Does Your Toilet Flange Need To Be Flush With The Floor? Here’s The Answer!
What To Know
- When installing a toilet, one of the crucial components is the toilet flange, a metal or plastic ring that secures the toilet to the floor.
- The top flange of a cast iron flange has a beveled edge that allows the toilet to sit flush against the floor.
- If the old flange is flush with the floor, you will need to install a cast iron flange or a plastic flange with a flush adapter.
When installing a toilet, one of the crucial components is the toilet flange, a metal or plastic ring that secures the toilet to the floor. A common question that arises during this process is whether the toilet flange needs to be flush with the floor. This blog post delves into the intricacies of toilet flange installation, exploring the significance of flushness and providing comprehensive guidance to ensure a secure and leak-free toilet.
Understanding the Toilet Flange
The toilet flange is a circular ring that is embedded in the subfloor and protrudes slightly above the finished floor level. It provides a stable base for the toilet and prevents it from wobbling or leaking. The flange consists of a top flange, which the toilet bolts into, and a bottom flange, which is secured to the subfloor.
Does Toilet Flange Have to be Flush with Floor?
The answer to this question depends on the type of toilet flange being used.
Cast Iron Flange
Cast iron flanges are typically used in older homes and are designed to be flush with the floor. The top flange of a cast iron flange has a beveled edge that allows the toilet to sit flush against the floor.
Plastic Flange
Plastic flanges, on the other hand, are typically installed above the finished floor level. They have a built-in spacer that raises the flange approximately 1/4 to 1/2 inch above the floor. This is done to prevent the toilet from rocking or wobbling due to unevenness in the subfloor.
Determining the Correct Flange Height
If you are replacing a toilet, it is important to determine the height of the existing flange before installing a new one.
- Flush Flange: If the old flange is flush with the floor, you will need to install a cast iron flange or a plastic flange with a flush adapter.
- Raised Flange: If the old flange is raised above the floor, you can install a plastic flange with a built-in spacer.
Installing a Toilet Flange
Installing a toilet flange requires careful preparation and attention to detail.
1. Remove the Old Flange: If replacing an old flange, remove it by unscrewing the bolts and lifting it out.
2. Clean the Subfloor: Clean the subfloor around the flange location to remove any debris or old wax.
3. Apply Wax Ring: Apply a wax ring to the bottom of the flange, ensuring that it covers the entire surface area.
4. Secure the Flange: Place the flange on the subfloor and secure it with screws or bolts.
5. Check Flushness: Use a level to ensure that the flange is level and flush with the floor (for cast iron flanges) or raised above the floor (for plastic flanges).
Troubleshooting Common Issues
- Toilet Rocks or Wobbles: If the toilet rocks or wobbles, it may indicate that the flange is not secure or that the subfloor is uneven.
- Toilet Leaks: Leaks around the base of the toilet can be caused by an improperly installed flange or a damaged wax ring.
- Toilet Not Flushing Properly: If the toilet is not flushing properly, it may be due to a clogged flange.
Advanced Considerations
In certain situations, you may need to use a special type of toilet flange.
- Offset Flange: Offset flanges are used when the toilet drain pipe is not directly below the center of the toilet.
- Low Profile Flange: Low profile flanges are used in situations where there is limited space between the subfloor and the finished floor level.
The Bottom Line: Ensuring a Secure and Leak-Free Toilet
Understanding whether a toilet flange should be flush with the floor is crucial for a successful toilet installation. By carefully following the guidelines outlined in this blog post, you can ensure that your toilet is securely fastened, leak-free, and operates flawlessly for years to come.
Frequently Asked Questions
Q: Can I use a plastic flange on a cast iron drain pipe?
A: Yes, you can use a plastic flange with a cast iron drain pipe by using a cast iron to plastic adapter.
Q: How do I know if my toilet flange is damaged?
A: Signs of a damaged toilet flange include leaks around the base of the toilet, rocking or wobbling of the toilet, or difficulty flushing the toilet.
Q: What is the best way to clean a toilet flange?
A: Use a wire brush or a pipe cleaner to remove any debris or buildup from the flange surface.
