Not all front doors are created equal. Whether you’re designing a modern build or upgrading a tired entryway, choosing between fiberglass, wood and steel isn’t just about looks – it’s about balancing durability, energy efficiency and long-term value.
Fiberglass doors are engineered to withstand Canada’s weather conditions. Unlike wood, they resist warping, cracking and rotting caused by moisture and temperature fluctuations. Steel doors, while sturdy, can dent and are prone to rust over time. Fiberglass offers a balance of durability and low maintenance, making it ideal for regions with harsh winters and humid summers.
Here’s how the top three exterior door materials stack up.
Wood vs Fiberglass vs Steel Doors Comparison Chart
| Feature | Fiberglass | Wood | Steel |
|---|---|---|---|
| Durability | Excellent | Moderate (with maintenance) | Excellent |
| Energy Efficiency | High | Moderate | Moderate to High |
| Maintenance | Low | High | Moderate |
| Aesthetics | Very good (realistic wood grain) | Excellent (natural look) | Fair to good (basic finishes) |
| Cost | $800–$3,000 | $2,000–$5,000+ | $400–$1,200 |
| Security | High | High | Very high |
Energy Efficiency Comparison
Energy efficiency varies widely depending on the construction quality of the door, but generally, fiberglass doors offer the best thermal performance. Though both fiberglass and steel are typically built with a high-density polyurethane foam core that reduces heat transfer and boosts R-values, helping to keep interior temperatures stable and utility costs down, fiberglass has an edge in resisting temperature-related expansion and contraction, which helps maintain a consistent seal over time.
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Insulated steel doors also perform well but may transfer some heat or cold through the metal skin if thermal breaks aren’t well designed. Wood doors, while solid and heavy, are less efficient overall. They’re more prone to warping and swelling in humidity or cold, which can affect the seal and create air gaps. Additionally, wood’s porous nature means it doesn’t insulate as effectively as foam-filled doors.
For projects prioritizing energy codes, green certifications, or lower HVAC loads, fiberglass is typically the best bet. Steel is a strong, budget-friendly second, but be sure to choose an insulated model. Wood is best used in controlled environments or where aesthetics justify a tradeoff in thermal performance.
PRO BUYING TIP
Assess insulation needs – Look for doors with high R-values to ensure optimal energy efficiency.
Aesthetics
Though wood has traditionally been the first choice when customization and premium aesthetics matter, fiberglass doors have been catching up fast. They come in a variety of styles, finishes and colours, allowing homeowners to choose designs that complement their home’s architecture. They can mimic the appearance of real wood, offering the aesthetic appeal without the associated maintenance. More options are becoming available for steel doors but they don’t have the same look or versatility that fiberglass has.
Maintenance
One of the significant advantages of fiberglass doors is their low maintenance. They don’t require regular painting or staining like wood doors. Cleaning is straightforward—usually just a wipe-down with mild soap and water. Fiberglass is particularly well-regarded for its resistance to warping, cracking, denting, and moisture – making it ideal for a variety of climates and exposure conditions. It holds its finish well and requires only occasional cleaning or refinishing.
Steel doors also require very little maintenance but are more susceptible to scratches and dents, which can lead to rust over time if not properly sealed or painted.
PRO BUYING TIP
Consider door orientation – For doors exposed to direct sunlight, choose finishes that resist fading.
Security
Security is a top priority for any exterior door. Steel doors are generally considered the most robust option as they offer strong resistance to forced entry, impact and fire. Fiberglass doors also offer excellent security, especially in premium models that include reinforced cores and multi-point locking systems. They’re less prone to denting than steel and less vulnerable to rot or weakening over time compared to wood. Wood doors offer a solid, heavy barrier, but their long-term performance depends on maintenance. If not properly sealed, wood can crack or soften, making it more vulnerable to break-ins or environmental damage.
Fiberglass vs Steel vs Wood Doors
The Advantages and Disadvantages of Each
Fiberglass Doors: The All-Around Performer
Advantages of fiberglass doors
Highly durable – Resistant to dents, scratches and warping from moisture
Low maintenance – Unlike wood, fiberglass doesn’t require regular staining or sealing
Energy efficient – Insulated cores help maintain indoor temperatures and reduce energy costs.
Aesthetic versatility – Available in various styles and finishes to suit different home designs – can convincingly mimic wood grain for a high-end look without the upkeep.
Disadvantages of fiberglass doors
Cost – Mid- to high-range in price – more than steel but less than premium wood.
Less authentic – Even with wood-like finishes, some homeowners still prefer the real thing.
BEST FOR: Homeowners looking for a balance of appearance, performance, and longevity, especially in variable climates.
Wood Doors: Classic Beauty, Higher Upkeep
Advantages of wood doors
Aesthetic appeal – Natural wood offers unmatched beauty and a luxurious, traditional feel.
Customization – Easily carved, shaped or stained for a custom look.
Solid and secure – Heavy and dense, providing a strong physical presence.
Disadvantages of wood doors
Maintenance-heavy – Needs regular sealing or painting to protect from moisture, rot and UV rays.
Cost – Usually the most expensive option, especially with exotic woods.
Vulnerable to elements – Can warp, swell or crack with weather exposure if not properly maintained.
BEST FOR: Upscale homes or heritage restorations where appearance is key and ongoing maintenance is acceptable.
Steel Doors: Security and Value
Advantages of steel doors
Strong and secure – Excellent for preventing forced entry
Affordability – Typically the most cost-effective option upfront
Energy efficient – Like fiberglass, most are insulated with foam cores
Disadvantages of steel doors
Dents and scratches – More prone to cosmetic damage that’s harder to repair.
Limited aesthetics – Less visually appealing than wood or high-end fiberglass; fewer high-end finishes available.
Corrosion risk – Can rust if the paint or coating is damaged and not maintained.
BEST FOR: Budget-conscious buyers who prioritize security and utility over design.
Fiberglass doors offer a compelling combination of durability, energy efficiency, aesthetic flexibility and low maintenance, making them a particularly good choice for Canadian homeowners who require thermally efficient doors due to the cold temperatures. By selecting a fiberglass door, you’re investing in a product that enhances your home’s curb appeal while providing long-term performance and security.
Read more on this topic in Telltale Signs That Your Front Door Needs to Be Replaced
