When substances have deeply penetrated the grout’s pores, it becomes more challenging to remove the stain completely. In such cases, while the cleaning process may lighten the stain, it often remains visible to some extent. This is especially true for cement-based grout, which is more porous and absorbent.
Permanent Stains: When All Else Fails
In some instances, stains can become permanent and change the color of grout. This typically occurs when the staining substance has deeply penetrated and chemically reacted with the grout over a prolonged period. For example, if mold or mildew has been left untreated for too long, it can cause the grout to permanently change its color.
Preventing Stains and Maintaining Grout Color
While some stains can be permanent, there are ways to prevent them and maintain the color of grout:
- Sealing: Applying a high-quality grout sealer can help reduce the porosity of grout and make it more resistant to stains. Regular reapplication is necessary for continued protection.
- Prompt Cleaning: Quickly cleaning up spills and stains helps prevent them from seeping into the grout. Regular maintenance and proper cleaning methods can also preserve the grout color.
- Using Proper Cleaning Agents: Avoid using harsh chemicals and acidic cleaners, as they can damage the grout and potentially cause discoloration. Instead, opt for pH-neutral or mild cleaning agents specifically designed for grout.
While stains on grout can become permanent under certain circumstances, prompt action and regular maintenance can prevent most stains and preserve the color of grout. By using proper cleaning methods, employing preventative measures like sealing, and being mindful of the substances that come in contact with grout, homeowners can maintain the original look of their grout for years to come.