What size rough opening (RO) do you need for 24″, 28″, 30″, 32″, 34″ & 36 inch door depends on several factors like grade and species of wood, door opening width & height, building code and construction requirements.
If you want to make interior, exterior, barn, bifold & pocket door for your house, there is a lots of questions comes in mind what is correct rough opening for door and how to install door framing. There is few points you should know before framing.
Getting the rough opening size right the first time, will save you from tension, when installing your doors. Framing rough opening sizes are really quite simple. Just add 2 inch to the width and add 2-1/2″ to the height of the actual width and height of door respectively.
Rough openings as the size of the opening before the finished lumber has been added to the jambs. Before you add your framing, the rough opening should be larger than the door size you’ve chosen. Rough opening should be 2″ wider than the door width measured between the left and right edges. So, in a 36 inches wide door, the rough opening will be 38 inches wide.
The distance between the floor and the rough header should be two and a half inches (2-1/2″) taller than your new door’s height. For example, in a standard 80 inches-tall door, the header should be 82-1/2″ above the finished floor.
The standard door or opening width and height can vary by where you live, but is usually it is a 36 inch wide by an 80 inch tall (36″×80″), or a 30 inch wide by an 80 tall (30″×80″), or a 34 inch wide by an 80 tall (34″×80″), or a 32 inch wide by an 80 tall (32″×80″), or a 28 inch wide by an 80 tall (28″×80″). Door may be interior, exterior, barn, bifold & pocket door.
A sliding barn door is a door that can be installed anywhere in a house, usually featuring some sort of a wood or metal door that is hung on a sliding track. Instead of opening and closing like a traditional door, it slides to the side and hangs neatly against the wall.
A pocket door is a sliding door that, when fully open, disappears into a compartment in the adjacent wall. Pocket doors are used for architectural effect, or when there is no room for the swing of a hinged door. They can travel on rollers suspended from an overhead track or tracks or guides along the floor.
A folding door is a type of door which opens by folding back in sections or so-called panels. Folding doors are also known as ‘bi-fold doors’, in spite of them most often having more than two panels.
We refer to rough openings as the size of the opening before the finished lumber has been added to the jambs. After finishing work it will be equal as door opening. Ordering a door based on a rough opening size can leave you with a door that is too big.
Frame the rough opening to 2 inches wider than the door you have selected. If you are installing a 30″ wide door, the rough opening will be 32″ wide. Once finished, the door or opening will be 30″ wide. The finished opening should be the same width and height as the door you have purchased.
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Standard door rough opening
Standard door rough opening should be 2″ wider than the door width measured between the left and right edges and two and a half inches (2-1/2″) taller than your new door’s height.
What is door rough opening?
The door rough opening (RO) is size of the opening of door before the finished lumber has been added to the jambs. Rough opening should be 2″ wider than the door width measured between the left and right edges and two and a half inches (2-1/2″) taller than your new door’s height.
Rough opening for 24″, 28″, 30″, 32″, 34″ & 36 inch door
The standard rough opening size required for a 24-inch door need to be a 26-inch wide, while the rough opening required for a 28-inch door need to be a 30-inch wide. Moreover, the rough opening required for a 30-inch door need to be a 32-inch wide, while the rough opening size for a 32-inch door need to be a 34-inch wide. In addition, the rough opening required for a 34-inch door need to be a 36-inch wide, while the rough opening size for a 36-inch door need to be a 38-inch wide.
If you have a bedroom door that is 32″ wide (which is considered a 2/8 or 2′-8″ door) just add 2″ to the width and frame it 34″ wide. The height is 80″ (which is considered 6/8 or 6′-8″) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
Rough opening for a 24 inch door
A framing rough opening for a 24″ door, you will need rough opening to 2 inches wider & 2-1/2″ taller than the actual door size, so, if you are installing a 24″ wide and 80″ tall or 24″×80″ interior, or barn & pocket bedroom door, the rough opening will be 26″ wide and 82-1/2″ tall or 26″× 82-1/2″.
A standard rough opening for a 24-inch (24×80 inches) door is typically 26 inches in width and 82 1/2 inches in height. This provides some extra space for framing and ensures the door can be installed properly.
Rough opening for a 28 inch door
A framing rough opening for a 28″ door, you will need rough opening to 2 inches wider & 2-1/2″ taller than the actual door size. So, if you are installing a 28″ wide and 80″ tall or 28″×80″ interior, or exterior, barn, bifold & pocket bedroom door, the rough opening will be 30″ wide and 82-1/2″ tall or 30″× 82-1/2″. Thus, there is 30″ wide rough opening will be required for a 28 inch door.
A standard rough opening for a 28-inch (28×80 inches) door is typically 30 inches in width and 82 1/2 inches in height. This provides some extra space for framing and ensures the door can be installed properly.
Rough opening for a 30 inch door
A framing rough opening for a 30″ door, you will need rough opening to 2 inches wider & 2-1/2″ taller than the actual door size, so, if you are installing a 30″ wide and 80″ tall or 30″×80″ interior, or exterior, bedroom door, the rough opening will be 32″ wide and 82-1/2″ tall or 32″× 82-1/2″. Thus, there is 32″ wide rough opening will be required for a 30 inch door.
A standard rough opening for a 30-inch (30×80) door is typically 32 inches in width and 82 1/2 inches in height. This provides some extra space for framing and ensures the door can be installed properly.
Rough opening for a 32 inch door
A framing rough opening for a 32″ door, you will need rough opening to 2 inches wider & 2-1/2″ taller than the actual door size, so, if you are installing a 32″ wide and 80″ tall or 32″×80″ interior, or exterior, bedroom door, the rough opening will be 34″ wide and 82-1/2″ tall or 34″× 82-1/2″. Thus, there is 34″ wide rough opening will be required for a 32 inch door.
