The size of an interior door’s rough opening is an important factor to consider when installing a door. The size of the rough opening determines the size of the door itself, as well as the type of hardware and trim needed to complete the installation. Understanding the proper measurements and specifications for interior door rough openings is essential for ensuring a successful installation.
Measuring a Rough Opening
When measuring a rough opening for an interior door, the most important factor to consider is the door width. It is important to measure the rough opening both horizontally and vertically to ensure that it is the same size as the door that will be installed. For example, a standard interior door is 32” wide and 80” tall, so the rough opening should be the same size. If the rough opening is not the correct size, the door may not fit properly and could potentially damage the door or the door frame.
Rough Opening Height
The height of an interior door rough opening is usually 80”, but can vary depending on the type of door being installed. For example, a pocket door would require a taller rough opening of around 96”. Additionally, it is important to consider the height of the trim when measuring the rough opening. Generally, the trim should be installed after the door is in place, so the trim height should be taken into account when measuring the rough opening.
Rough Opening Width
The width of a standard interior door rough opening is usually 32”, but can vary depending on the type of door being installed. For example, a French door would require a wider rough opening of around 48”. Additionally, it is important to consider the width of the trim when measuring the rough opening. Generally, the trim should be installed after the door is in place, so the trim width should be taken into account when measuring the rough opening.
Rough Opening Size Allowance
When measuring a rough opening for an interior door, it is important to allow for a small amount of extra space. This extra space, known as the rough opening size allowance, ensures that the door can be easily installed and can close properly. For a standard interior door, a rough opening size allowance of ¼” should be taken into account when measuring the rough opening.
Conclusion
Measuring the size of a rough opening for an interior door is an important step when installing a door. The size of the rough opening should be the same size as the door itself, with a small allowance for the trim and any additional hardware. Understanding proper measurements and specifications for interior door rough openings is essential for ensuring a successful installation.
