This highlights the challenges of fitting plumbing pipes and fittings within the limited space of a 2x4 wall and the advantages of using a 2x6 wall instead.
Challenges of Fitting Plumbing in 2x4 Walls
The standard width for wall studs in the United States is 2x4, which refers to a nominal measurement of 2 inches by 4 inches. However, the actual width of a 2x4 stud is slightly less than 3.5 inches. This video explains that fitting common plumbing pipes and fittings within a 2x4 wall can be problematic for the following reasons:
Pipe and Fitting Size: The video mentions a toilet vent and cleanout, which typically requires a 3.5-inch pipe. Adding the fitting that goes over the pipe can easily push the total width beyond the available space in a 2x4 wall.
Drywall Installation: If the plumbing pipes and fittings protrude beyond the wall surface, it can create problems during drywall installation. Drywall panels are typically flat and cannot easily accommodate protruding objects.
Advantages of Using 2x6 Walls for Bathrooms
Accommodates Plumbing Pipes and Fittings: A 2x6 wall provides 3.5 inches of stud width, which is enough space to accommodate most common plumbing pipes and fittings, including the toilet vent and cleanout mentioned in the video.
Provides More Space for Multiple Pipes: Bathrooms typically have multiple pipes running through the walls, including supply lines for hot and cold water, drain pipes, and vent pipes. A 2x6 wall provides more space for these pipes to be installed without interfering with each other or creating installation problems.
Easier Drywall Installation: With more space available within the wall cavity, plumbers can install the pipes and fittings without them protruding into the space needed for drywall installation. This allows for a smooth and even drywall surface.
When to Use 2x6 Walls in Bathrooms
The video suggests that using a 2x6 wall in a bathroom is a good idea in the following situations:
If a larger cleanout is needed, like for the toilet: A cleanout is an access point that allows plumbers to clear clogs or make repairs to the plumbing system. Installing a cleanout typically requires additional space behind the wall.
If multiple pipes are running through the walls: Bathrooms typically have multiple pipes for various purposes. If your bathroom renovation involves running several pipes through the walls, a 2x6 wall can provide the extra space needed for a smooth installation.
By using 2x6 walls in bathrooms, builders can ensure that the plumbing system is installed correctly and that there is enough space for future maintenance or repairs.
This can help to prevent problems down the road and avoid the need for costly repairs to walls or plumbing systems.
In conclusion, while 2x4 walls are the standard for most residential construction, using 2x6 walls in bathrooms with plumbing offers several advantages. The additional space allows plumbers to install pipes and fittings more easily and ensures there is enough room for drywall installation without any complications. If you are planning a bathroom renovation that involves a cleanout for the toilet or multiple pipes running through the walls, consider opting for 2x6 wall construction for a smoother and more efficient building process.
