Most homeowners start their door search the wrong way.
They fall in love with a door online, order it, and then discover it doesn’t fit their frame, swings the wrong way, or isn’t built to handle their climate. That’s an expensive lesson.
The decision process matters as much as the door itself. Here’s how to think through it in the right order.
Start With What You Actually Have
Before you look at a single door style, go measure your existing opening.
Standard entry doors are 80 inches tall and either 32 or 36 inches wide. But older homes often aren’t standard. If your opening is a non-standard size, you’re looking at either a custom order, which adds time and cost, or some framing work.
Also, look at the condition of your current frame. If the wood is soft, rotted, or warped, replacing just the door slab won’t fix your problem. You’ll need a prehung door (which comes with its own frame) rather than a slab door. Many people skip this step and end up with a beautiful new door that leaks air and rattles in the wind because the old frame was never addressed.
Decide How the Door Needs to Open
This sounds obvious. It isn’t.
You need to figure out three things: which side the hinges sit on, whether the door swings in or out, and which direction it opens relative to your entry space.
Stand outside facing your door. If the hinges are on the right, it’s a right-handed door. If they’re on the left, it’s left-handed. Most doors are inswing (open toward the interior), but outswing doors actually offer better break-in resistance since the hinges aren’t exposed.
Get this wrong, and you’ll be returning a door that’s perfectly fine, just backwards.
Then Pick Your Material (With Your Climate in Mind)
The three standard options are wood, steel, and fiberglass. You’ve probably read comparisons. Here’s the practical version:
Wood looks stunning but needs real upkeep. It can swell, warp, and crack with moisture and temperature changes. If you’re in a high-humidity area or an environment with dramatic seasonal swings, wood requires commitment.
Steel is affordable and strong. It’s dent-prone and can rust if the finish is compromised, but for security at a reasonable price point, it’s hard to beat.
Fiberglass is the workhorse. It holds up in harsh weather, resists dents and rust, requires minimal maintenance, and can be finished to mimic wood grain convincingly. For most homeowners, it’s the practical winner.
One thing the comparison guides usually leave out: UV exposure matters too. At higher elevations, like Denver, UV intensity is significantly stronger than at sea level. Paints and stains on wood doors can fade and peel faster than manufacturers’ standard estimates. This is worth asking your supplier about directly, especially if you’re planning entry door installation in Denver or the surrounding Front Range.
Think About the Full System, Not Just the Door
A door doesn’t perform alone. The frame, weatherstripping, threshold, and glass all work together.
If you’re buying a prehung door, that system comes pre-assembled. If you’re buying a slab, you’re responsible for making sure everything integrates correctly. That’s not a dealbreaker, but it means whoever installs it needs to be precise.
On energy efficiency: look for doors with a low U-factor (heat transfer) and a good ENERGY STAR rating. A well-sealed door makes a real difference in your heating bill. The weatherstripping material matters too; silicone and rubber outperform foam over time.
If you’re adding glass panels, sidelites, or a transom, those decisions affect both the look and the insulation value. Decorative glass is beautiful. But make sure any glass in the door is insulated (double or triple-pane) if energy performance is a priority for you.
Know Your Lead Time Before You Commit
Stock doors from a big-box store can be available the same week. Custom doors, specific sizes, finishes, and glass configurations, can take four to eight weeks or longer.
If you have a hard deadline (a sale closing, a contractor already scheduled), nail down that lead time before you order. This is one of the most common causes of project delays, and it’s completely avoidable.
Match the Door to Your Home’s Architecture
A craftsman door on a mid-century modern house looks like a mistake. A sleek, flush-panel door on a traditional colonial can look just as wrong.
You don’t need a design degree to get this right. Just look at your home’s dominant lines and shapes. Does it have detailed trim and decorative elements? A door with some visual texture and panel detail fits. Clean, minimal exterior? A simpler door with modern hardware works better.
Color is where a lot of homeowners play it too safe. Your front door is one of the few places where a bold color actually improves the overall look. Black, navy, deep red, forest green, all of these tend to look more intentional and polished than a door that blends into the siding.
The Bottom Line
Choosing the right entry door is really a sequence: measure and assess your opening first, sort out the swing direction, pick a material that suits your climate and budget, and think about the full door system before you commit to anything.
Do all of this before installation day, and the install itself goes smoothly. Skip any of it, and you’re troubleshooting problems that could have been avoided with 30 minutes of prep.
If you’re in the Denver area and want help working through these decisions, The Install Company can walk you through the selection process and make sure what you choose actually fits, before anything gets ordered.