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Steel and fiberglass entry door samples side by side

Buying Guide

Steel vs Fiberglass Entry Doors

Both are great choices for Ontario homes. The right one depends on your budget, your exposure to weather, and how much you care about the finished look.

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Side-by-Side

The honest steel vs fiberglass comparison

We install both every week. Here's how they actually perform — and where each one wins.

Best for Security + budget

Steel Doors

Heavy-duty slab, top-tier security, lowest price per door.

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Best for Insulation + curb appeal

Fiberglass Doors

Premium insulation, won't warp or rust, paintable or stainable.

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FeatureSteel DoorsFiberglass Doors
Typical installed price$1,800 – $3,200$2,800 – $5,500
R-value (insulation)
Polyurethane-cored slabs in both
R-12 to R-15R-16 to R-20
Security (slab strength)
Won't dent
Won't warp
Won't rust
Stainable wood-look finish
Paint finish options
Typical lifespan20–30 years30–50 years
MaintenanceRepaint every 5–10 yrsRepaint every 10–15 yrs
Lifetime product warranty (Trust Build)

Our Verdict

If front-door security and the lowest installed price are your priorities, go steel. If you want maximum insulation, the lowest long-term maintenance, and a finish that can look like real wood, go fiberglass. For most Ontario front doors that face weather and the street, we recommend fiberglass — for back, garage and side entries, steel is usually the smarter spend.

FAQ

Frequently Asked Questions

Steel doors are typically 25–40% less expensive than comparable fiberglass doors. The price gap narrows on premium steel models with stainable wood-look skins.
Steel — the slab itself is harder to breach. That said, security on any door is dominated by the deadbolt grade, strike plate and frame reinforcement, not just the slab material.
Fiberglass. The composite skin doesn't conduct cold the way a steel skin does, so fiberglass doors usually deliver a slightly higher R-value at the same core thickness.
Modern steel doors are galvanized and primed before painting. They don't rust like an old steel door if the paint is maintained — but a deep scratch left exposed can corrode.
Fiberglass — it won't dent, rust or warp, and the skin holds up to decades of sun and weather. Steel can last just as long if it's not dented or scratched through to bare metal.

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Frames, sashes, hardware and our workmanship — covered for as long as you own the home.

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Still not sure? Let us help you choose.

Your free on-site project assessment includes both steel and fiberglass options with side-by-side pricing.

  • Detailed project assessment
  • Written itemized quotation
  • Product and installation recommendations
  • Financing options available
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