What Kansas City Does to a Door That Wasn’t Installed Right
The things most contractors won’t tell you, and what thirty years of installing doors actually looks like
By Joshua Harden | Acumen Renovations | General Contractors in Kansas City, KS
I have been personally installing doors since the 1990s. In that time I have pulled out more badly installed doors than I can count. And I mean every kind of wrong, no flashing, no shimming, brick mold just tacked to the wall and caulked, doors that never operated correctly the day they went in.
Here is what I have learned: I assume every door I pull out was installed wrong. I am right about nine out of ten times. The one in ten that was done correctly? Those go back to the 1980s, early 90s. Set with case nails through the brick mold, 16 penny nails through the jambs into the framing. No sill pan, no redundancy, but the carpenter understood the fastening and the shimming well enough that the door still works forty years later.
The other nine? Usually a combination of missing flashing, bad shimming, and zero attention to what Kansas City weather is going to do to that door over the next decade.
Let’s talk about what actually matters.
Sill Pan Flashing: Missing From Most New Homes Right Now
The sill pan goes under the door. It is a waterproof membrane that catches any water that gets past the threshold and directs it back outside before it can reach the subfloor. It is the most important piece of redundancy in a door installation.
It is also missing from most new construction being built today.
That is not a complaint about the old days. That is the current reality in new homes going up right now. When a door that faces the elements is installed without a sill pan, it is not a question of whether you will have subfloor damage. It is a question of how long it takes for that damage to show up and how far it will spread before someone catches it.
We have pulled doors where the damage stopped at the subfloor. We have also pulled doors where it went past the subfloor into the framing, degraded floor joists, deteriorated rim boards, structural damage that had been accumulating invisibly for years. That is what a missing sill pan produces when you give it enough time. The same principle of proper water management applies across your entire home exterior, which we break down in detail in Caulk Is Not Flashing: Why Proper Water Management Matters for Your Home.
When I pull a door and there is no sill pan, I know exactly what I am going to find. At that point the question is just how bad.
What 79 Freeze-Thaw Cycles a Year Does to a Door
The National Institute of Standards and Technology measured annual freeze-thaw cycles for cities across the country. Kansas City logs 79. For comparison, Chicago comes in lower. Denver comes in lower. Most major US cities come in lower.
But the number that matters is not the annual count. It is what happens during shoulder season. In Kansas City, there are stretches in January, March, and October where the temperature crosses 32 degrees more than once in a single day. Freeze in the morning, thaw by afternoon, refreeze overnight. Those daily crossings are where the real damage accumulates, not the deep winter cold, but the constant cycling back and forth across freezing.
Every material in a door and its frame expands and contracts with temperature. Wood moves. Steel moves. Vinyl moves. If the door was never properly shimmed, if the fasteners are not holding it square and plumb through that movement, it will shift. Not dramatically. Gradually, over seasons, until the reveal is off, the latch does not seat correctly, and eventually the door is letting air through gaps that were not there when it was installed.
This is not a theoretical problem in Kansas City. It is one of the most common things we see on a door that is five to ten years old.
Why Most Tradespeople Hate Installing Doors
I am a door whisperer. I say that seriously.
Most tradespeople hate installing doors because doors are unforgiving if you do not know the tricks, and you can make a door look right on installation day and have it fail within six months if you do not understand what is going to happen to it after you leave.
Here is what most people who install doors do not think about. Doors are manufactured by workers in factories. The tolerances are not perfect. Sometimes you have to install a door slightly out of plumb on the hinge side to get the reveal you need on the lock side. You have to know that gravity is going to factor in over the following months, which means you set the latch side slightly high, knowing where it is going to settle.
The latch has to seat through the strike plate. If the latch side drops and the strike plate does not move with it, you have a door that looks fine but does not lock correctly. A lot of installers do not think six months ahead when they set a door. They think about how it looks today.
Shimming is the other thing that separates a door installation from a door that lasts. When the wall is out of plumb, and walls are out of plumb all the time, especially in older Kansas City homes, you have to know where to shim and how much. Too little and the door shifts. Too much and you create a bind. It takes patience, a laser, and knowing the tricks. Most contractors who hate doing doors hate them because they do not have the patience and do not know the tricks.
A door installed without a laser in Kansas City is a door installed by someone guessing. We do not guess.
How to Tell If a Door With Side Lites Is Built Cheaply
There is a quick way to evaluate the quality of a door unit with side lites, the glass panels on either side of the door itself.
A cheap unit is assembled by bolting or screwing the side lites directly to the door jamb. The door and the side lites are manufactured separately and fastened together in the field or at the factory as an afterthought.
A quality unit has a continuous header and continuous sill that run across the entire assembly, door and side lites together, as a single integrated structure. The whole unit is built as one system, not pieced together.
When a unit has a continuous header and sill, it moves together through temperature cycles. It maintains its geometry. The side lites do not rack independently from the door. A unit that is just screwed together will show you the difference within a few years in Kansas City weather.
Ask before you buy. If the sales rep cannot tell you whether the unit has a continuous header and sill, that is an answer in itself.
The Honest Truth About French Doors and Sliders
Most contractors will not tell you this because they want the sale. We will tell you because we would rather you be happy in three years than regret the decision.
French doors do not perform as well against wind infiltration as a standard single door. That is not an opinion. It is the nature of how a two-panel hinged system seals at the meeting stile. In Kansas City, where wind is a factor almost every month of the year, a French door that was not bought and installed correctly will let air through the center seam in a way that a quality single door never will.
