- Penrhyn Slate Crafts
- 01766 770525 - Berthen Eirin, Penrhyndeudraeth, Gwynedd, LL48 6NP
- 1.9 miles from Porthmadog
- Gwyn Rowlands
- 01766 780206 - Dol Aur, Harlech, Wales, LL46 2SS
- 4.5 miles from Porthmadog
- Snowdonia Slate And Stone
- 01766 832525 - Bryn Myfyr Cwm Bowydd Rd, Blaenau Ffestiniog, Gwynedd, LL41 3ED
- 9.5 miles from Porthmadog
- Stormflex
- 0870 8147739 - Glynafon Tanygrisiau, Tanygrisiau, Blaenau Ffestiniog, Gwynedd, LL41 3RS
- 9.5 miles from Porthmadog
- Owens Roofing
- 01758 720784 - Edern, Pwllheli, Gwynedd, LL53 6JD
- 20.8 miles from Porthmadog
