Installations & Renovations. We also do glass sealed unit installations! Since 1993, quality, good honest workmanship, and fair pricing has our priority as we strive to give you the best on windows, doors, and installations. We here at Northcoast doors and windows are proud to be a certified Milgard dealer and installer. When choosing your windows and doors, whether it be wood or vinyl, in Courtenay through us or wherever you are Milgard is clearly the best.