The Big Mistakes Homeowners Make When Buying and Installing a Front Entrance Door

Because getting it right involves precision sizing, weatherproofing, and real structural carpentry, most people hire a full-service supply-and-install company. But even when you hire the pros, things can go sideways quickly. Between pushy sales tactics, poor material choices, and subtle installation shortcuts, here is what you actually need to watch out for from start to finish.

1. In the Showroom and Quote Phase

The problems often start before anyone picks up a hammer.

The "Sign Today Only" Discount:

If a sales rep tells you a huge discount expires the second they walk out your door, show them the door. Solid, reputable installers will guarantee their quote for at least 30 days, so you have time to compare options.

Not Knowing Who Is Actually Doing the Work:

Many retail companies don’t employ their own installers; they subcontract the job to the lowest-bidding independent crew. If the door starts leaking air six months down the road, the retailer blames the installer, and the installer blames the product. Always ask upfront: Are your installers in-house employees/contractors, fully insured, and covered by WSIB / provincial safety boards?

The Single-Line Quote:

If your quote just says "Replace front entry door - $X,XXX.00" you're walking into change-order cost territory. Make sure the written contract spells out the cost of repairing rotten subfloors or rough framing, the exact interior trim being used, details on custom exterior aluminium capping, and old door disposal fees.

2. Choosing the Right Door for Canadian Weather

A door can look stunning in a climate-controlled showroom, but fail miserably once it meets real-world weather.

Solid Wood in Full Exposure:

Unless you have a deep, covered porch, placing a natural wood door on an unprotected south or west-facing entrance is asking for trouble. The harsh sun combined with our freeze-thaw cycles will warp, crack, and strip the finish in no time.

Basic Steel Doors with No Thermal Break:

Entry-level steel doors conduct freezing temperatures right into your foyer. In deep winter, you’ll end up with heavy condensation, frost buildup, and cold drafts. Go with fibreglass, or make sure any steel door you buy includes a dedicated thermal break.

Just Swapping the "Slab" in an Old Frame:

It’s tempting to cut costs by buying just the door slab and hanging it into your existing wood frame. But if that old frame is out of plumb or rotting at the bottom corners, a new slab won't seal properly. Investing in a complete pre-hung system with a fresh composite jamb and threshold is almost always worth the money.

3. Overlooking Cold-Climate Ratings and Rebate Labels

Never buy an entrance door just because the brochure says it’s "energy-efficient." In Canadian winters, you need to check the actual NFRC or NRCan label for the U-factor (how much heat escapes) and the Energy Rating (ER). If you’re banking on provincial or federal energy-efficiency rebates, your door must hit strict minimum thresholds for our climate zone. Buying an uncertified door, or one with decorative glass that drops the overall rating, means leaving free rebate money on the table and watching your heating bills climb.

4. Underestimating Custom Build Lead Times

Don't wait until October to replace a drafty front entrance door. While off-the-shelf basic steel slabs sit in stock at big-box stores, a high-performance, factory-finished fibreglass door with custom sidelites, decorative glass, or multi-point hardware typically carries an 8 to 16-week build time. Homeowners who assume a custom door can be installed in a couple of weeks often find themselves facing winter freeze-up before the factory even ships the unit. Plan your project months ahead of the deep freeze.

5. Glass, Colours, and Placement

Dark Paint Behind a Storm Door:

If you put a black or dark navy door behind a full-glass storm door, direct sunlight turns the gap between them into an oven. Temperatures can soar past 80°C, which will bubble your paint, melt the weatherstripping, and immediately void your warranty.

Single Deadbolts Next to Sidelites:

If you have large glass inserts or wide sidelites right beside a basic deadbolt, a burglar only needs to break the glass, reach inside, and turn the thumbturn. Use laminated security glass or a multi-point lock system whenever glass sits within arm's reach of the hardware.

6. Ignoring Wall Thickness and Jamb Depth

A door frame isn’t one-size-fits-all. Older homes built with 2"x4" framing typically require a 4 9/16" jamb, while modern 2"x6" construction demands a 6 9/16" depth. If your estimator doesn’t accurately measure your wall’s total thickness including exterior sheathing, brick veneer, or siding transitions, the crew will have to put together awkward jamb extensions and custom exterior brickmould. That leaves you with clunky interior trim and potential weak spots in your exterior water seal.

7. Hardware You Shouldn't Skimp On

Your door's longevity and security come down to the mechanical hardware holding it all together.

Skipping Multi-Point Locks:

A standard lock only grabs the frame in the middle. With seasonal humidity swings, tall or composite doors tend to bow slightly at the top and bottom corners, breaking the seal. A multi-point lock grabs at three distinct points, pulling the entire slab tight against the weatherstripping.

Builder-Grade Locks on High-End Doors:

Don't put cheap ANSI Grade 3 hardware on a premium exterior door. Insist on Grade 1 or Grade 2 locksets to protect against kick-ins.

Smart Locks That Struggle in the Cold:

Motorised smart deadbolts require millimetre-perfect alignment. If the door has to be pushed hard to latch against thick weatherstripping, that tiny motor will jam, strain, and burn through standard alkaline batteries during cold snaps. Make sure the latch alignment is flawless and use cold-rated lithium batteries.

Lightweight Hinges on Heavy Doors:

A heavy insulated fibreglass or steel door, especially with glass, will eventually sag on basic hinges. You need heavy-duty ball-bearing hinges with non-removable pins, secured with at least one 3-inch screw per hinge driven straight into the home’s structural framing.

8. On-Site Installation Shortcuts

Even the most expensive custom door will fail if the crew cuts corners during installation.

No Sub-Sill Pan Flashing:

A door should never be set straight onto raw subfloor framing. Installers must lay down a rigid sill pan with a rear back-dam so any moisture that slips under the threshold is safely drained outside over the brick or siding.

Using the Wrong Expanding Foam:

Standard, high-expansion spray foam expands with enough force to bow a door jamb inward, causing the door to bind. The crew must use low-expansion, closed-cell polyurethane foam made specifically for doors and windows.

Rushing Past Level and Plumb:

If the frame isn't perfectly square and plumb, the weatherstripping won't make even contact. A quick telltale sign: if you open the door halfway (to a 45-degree angle) and let go, it shouldn't drift open or swing shut on its own.

9. Warranties and Signing Off

Manufacturer vs. Workmanship Warranties:

That 20/25-year warranty from the manufacturer covers factory flaws like delaminating fibreglass or seal failure in the glass. It does not cover water leaks or drafts caused by poor installation. Ask for a separate, written labour warranty from the installer.

The Maintenance Fine Print:

If you get real wood or certain stained woodgrain finishes, check the fine print. Many warranties require you to document applying a fresh UV clear coat every 2 to 3 years to keep the finish coverage valid.

10. Don't Hand Over Final Payment Too Quickly:

Before you sign off and pay the remaining balance on install day, do a quick checklist:

• Check the perimeter for any daylight slipping through.
• Close a strip of paper in the door; it should resist when pulled, proving tight weatherstripping compression.
• Step on the threshold to ensure there's zero flex or hollow bounce underneath.
• Turn the deadbolt; it should open smoothly without you having to yank or lean on the door.