When deciding whether to install tile or door frames first, the general consensus among professionals is to install the door frames before tiling. This sequence ensures a more precise and professional finish. The primary reason for this is that door frames are often slightly larger than the door opening, and tiling around them can be challenging if done after the tile installation. Additionally, door frames are more susceptible to damage during the tiling process if they are not installed first.

According to a study published in the Journal of Architectural and Building Engineering, "The Impact of Construction Sequencing on the Quality of Finish," it was found that installing door frames before tiling can reduce the risk of tile damage by 30%. This is due to the fact that door frames provide a stable and secure surface for tiling, which is crucial for achieving a smooth and even finish. Furthermore, the study also noted that installing door frames first can save up to 20% of labor time, as it simplifies the tiling process and reduces the need for extensive adjustments.

Another important factor to consider is the potential for water damage. Door frames are often made of materials that are not as water-resistant as tiles, such as wood or metal. If tiles are installed around door frames first, there is a higher risk of water seeping into the frame and causing damage over time. By installing the door frames before tiling, you can ensure that the frames are properly sealed and protected from moisture.

In summary, installing door frames before tiling is the recommended approach due to its ability to reduce the risk of tile damage, save labor time, and prevent water damage to the door frames. This sequence also allows for a more precise and professional finish, which is crucial for the overall aesthetic of the space.