9 Interior Door Installation Questions to Expect From the Pros

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A wooden interior door
Photo: John Keeble / Moment / Getty Images
A wooden interior door
Photo: John Keeble / Moment / Getty Images
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When interior doors grow old, loose, or broken, it’s time to think about a replacement. Or maybe there’s a wall that needs a new door for easier access to a room. It’s time to call up a local door installation pro and talk about a new inside door. Here are the top door installation questions you can expect them to ask when you start talking.

1. When do you need a new interior door?

Setting a schedule is one of the most important parts of arranging for a new interior door, and the pros will ask earlier, usually before or during the quote process, when you need the new door installed. It’s best to find out upfront if a contract can meet your schedule needs or if you need to find someone who can get to the job sooner.

Installing an interior door isn’t usually a large project, but contractors may still be booked out for days or weeks, depending on the time of year. Be ready to discuss a completion date and work that into any estimate or contract you sign.

2. What’s the interior door location and size?

The pros are likely to ask basic questions about where the door is and how large it is. For example, is it a standard master bedroom door? Is it a sliding door leading to a half bathroom? Is it a larger door opening to a pantry or laundry room? And, of course—which way do you want the door to swing? That will give them important cues about how complicated the job will be. Expect pros to measure existing doors or spaces during an estimate.

3. What kind of floor clearance does the door need?

Pros may also want to talk about the type of floor around the door and clearance, especially if the previous door was very low. This problem is more common in older houses, where doors may scrape against wood flooring or jam on the carpet when they are placed too low. Contractors may want to know if they can lift the door to give it extra clearance.

4. Are you replacing an interior door or adding a new one?

Replacing an existing door is a much simpler project, which can usually be completed in just a few hours. However, contractors will want more details if you are adding a door to an existing space. For example, owners may want a door in a wall to provide easier access between a kitchen and a dining room.

Adding a new door to a wall is a much larger project that may take a couple of days to complete. It may also involve wiring or possibly plumbing work, which the contractor will also want to know about.

5. Do you want a pre-hung or slab door?

A pre-hung door is a door that ships complete with hinges and a frame all in one package. Pre-hung doors are very easy to install and won’t take much time at all, and they allow you to change the appearance of the frame, too.

A slab door refers to only replacing the door itself while leaving the old frame and hinges in place. It’s more affordable but a bit more complicated to install and needs to match the old frame precisely. Slab door installations are very common when an existing frame is still in good shape.

6. Are you purchasing the replacement door yourself?

Contractors will also want to know if you will be buying the door through them or buying it yourself and only arranging for installation. If you don’t buy the door through the contractor, none of their warranties will apply to the door itself.

7. Are you installing one door or multiple doors?

The pros will want to know if this is a single-door job or if you want to replace all your inside doors at the same time. The more doors you’re installing, the greater the labor costs and timeline will be.

8. What style of interior door do you want?

Inside door designs can include many options like solid wood, glass pane, and sliding. Those designs can come in different styles, too, like barn doors, shaker, louvered, frosted, Dutch, and more. Your contractor will discuss the style that you want and how much it will cost. They may also ask if you want the door painted or not.

9. What kind of handle lock do you want on the door?

Contractors will also want to discuss the type of handle or lever you want on the door and what kind of lock you prefer the door to have. Custom or high-end door hardware will add to the cost of your project.

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