Get matched with top door pros in Battlefield, MO

Fire doors are more expensive than your run-of-the-mill residential composite door because of additional materials and expanding sealants that help the door slow down or even prevent the spread of temperatures over 1,000 degrees. If you have homeowners insurance, talk to your company and see if installing fire doors can lower your premiums, especially if you can install steel doors.

While not strictly required, it is highly recommended to shim both sides of a door. Shimming both sides allows you to make minor adjustments for wall framing that isn't perfectly plumb, ensuring the door is level and hangs evenly. This practice helps the door swing open and close smoothly, reduces the chances of the frame warping, and can be used to center the door within the wall opening. If you are working alone, you may find it easier to remove the door slab to lighten the weight while supporting the frame and inserting the shims. With two people, the process is generally faster and easier, whether the slab is left in place or not.

Most modern door knobs will all fit in standard, modern doors, so if you know your door was made in the last 50 years or so, you should be fine buying a standard replacement door knob. The only exception would be a thumb latch handleset for an exterior door, as this type of door knob may not fit your door without drilling a mounting hole for the bottom of the handle. Antique or custom doors might also have different sizes and knob mounting holes, so call in a professional if you don’t believe your door is a standard one.

A door frame is typically 2 to 2.5 inches wider than the door. This additional space accommodates the door jamb and hinges and allows for necessary installation adjustments. For example, if the door is 30 inches wide, the rough opening should be 32 to 32.5 inches wide to ensure a proper fit and smooth operation.