Types Of Windows
In the Bay Area the most popular types of windows include fiberglass windows, wood windows, vinyl windows, aluminum windows, and hybrid windows which are also known as composite windows. As of 2025 San Francisco has significantly eased requirements related to the materials most homeowners can use. The new rules prohibit the Planning Department from imposing restrictions on materials used in replacement window frames and sashes, unless the home is a “historic” home. Non-historic homes now have the flexibility to choose any type of window material for over-the-counter permit approval.
Another common misunderstanding is related to color restrictions. In San Francisco the Planning Department does not regulate window color, not even for historic buildings. This misconception sometimes arises from the rule that in a window-painting project any masonry must be left unpainted. For example, a brick window sill can not be painted but the window frame can be painted.
Window Materials
Fiberglass Windows
Fiberglass windows material is made by mixing glass fibers and resin. Fiberglass material expands and contracts less when temperatures change. Fiberglass windows are extremely strong, require low maintenance, and are known for their durability especially in the Bay Area.
Wood Windows
Wood windows have always been popular because they look amazing, however they are less durable and require more maintenance than vinyl and fiberglass. For this reason not only do we only offer high-quality 100% wood windows but we also offer wood-clad windows which look like wood from the inside but the frame is made from a more durable material.
Vinyl Windows
Vinyl windows are popular because they are low-maintenance and resistance to warping, cracking, and fading. Vinyl windows cost less than other alternatives while giving improvements in energy efficiency and curb appeal. Vinyl is available in many colors and styles, offering a budget-friendly option for replacement windows.
Aluminum Windows
Aluminum is a strong but lightweight metal that resists warping, swelling, and cracking. Aluminum doesn’t rot and doesn’t become brittle in extreme temperatures. The strength of aluminum is the biggest benefit, allowing aluminum windows to perform well 30 years later, even in tough climates.
Composite Windows / Hybrid Windows
Composite windows are engineered to combine the best qualities of vinyl (low-maintenance), wood (beauty), and aluminum (strength and durability) so it’s no wonder composite windows continue to grow in popularity. Here is a list of composite windows we carry.
