Ultimate Millwork

Interior doors · Buying guide

Door Buying Guide

Door by Trustile

Replacing worn doors, remodeling, or giving a room a fresh look? This guide walks you through the six decisions that matter: door type, size, swing, style, finish and core. Choose a door that fits your opening and complements your décor.

Door by Trustile

01 · Door type

Pre-hung or slab?

There are two ways to buy a door. Choose based on whether you are replacing the whole unit or just the door itself.
Pre Hung

Pre-hung door

Ready to install
The door comes already mounted in its frame, with hinges attached. It is ready to install in a prepared doorway.
Slab

Slab door

Door only
Just the door: no frame, hinges or handle set. Slabs come unfinished (stain or paint required) or finished and ready to hang.

02 · Sizes & measuring

Measure before you order

Door openings and dimensions matter. If you are replacing an existing door with a pre-hung unit, choose one with the same dimensions as the door you have now.
Door Measuring Guide
Standard widths
24"28"30"32"36"Custom sizes
Heights
80"84"96"Custom cut

Measuring for a slab door

Door only
Measure the width, height and thickness of the door.

Measuring for a pre-hung door

Door + frame
Measure the slab’s width and height, the rough opening (the space between the studs with no door installed) and the thickness of the jamb.

03 · Door handing

Which way does it swing?

Door swing determines where your hinges and hardware go. Stand on the outside of the door (the entrance side). If the hinges are on the left, it is a left-hand door; if they are on the right, it is a right-hand door.
INSIDE OUTSIDE · YOU

Left hand

Opens inward
INSIDE OUTSIDE · YOU

Left hand reverse

Opens outward
INSIDE OUTSIDE · YOU

Right hand

Opens inward
INSIDE OUTSIDE · YOU

Right hand reverse

Opens outward

04 · Door styles

Find the right style

A well-designed door is a simple way to add style to your home. Here are the options we offer.
Barn Door

Barn doors

Room dividers
Barn doors separate rooms while adding artisan character. Some glide along an upper rail; others use a bottom track to keep the door from swinging. Styles range from rustic to polished, prefinished or unfinished, and we offer a kit that converts most doors into a barn door.
Pocket Door

Pocket doors

Saves floor space
A pocket door slides along its length and disappears into a compartment in the wall. Use it for architectural effect or where there is no room for a swinging door. Most run on rollers from an overhead track; single or double doors suit different opening widths.
BiFold Door

Bifold doors

Closets & laundry rooms
Hinged panels fold out to the side in pairs. Bifolds don’t swing, so they take up less space than a hinged door, and louvered versions improve air circulation. A great fit for closets, laundry and utility rooms, or as a room divider.
Bypass Door

Bypass doors

Closets
Two or more panels slide past each other on parallel overhead tracks, so you open one side at a time. Most common on closets; the panels overlap slightly so there is no visible gap.
French Door

French doors

Brings in natural light
Large glass divided into smaller panes, also called grids or divided lites. More than an entry or exit, a French door is an elegant way to fill your home with natural light.
Swinging Door

Swinging doors

Most common
A hinged door that swings into or out of a room. This is the most standard interior door application.

05 · Finishes

Choose a finish

The right finish depends on how much time and budget you want to put into the project.

Primed

Ready to paint
Sealed with a coating that helps paint or stain adhere. A great choice if you want to paint the door yourself, in any color you like.

Stained

Natural wood look
Enhances the natural wood grain with an even color tone. Shades range from light honey maple to dark espresso or black.

Prefinished

Least work
Factory-finished using techniques a step above what is possible at home, with door and hinge holes pre-cut. It just needs installing.

Unfinished

Blank slate
Pre-sanded but not stained or painted, so you can finish it exactly how you want. Takes more work than a prefinished door.

06 · Core type

Hollow core or solid core?

Hollow core

Light & affordable
Lightweight, inexpensive and easy to install, which makes them a popular choice for bedrooms, bathrooms and closets. They offer little sound blocking or fire resistance.

Solid core

Quieter & sturdier
Sturdier and heavier, with better soundproofing and insulation. You get the look, feel and durability of solid wood without the cost, plus good fire resistance.

Tip

Trimming a hollow core door

Hollow core doors aren’t truly hollow: inside is a foam or cardboard core. Trim from the bottom, and no more than 1-1/2 inches. Measure and mark the cut, score along a straight edge with a utility knife, clamp a straight-edge guide to the door, and cover the score line with masking tape all the way around to prevent chipping. Then cut with a power saw.

Hollow vs Solid

Not sure which door is right?

See and handle real doors at our Elk Grove Village showroom, or send us your plans and we’ll help you choose the right type, size and style for every opening.

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