What is the difference between rectified and non-rectified tile for installation?

Rectified tiles have machine-cut edges that are perfectly straight and uniform, while non-rectified tiles have slightly irregular edges from the natural firing process. This difference significantly impacts both the installation process and final appearance.

Rectified tiles are precision-cut after firing using diamond blades or grinding wheels, creating edges that are exactly 90 degrees and perfectly straight. This allows them to be installed with minimal grout lines (as narrow as 1/16" to 1/8"), creating a nearly seamless appearance that's especially popular with large format tiles and modern designs. The consistent sizing also makes installation more predictable for contractors.

Non-rectified tiles retain their natural fired edges, which can vary slightly in size and have subtle curves or irregularities. These tiles require wider grout lines (typically 1/8" to 1/4" minimum) to accommodate the size variations and edge irregularities. While this creates a more traditional look with visible grout lines, it also provides more flexibility during installation to accommodate minor substrate imperfections.

Installation considerations are crucial for Ottawa homeowners to understand. Rectified tiles demand more precise subfloor preparation since the tight grout lines will highlight any lippage (uneven tile edges). Your contractor will need to ensure the subfloor is perfectly flat and level. Non-rectified tiles are more forgiving of minor subfloor imperfections since the wider grout lines help mask small irregularities.

Cost implications include rectified tiles typically being 10-15% more expensive than non-rectified versions of the same tile. However, installation costs are often similar since experienced contractors can work efficiently with both types. The choice often comes down to your desired aesthetic - clean modern lines with rectified, or traditional character with non-rectified.

For your specific project, consider the room's style, lighting, and your tolerance for visible grout lines. A licensed flooring contractor can help you choose the best option based on your subfloor conditions and design goals.

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