We were happy with Mark and Vision Double Glazing’s service from start to finish. Their product recommendations for each room were spot on (yes, replacing our black window frames with white really did make the rooms look larger and freshened up their whole look). He had all the windows installed, trimmed and finished well within the time specified and his clean-up left the house tidier than when he showed up.  We’re definitely recommending Vision Double Glazing to everyone and are looking forward to having more windows replaced. Innallo, WA