Ranked by real customer reviews — updated 2026
Huws Glass
Pwllheli
Porthmadog Window And Door Medic
Tremadog
C S & G Ltd
Pwllheli
Hughes Glass & Glazing Ltd
Bangor
Altra Glass
Caernarfon
Thomas & Jones (Glaziers) Ltd
Caernarfon
Peninsula Home Improvements
Gaerwen
Ffenestri Dwyfor Windows
Garndolbenmaen
Clifton Glass Co Ltd
W
Snowdonia Windows & Doors (Gwynedd) Ltd
Caernarfon
Menai Windows Ltd
Star
R Williams & Co LTD
Pwllheli
Menai Window Manufacturers Ltd
Bangor
Ffenestri Cymru Windows
Star
Windowtec Home Improvements
Star
Seiont Windows
Llanrug
Window Medic Ynys Môn Ltd
Menai Bridge
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