[Read more about The Spruce’s ‘Vinyl vs. Fiberglass windows & doors: Which One Is Best?’ here]
Taken from the article:
Physically, fiberglass windows & doors tend to be superior to vinyl windows & doors. If you are interested in remodeling for the long run or in resale values, fiberglass windows & doors are the clear choice.
However, vinyl windows & doors’ lower cost make them a close contender. Since new construction vinyl windows & doors are readily available in-stock in major home improvement stores, they can be DIY-installed, saving on labor costs.
Main Points You Should Know
- Strength: Fiberglass is stronger than vinyl, with fewer chances of warping.
- Paintability: Fiberglass framed windows & doors can be painted, unlike vinyl.
- Eco-Friendliness: Fiberglass windows & doors are considered greener than vinyl because fiberglass windows & doors are about 60% glass, and glass can be recycled.
- Wood-Look: Fiberglass can mimic the look of wood windows & doors more than vinyl windows & doors can.
- Resale: Considered more upscale than vinyl windows & doors–better resale value.
- Cost: Vinyl will always be cheaper than fiberglass, at least in the foreseeable future. Expect to pay 15%-30% more for fiberglass than for vinyl.
For vinyl windows & doors, extruded polyvinyl chloride (PVC) is the base material. Inner structural elements that stiffen the framing may include metal.
For fiberglass windows & doors, polyester resins are activated by a catalyst and then pultruded, or pulled, through a heated die.
Strands of glass or glass mats are impregnated into resins. The finished product is called a lineal and it’s machinable and can be shaped. Fiberglass has long been used to create ultra-strong, lightweight materials for skis, surfboards, and canoes.