Porcelain Paving Near Me
- Compaction: The foundation must be a non-negotiable minimum of 150mm of compacted **MOT Type 1 sub-base** for pedestrian patios. The key here is the compaction itself. I demand proof of using a mechanical wacker plate to achieve a **95% compaction rate**. Anything less, and you'll see subsidence and slab movement within the first three winters.
- Adhesion: This is the most common failure point I encounter. Porcelain is non-porous. It requires a **full mortar bed** (never "dot and dab") for support. Critically, the back of every single slab must be coated with a **slurry primer** (an SBR bonding agent) immediately before being laid. This creates a chemical bond between the non-porous tile and the mortar. Skipping this step guarantees delamination.
- Spacing: Joints are not just for aesthetics; they allow for thermal expansion. I specify a consistent 3-5mm joint, filled with a flexible, **porcelain-specific brush-in grout**. Using standard cement-based grout will lead to cracking and water ingress, which in turn leads to frost damage.
- Tolerance: I work with high-quality, **rectified porcelain tiles**, which have perfectly straight edges. Even with these, there's a standard for flatness. An acceptable level of lippage (the height difference between two adjacent tiles) is less than 1mm. A good installer uses a leveling system to achieve this.
- Ask directly: "What is your standard depth for the **MOT Type 1 sub-base**, and what machinery do you use for compaction?"
- Follow up with: "Do you lay on a **full mortar bed**, and can you confirm you apply a **slurry primer** to the back of every tile?" If they hesitate or say it's not needed, end the conversation.
- Inquire about materials: "What specific brand and type of **brush-in grout** do you use for porcelain, and what joint width do you recommend?"
- Discuss finishing standards: "What is your process for ensuring minimal **lippage** between tiles, and do you use a tile leveling system?"
- Finally, ask about water management: "What **fall gradient** do you build into the patio to ensure proper water runoff?"