| Spar Plas | 01656 721053 | | Unit 13 Parc-Y-Bont, Millers Avenue, Brynmenyn Industrial Estate, Brynmenyn, Bridgend, CF32 9TD |  Map & Directions |
| J T Plastics | 029 2049 0600 | | Unit 9, Dumballs Road, Cardiff, CF10 5FE | | Map & Directions |
| Manor Windows & Conservatories | 029 2085 2338 | | Colliery Road, Llanbradach, Caerphilly, CF83 3QQ | | Map & Directions |
| Treharne Double Glazing | 01443 841267 | | 22 Parc Y Nant, Nantgarw, Cardiff, CF15 7TJ | | Map & Directions |
| Ultra Glass | 01443 441132 | | Unit 10, Ely Industrial Estate, Williamstown, Tonypandy, CF40 1RA | | Map & Directions |
| Crusader Home Improvements | 01443 206205 | | 12 Camperly Close, Beddau, Pontypridd, CF38 2LF | | Map & Directions |
| Capital Upvc Ltd | 029 2047 2700 | | Unit 1, East Moors Road, Templar Park, Ocean Way, Cardiff, CF24 5EW | | Map & Directions |
| Garths Windows | 01443 218016 | | Unit 22, Newtown Industrial Estate , Llantwit Fardre, Pontypridd, CF38 2EE | | Map & Directions |
| Signature Windows Ltd | 0845 345 2939 | | Academi House, 15 Castle Close, Creigiau, Cardiff, CF15 9NJ | | Map & Directions |
| Thomas & Wright Windows | 029 2075 5103 | | Rear Of The Ty Glas, Ty Glas Avenue, Llanishen, Cardiff, CF14 5DX | | Map & Directions |
| Hi Tech Outlooks Ltd | 029 2063 4868 | | 7 Milford Close, Tonteg, Pontypridd, CF38 1HG | | Map & Directions |
| Stacey Windows | 029 2046 0139 | | Stacey Workshops, Stacey Road, Cardiff, CF24 1DW | | Map & Directions |
| Dunraven Windows | 01656 743572 | | St. Davids House, Village Farm Industrial Estate, Heol Mostyn, Pyle, Bridgend, CF33 6BJ | | Map & Directions |
| R S Windows & Double Glazing Co | 01656 768785 | | Coychurch Road , Bridgend, CF31 2AP | | Map & Directions |
| Suburban Windows | 029 2056 5300 | | Unit 1n, Ely Bridge Industrial Estate, Wroughton Place, Ely, Cardiff, CF5 4AB | | Map & Directions |
| A P T Windows | 01443 812004 | | Rear Of Library, High Street , Ystrad Mynach, Hengoed, CF82 7BB | | Map & Directions |
| Kestrel Upvc Ltd | 029 2088 3520 | | Unit 3 Van Industrial Park, Van Road, Caerphilly, CF83 3EL | | Map & Directions |
| Stormy Windows Ltd | 0800 037 3950 | | 1 Village Farm Industrial Estate, Heol Mostyn, Pyle, Bridgend, CF33 6BJ | | Map & Directions |
| Secura Windows Ltd | 029 2023 3155 | | 60 Cowbridge Road East, Cardiff, CF11 9DU | | Map & Directions |
| Merlin Conservatories & Windows | 01443 843979 | | Unit 4 Taff Business Centre, Tonteg Road, Treforest Industrial Estate, Pontypridd, CF37 5UA | | Map & Directions |
| P & J Badman | 029 2074 7178 | | 5 Rambler Close , Thornhill, Cardiff, CF14 9FH | | Map & Directions |
| Euroframe Upvc Ltd | 01443 406050 | | Unit 5 Maritime Workshops, Maritime Industrial Estate, Pontypridd, CF37 1NY | | Map & Directions |
| Golley Slater Group Ltd | 0870 871 1234 | | Wharton Place, 13 Wharton Street, Cardiff, CF10 1GS | | Map & Directions |
| Welsh Windows | 01443 673870 | | 40 Winslade Avenue, Tonyrefail, Porth, CF39 8NP | | Map & Directions |
| Phoenix Windows Ltd | 01685 811448 | | Hirwaun Road, Hirwaun, Aberdare, CF44 9HR | | Map & Directions |
| Everseal | 029 2039 6555 | | Unit 4 Hadfield Court, Hadfield Road, Cardiff, CF11 8AQ | | Map & Directions |
| D G Window Services Ltd | 01446 420287 | | Unit 19, Arcade Workshops, Atlantic Trading Estate , Barry, CF63 3RF | | Map & Directions |
| Dinas Windows Ltd | 01446 420262 | | Unit 16, Cardiff Road, Ty Verlon Industrial Estate, Barry, CF63 2BE | | Map & Directions |
| Cardiff Glass Ltd | 029 2023 3133 | | Unit 7, Curran Road, Cardiff, CF10 5DF | | Map & Directions |
| Robert Spence | 029 2086 6784 | | 14 Monmouth Court, Caerphilly, CF83 2TG | | Map & Directions |
| Mr Windows Ltd | 029 2059 7070 | | Unit 5/6, Argyle Way, Ely Distribution Centre, Cardiff, CF5 5NJ | | Map & Directions |
| Jeff Roberts | 01656 871013 | | 63 Alexandra Road, Pontycymer, Bridgend, CF32 8HB | | Map & Directions |
| Maple Windows & Doors | 01656 657747 | | 27 Maple Drive, Brackla, Bridgend, CF31 2PF | | Map & Directions |
| Excelsior Windows Ltd | 029 2071 2300 | | Baron Lane, Penarth, CF64 3UA | | Map & Directions |
| Masterglaze | 029 2048 9900 | | Unit 102, Portmanmoor Road Industrial Estate, Cardiff, CF24 5HB | | Map & Directions |
| P J Grace | 01443 687930 | | Flat 1, 121 Aberrhondda Road, Porth, CF39 0BA | | Map & Directions |
| Barry Double Glazing | 01446 735600 | | 3-4 Church Road, Barry, CF63 1JY | | Map & Directions |
| Upvc Problems | 029 2079 5606 | | Flat 11 Downton Grange, New Road, Rumney, Cardiff, CF3 3BW | | Map & Directions |
| Ace Glazed Products Ltd | 029 2023 1771 | | 11 Stadium Close, Cardiff, CF11 8TS | | Map & Directions |
| Elite Window Services | 01443 491007 | | 78 Pritchard Street , Tonyrefail, Porth, CF39 8PA | | Map & Directions |
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