Similar to plaster, the presence of tiles poses challenges for rebar locators. Tiles are typically made of materials such as ceramic, porcelain, or stone, which do not possess significant magnetic properties. As a result, electromagnetic rebar locators often struggle to penetrate the tile surface and accurately detect rebars beneath.
However, the limitations posed by tiles can be overcome to some extent using GPR rebar locators. GPR technology allows for the detection of objects and changes in subsurface materials, including rebars, by analyzing the reflected radar pulses. This capability allows GPR rebar locators to penetrate through tile layers and provide more accurate results compared to electromagnetic locators.
In summary, the capability of rebar locators to detect rebars through plaster or tiles depends on the type of locator used. Electromagnetic rebar locators generally face limitations in accurately detecting rebars beneath plaster or tile layers due to their low-density and lack of magnetic properties. Alternatively, GPR rebar locators, with their radar-based technology, offer better prospects for detecting rebars through tiles. However, it is important to note that the specific composition, thickness, and quality of the plaster or tiles can still affect the accuracy of these locators.
Ultimately, when dealing with complex construction projects involving plaster or tiles, it is recommended to employ multiple detection methods in conjunction with rebar locators to ensure reliable and accurate results. These may include destructive testing, visual inspections, or complementary technologies like X-ray imaging.