Standard or Extra Thick Wax Ring When Toilet Flange is Flush With or Slightly Above Floor Level?

When you install or replace a toilet, one of the most critical part is the wax ring as it ensures a proper seal between the toilet base and the sewer pipe. This seal prevents leaks, which can lead to water damage and unpleasant odors. In many cases, homeowners often make change to the floor when renovating a bathroom. I installed a new vinyl floor, therefore, the floor level becomes a bit higher. You might wonder whether to use a standard or extra thick wax ring, especially when your toilet flange is flush with or slightly above the floor level. Let’s break down the factors to consider when making your decision.

Understanding Wax Rings

Wax rings are made from soft, pliable wax that can form a tight seal around the base of the toilet. This seal keeps water and sewer gases from escaping into your bathroom. There are generally two types of wax rings: standard and extra thick. Standard Wax Rings are typically about 3/4 inch thick and are suitable for most toilet installations. Extra Thick Wax Rings are about 1 1/2 inches thick and are designed for situations when additional height is needed to ensure a proper seal.

Evaluating Your Toilet Flange Position

The position of your toilet flange relative to the floor is a crucial factor in deciding which type of wax ring to use:

1. Flange Flush with the Floor:
   • Standard Wax Ring: If your flange is perfectly flush with the floor, a standard wax ring is generally sufficient. It will create an effective seal without the risk of over-compression, which can happen with a thicker ring.
   • Extra Thick Wax Ring: Using an extra thick wax ring when the flange is flush may result in too much wax being compressed, which can cause the wax to squeeze out and potentially compromise the seal. However, in some cases, where the flooring material is slightly uneven, an extra thick wax ring might offer better coverage and protection.
2. Flange Slightly Above the Floor:
   • Standard Wax Ring: When the flange is slightly above the floor (up to 1/4 inch), a standard wax ring is often still suitable. The wax can compress enough to form a good seal without being overly thick.
   • Extra Thick Wax Ring: While an extra thick ring may seem unnecessary for a flange that’s slightly above the floor, it can still be used if you prefer an extra margin of safety. However, be mindful that too much compression can make it difficult to secure the toilet tightly to the floor, leading to potential rocking or instability.

Conclusion

For a toilet flange that is flush with or slightly above the floor level, a standard wax ring is usually the best choice. It provides enough compression to create a secure seal without the risk of over-compression that can occur with an extra thick ring.