In general, it is not recommended to install peel and stick tiles directly over existing cracked tiles. Cracked tiles can indicate underlying issues with the subfloor or adhesive, and adding new tiles on top without addressing the underlying problem may result in a subpar and unstable installation. It's important to properly prepare the surface before installing any type of flooring to ensure a durable and long-lasting result.
Here are a few reasons why adding peel and stick tiles over cracked tiles is not advisable:
Uneven Surface: Cracked tiles create an uneven surface, and this can affect the adhesion and stability of the new peel and stick tiles. The cracks may telegraph through the new tiles or cause them to crack as well.
Adhesion Issues: Peel and stick tiles require a clean, smooth, and solid surface for proper adhesion. Cracks in the existing tiles can compromise the ability of the adhesive to bond effectively to the subfloor, leading to tiles that may not adhere properly or may come loose over time.
Height and Alignment Differences: When you add new tiles over existing cracked tiles, the height of the new tiles will be higher than the surrounding floor. This height difference can cause tripping hazards and make it difficult to align the new tiles with the existing flooring in adjacent areas.
Concealing Underlying Issues: By covering up cracked tiles without addressing the underlying issues, you may be hiding potential problems such as water damage or structural issues. It's important to investigate and resolve any underlying issues before proceeding with new flooring installation.
To ensure a successful installation, it is recommended to remove the existing cracked tiles and assess the condition of the subfloor. If the subfloor is in good condition, you can then proceed with the installation of the peel and stick tiles following the manufacturer's instructions and proper surface preparation techniques.
If you're uncertain about the best course of action or if you're dealing with complex flooring issues, it's advisable to consult with a professional contractor or a flooring specialist who can assess your specific situation and provide appropriate guidance.