Fiberglass vs Composite Doors: What Homeowners & Experts Are Saying

Choosing the right door can be confusing. You want something that looks good, lasts long, and keeps your home secure. Two of the most popular options today are fiberglass and composite doors.

Both claim to be strong, energy-efficient, and low-maintenance. And, if you browse online, you’ll find lots of debate on these two types of doors

But which one is better for your home? What do real homeowners think? And what do experts recommend?

Let’s see.

What Are Fiberglass and Composite Doors?

Fiberglass Doors

Fiberglass doors are made from a tough outer shell of fiberglass. Inside, they have a foam core for insulation. Some are made to look like real wood, with grain textures and color options.

These doors don’t crack, swell, or rot easily. They work well in hot, cold, or humid weather. Most people choose them for their clean look and low upkeep.

Composite Doors

Composite doors are built using several materials. These often include wood fibers, PVC, and foam insulation. Some people call fiberglass doors “composite” because they’re also made from mixed materials.

But true composite doors usually have a thicker structure. They’re designed to be extra strong and weather-resistant. They are heavy, solid, and often a bit more expensive.

Both types are great for long-term use. But their materials and build make them slightly different.

What Homeowners Are Saying

One of our clients mentioned that fiberglass doors are a great option for anyone who wants a door that looks like wood but without the hassle. They love that the fiberglass door is low-maintenance and doesn’t warp or rot like wooden doors. It also stands up well against extreme weather, which is why they recommend it for coastal homes.

Another homeowner shared that they chose fiberglass because it offers excellent insulation. The foam core inside the door helps keep their home warm during winters and cool during summers. Plus, the door hasn’t shown any signs of wear after years of use.

However, a few clients have mentioned that cheaper fiberglass doors sometimes don’t perform as well. They found that low-end models tend to have weaker frames and seals, which can lead to air leaks and less durability. 

On the other hand, composite doors have also received praise. One homeowner found composite doors to be ideal for their house; particularly because of their sturdy construction. They noticed that these doors don’t sag or shift over time. 

Another client mentioned they appreciated the door’s solid feel and superior security. Composite doors are often heavier and thicker. That makes them feel more secure than lighter fiberglass options.

While composite doors are a bit more expensive, many feel the extra cost is worth it. Especially for those looking for extra strength and long-term performance.

Overall, homeowners who prioritize durability, insulation, and low maintenance tend to favor fiberglass. But those looking for added strength and a more premium feel often lean towards composite doors.

Expert Comparison: Fiberglass vs Composite

At Delco Windows and Doors, we help Toronto homeowners choose doors that last. We’ve worked with both fiberglass and composite doors for years. Here’s what we’ve seen again and again.

Durability

Fiberglass doors are built to last. They don’t crack, dent, or rust. They handle Toronto’s cold winters and hot summers without a problem. We’ve installed fiberglass doors that still look new after ten years, even in Toronto's climate.

Composite doors are also very strong. They’re made from a mix of materials, and they feel heavier. Some homeowners prefer a solid feel; so, we recommend composite doors. Composite doors are less likely to twist or bend, even in harsh weather.

Maintenance

Both doors are low-maintenance. You won’t need to paint, sand, or stain them often. Just clean them with soap and water once in a while. Fiberglass does well in direct sunlight. Composite doors can fade a bit if they’re exposed to too much UV light over time.

Energy Efficiency

Both fiberglass and composite doors have a foam core inside. This keeps your home warmer in winter and cooler in summer. We’ve seen homeowners save money on heating bills after switching. When the door is installed properly with a tight frame, it makes a big difference in comfort and cost.

Style and Finish

Fiberglass gives you more style options. It can be smooth or have a wood grain finish. Some look just like real wood. You can paint or stain them to match your home.

Composite doors also come in nice finishes, but they’re usually more modern in design. They’re less textured than fiberglass but still look clean and sharp. If you want something bold and solid, composite works well.

Cost

Fiberglass is more affordable. It gives you good value for the price. Composite costs more because it’s heavier and reinforced. It’s a good investment if you want a door that feels extra secure and durable.

Security

Both doors can be very secure. But the lock and frame matter more than the slab itself. At Delco, we always install doors with strong frames and high-quality hardware. That’s what really keeps your home safe.

When to Choose Which?

Both fiberglass and composite doors are solid choices. But they serve different needs. Here’s how we help homeowners in Toronto decide what’s best for them.

Choose Fiberglass if:

• You want a door that looks like wood but needs less care
• You prefer a wide range of colors and finishes
• You’re working with a smaller budget
• You want good insulation and lower energy bills
• You live in a home that gets direct sunlight

Choose Composite if:

• You want a door that feels heavy and solid
• You care more about strength than looks
• Your area has harsh weather or high humidity
• You want something that holds its shape for many years
• You are okay spending a bit more for added strength