 36 Llwyn Meredith, Carmarthen, Dyfed, SA31 1EF
- 7.3 miles from Merthyr
- G.J Davies
- 01559 371246 - Deganwy Trebedw, Henllan, Llandysul, Dyfed, SA44 5TN
- 13.2 miles from Merthyr
- Hayday Construction & Roofing
- 01545 580543 - Blaen Cwm, Llandysul, Ceredigion, SA44 4XJ
- 13.2 miles from Merthyr
- Flat Roof
- 0845 3736639 - Gwelfryn Cwmsychpant, Cwmsychpant, Llanybydder, Dyfed, SA40 9XJ
- 18.1 miles from Merthyr