Profile: Capitol Glass Northerm Windows provides vinyl windows. We also provide vinyl window wrap, glass & mirror, glass replacement, doors, railings and siding. Our commercial services include supply, fabrication, and installation which includes aluminum storefronts, doors, windows, curtainwalls, automatic doors & sliding doors, solariums, skylights, commercial glass & glazing installations. Our decorative cast glass includes shower doors, doorlites, back splashes, glass tops, partition walls, balustrades, landings, stair treads, signage, logos, waterfalls, entry doors, sidelites, elevator cab walls and lighting fixtures.