Common Subfloor Issues and Their Solutions

1. Uneven Surfaces – A subfloor that isn’t level can result in an uneven tile finish, making lippage more noticeable. Self-leveling compounds or screeds are used to create a perfectly smooth base.
   
2. Moisture Problems – Excess moisture can weaken tile adhesive and cause tiles to lift over time. Waterproofing measures, such as moisture barriers or decoupling membranes, can prevent this.
   
3. Weak or Unstable Subfloors – Wooden subfloors that flex under pressure can cause tiles to crack. Reinforcing the floor with cement boards or additional support ensures stability.
   
4. Contaminants on the Surface – Grease, paint, and old adhesive residues can interfere with tile adhesion. Proper cleaning and priming of the subfloor are essential steps before installation.
   

The Process of Subfloor Preparation

1. Inspection and Cleaning – The subfloor is assessed for cracks, movement, and moisture issues. Any debris, dust, or previous adhesives must be removed.
   
2. Leveling and Reinforcement – If needed, self-leveling compounds are applied, or cement boards are installed to create a strong, even surface.
   
3. Priming – Depending on the subfloor material, a primer may be used to improve adhesion and reduce dust absorption.
   
4. Applying Membranes (if required) – Decoupling or waterproofing membranes can be used to protect against movement or moisture, ensuring a long-lasting tile installation.
   

Why Professional Subfloor Preparation is Essential

Many tiling failures are caused by skipping or rushing subfloor preparation. Uneven surfaces lead to alignment problems, and moisture issues can cause long-term damage. DIY installations often overlook these crucial steps, resulting in costly repairs down the line.

At Coventry Tiling, every job starts with thorough subfloor preparation to ensure a flawless finish. Cutting corners in the early stages of a project leads to problems later, which is why experienced professionals take the time to do it right.

If you're planning a tiling project and want it done properly from the ground up, get in touch to discuss your requirements.