How should transitions between tile and other floor coverings at door thresholds be addressed?

• A. Remove the transition entirely and leave a gap between floor coverings.
• B. Use a transition strip or threshold strip; ensure flush height and a clean caulk joint; maintain a consistent grout line if possible.
• C. Use decorative tape over the edge.
• D. Ensure tile edges are flush with no transition and no caulk.

Answer: (B)

A proper transition at door thresholds uses a transition strip or threshold strip to bridge the difference between tile and the adjacent floor covering. This creates a smooth, safe path, protects the edge of the tile from chipping, and gives a clean joint that can be sealed with caulk to keep moisture from seeping underneath.

Installing the strip flush with both surfaces is key, so the height matches and a clean caulk joint can be used to seal the seam. Keeping the height even helps prevent trips and allows for small movements due to expansion and contraction.

If possible, you aim to align or continue the grout line through the transition to maintain a cohesive look, though some variation may be needed depending on the materials and space. Alternatives like decorative tape are not durable or appropriate for long-term wear, and leaving a gap or having no transition at all creates trip hazards and edge damage.