A standard rough opening for a 32-inch (32×80) door is typically 34 inches in width and 82 1/2 inches in height. This provides some extra space for framing and ensures the door can be installed properly.
Rough opening for a 34 inch door
A framing rough opening for a 34″ door, you will need rough opening to 2 inches wider & 2-1/2″ taller than the actual door size, so, if you are installing a 34″ wide and 80″ tall or 34″×80″ interior, or exterior, barn, bifold & pocket bedroom door, the rough opening will be 36″ wide and 82-1/2″ tall or 36″× 82-1/2″. Thus, there is 36″ wide rough opening will be required for a 34 inch door.
A standard rough opening for a 34-inch (34×80) door is typically 36 inches in width and 82 1/2 inches in height. This provides some extra space for framing and ensures the door can be installed properly.
Rough opening for a 36 inch door
A framing rough opening for a 36″ door, you will need rough opening to 2 inches wider & 2-1/2″ taller than the actual door size, so, if you are installing a 36″ wide and 80″ tall or 36″×80″ interior, or exterior, barn, bifold & pocket bedroom door, the rough opening will be 38″ wide and 82-1/2″ tall or 38″× 82-1/2″. Thus, there is 38″ wide rough opening will be required for a 36 inch door.
A standard rough opening for a 36-inch (36×80) door is typically 38 inches in width and 82 1/2 inches in height. This provides some extra space for framing and ensures the door can be installed properly.
What is the rough opening for a 30 by 80 inch door
The rough opening for a 30×80 inch or 30 by 80 inch door need to be 32″×82-1/2″ (a 32 inch wide and a 82-1/2 inch tall). If you have a bedroom door that is 30 inch wide (which is considered a 2′-6″ or 2/6 door) just add 2″ to the width and frame it 32 inch wide. The height is 80 inch (which is considered 6′-8″ or 6/8) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
The rough opening for a standard 30 by 80 inch door is typically about 32 inches in width and 82 1/2 inches in height (or 32 by 82 1/2 inches). This provides some extra space for the door frame and allows for adjustments during installation.
What is the rough opening for a 24 by 80 inch door
Rough opening for a 24″×80″ or 24 by 80 inch door should be 26″ × 82-1/2″ (26 inch wide and 82-1/2 inch tall). If you have a bedroom door that is 24 inch wide (which is considered a 2′-0″ or 2/0 door) just add 2″ to the width and frame it 26 inch wide. The height is 80 inch (which is considered 6′-8″ or 6/8) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
The rough opening for a standard 24 by 80 inch door is typically about 26 inches in width and 82 1/2 inches in height (or 26 by 82 1/2 inches). This provides some extra space for the door frame and allows for adjustments during installation.
What is the rough opening for a 28 by 80 inch door
Rough opening for a 28″×80″ or 28 by 80 inch door should be 30″ × 82-1/2″ (30 inch wide and 82-1/2 inch tall). If you have a bedroom door that is 28 inch wide (which is considered a 2′-4″ or 2/4 door) just add 2″ to the width and frame it 30 inch wide. The height is 80 inch (which is considered 6′-8″ or 6/8) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
The rough opening for a standard 28 by 80 inch door is typically about 30 inches in width and 82 1/2 inches in height (or 30 by 82 1/2 inches). This provides some extra space for the door frame and allows for adjustments during installation.
What is the rough opening for a 32 by 80 inch door
Rough opening for a 32″×80″ or 32 by 80 inch door should be 34″ × 82-1/2″ (34 inch wide and 82-1/2 inch tall). If you have a bedroom door that is 32 inch wide (which is considered a 2′-8″ or 2/8 door) just add 2″ to the width and frame it 34 inch wide. The height is 80 inch (which is considered 6′-8″ or 6/8) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
The rough opening for a standard 32 by 80 inch door is typically about 34 inches in width and 82 1/2 inches in height (or 34 by 82 1/2 inches). This provides some extra space for the door frame and allows for adjustments during installation.
What is the rough opening for a 34 by 80 inch door
Rough opening for a 34″×80″ or 34 by 80 inch door should be 36″ × 82-1/2″ (36 inch wide and 82-1/2 inch tall). If you have a bedroom door that is 34 inch wide (which is considered a 2′-10″ or 2/10 door) just add 2″ to the width and frame it 36 inch wide. The height is 80 inch (which is considered 6′-8″ or 6/8) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
The rough opening for a standard 34 by 80 inch door is typically about 36 inches in width and 82 1/2 inches in height (or 36 by 82 1/2 inches). This provides some extra space for the door frame and allows for adjustments during installation.
What is the rough opening for a 36 by 80 inch door
Rough opening for a 36″×80″ or 36 by 80 inch door should be 38″ × 82-1/2″ (38 inch wide and 82-1/2 inch tall). If you have a bedroom door that is 36 inch wide (which is considered a 3′-0″ or 3/0 door) just add 2″ to the width and frame it 38 inch wide. The height is 80 inch (which is considered 6′-8″ or 6/8) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
The rough opening for a standard 34 by 80 inch door is typically about 36 inches in width and 82 1/2 inches in height (or 36 by 82 1/2 inches). This provides some extra space for the door frame and allows for adjustments during installation.
Conclusion:-
The ro for a 36-inch door need to be 38 inches wide, while the ro for a 34-inch door need to be 36 inches wide. Moreover, the ro for a 32-inch door need to be 34 inches wide, while the ro for a 30-inch door need to be 32 inches wide. In addition, the ro for a 28-inch door need to be 30 inches wide, while the ro for a 24-inch door need to be 26 inches wide.