Which type of wood surfaces need to be classified as PC when coated?

The classification of wood surfaces as Potentially Contaminated (PC) relates specifically to the manner in which they can absorb or retain biological contaminants, particularly in trauma or crime scene situations. Wood trim, being a porous material, has the capacity to absorb and hold onto contaminants such as bodily fluids, which can pose health risks. When coated, these surfaces can become even more challenging, as the coating may seal in contaminants instead of allowing for proper cleaning and decontamination.

Unlike wood surfaces, ceramic does not absorb contaminants in the same way due to its non-porous nature, making it less likely to retain harmful substances. Medium Density Fiberboard (MDF) can also be a concern, but it is generally treated differently in terms of contamination risk due to its composition and how it is usually used in construction. Textured ceilings, while they can collect dust and debris, do not typically pose the same level of risk as wood trim when it comes to contamination from biological materials.

Therefore, wood trim is classified as Potentially Contaminated when coated, primarily due to its ability to absorb contaminants and the potential health risks associated with these materials in the aftermath of a trauma or crime scene.