If you are committed to a French door, and they are beautiful when they are done right, buy a good one. Therma-Tru and Provia are constructed with better materials and tighter tolerances than anything you will find at a box store. Do not buy a box store French door and expect it to perform like a quality door. It will not. And do not let anyone who has not installed a significant number of French doors install yours. They are unforgiving if you do not know what you are doing.
For sliding patio doors, the roller system is everything. We specify stainless steel ball bearing rollers, Gerkin is our preferred go-to for sliding patio doors specifically for this reason. A slider with inferior rollers will feel fine for a year or two and then gradually become harder to operate until it is a daily frustration.
Lift-and-slide and accordion-style doors are the other end of the spectrum, premium products that require laser-precision installation or you will always be struggling with them. If a contractor did not have the time or skill to set it right the first time, you will not get them back to set it right the second time. Buy quality and have it installed by someone who has done it before.
What Our Credentials Actually Mean for Your Installation
As residential general contractors in Kansas City, our credentials are not marketing claims. They have practical consequences for the homeowner.
We are an authorized Therma-Tru Master Installer. We hold OSI Certified Installer credentials through Henkel Corporation. For a deeper look at how contractor certifications directly protect your investment and home warranties, see our post on Why Contractor Certifications Matter for Your Home Warranty.
When we install using the OSI QUAD Window and Door System, QUAD Max sealant, QUAD Foam, and Butyl Flash tape, installed according to ASTM C1193 and OSI’s installation guidelines, and the installation is registered within 60 days, Henkel provides a 15-year limited warranty covering protection against water and moisture intrusion between the door frame and the opening.
That warranty is only available when installed by an OSI-certified installer following their specific protocol. Most contractors cannot offer it. It exists because the installation system, not just the products, is what determines whether a door performs for fifteen years without a moisture problem.
We also carry OSI credentials for window installations, which is covered in our separate post on what to look for when buying windows in Kansas City.
One More Thing Most People Don’t Think About: Storm Doors
If you are adding a storm door, it needs to have proper venting. A storm door without ventilation traps heat between itself and the entry door on a summer day in Kansas City, and temperatures between the two doors can reach levels that will cook the finish right off your entry door. That damage is not covered by the entry door manufacturer’s warranty if it was caused by an unvented storm door.
Our preferred storm door is Gerkin. In our experience, they build the best storm door on the market for this climate.
And not all storm doors transfer from one door configuration to the next. If you are replacing your entry door, confirm before you order whether your existing storm door will work with the new configuration. We check this in the consultation. A lot of contractors find out on installation day.
Frequently Asked Questions
How do you know if your door was installed correctly? Start with the visible things. Is there Z-bar flashing visible above the top of the door frame? If not, the head flashing was likely omitted. Does the door operate smoothly without binding or sticking at any point in its travel? Does it latch and lock without lifting or forcing? If any of those are no, the installation has problems. The thing you cannot check visually is the sill pan flashing, it is under the door and not visible after installation. If your door faces the elements and has been in place for more than a few years without anyone confirming the sill pan was installed, assume it was not.
Does it matter what time of year you replace a door? Not significantly, if the installation is done correctly. A well-organized crew stages everything in advance so the opening is exposed for about ten to fifteen minutes. The only thing that changes the timeline is if we find subfloor damage when we pull the old door, which requires repair before the new door can be set, and we scope that before installation day, not during.
Should I replace all my locks when I get a new door? It is a good time to consider it. We can re-key an existing lock set to match the new door, but the bore pattern has to align. If it does not, the door or jamb needs to be mortised out to fit the existing hardware. In most cases, replacing the lock set at the same time as the door produces a cleaner result and ensures everything matches. If you have multiple exterior doors, having all the locks re-keyed to a single key at the same time is worth doing, and it is much easier while everything is already apart.
What is the difference between a quality door and a box store door in real terms? Pick up a 24-gauge steel door and a 26-gauge steel door and you will feel the difference immediately. The 24-gauge door typically takes two people to move. The 26-gauge door you can dent by looking at it wrong. Beyond the steel gauge, quality doors are foam-filled completely because the steel is thick enough to support itself without internal wood or composite fillers. Those fillers are not good insulators. A fully foam-filled door is significantly more energy efficient than a thinner door with internal fillers, even if the thinner door carries an equivalent energy rating on paper.
Are French doors a bad idea? Not a bad idea, but an honest one. They do not seal at the meeting stile as well as a single door, which matters in a windy climate. If you want one, buy Therma-Tru or Provia, brands that are built to the tolerances the configuration requires. Do not buy a box store French door and expect premium performance. And make sure whoever installs it has installed a significant number of them before.
A French door installed by someone without experience in that specific configuration is a door that will cause problems.
If you are planning a door replacement in the Kansas City area and want to talk through what the right approach looks like for your home, give us a call or visit our door replacement services page. As local general contractors near me for Kansas City homeowners, we have been doing this since the 1990s. We know where the problems hide.
Not sure where a door replacement fits within your broader list of home renovations? Our guide on What Home Exterior Projects Should You Prioritize, and Why? is a good place to start.
Acumen Renovations | Kansas City, KS | (785) 979-3636 | joshuaharden@acumenrenovations.com
Licensed Class A General Contractor, Johnson County #2026-0009638 Therma-Tru Authorized Master Installer | OSI Certified Installer | James Hardie Certified | Deckorators Certified | Fiberon Certified
Acumen Renovations is a residential home improvement and home renovation contractor serving Kansas City KS, Kansas City MO, and surrounding Johnson County communities.
