A protective guard securable over a top support bar of a fence includes an elongated member, such as an elongated tube, having first and second ends, an outer surface, an inner surface defining an interior space for capturing the top support bar and an elongated opening extending between the inner and outer surfaces and the first and second ends of the elongated member, whereby the elongated tubular member is securable over the top support bar of the fence. First and second attachment flanges are integrally formed with the elongated tube on opposite sides of the elongated opening, the first and second attachment flanges being adapted for engaging opposite sides of the fence when the protective guard is secured atop the top support bar of the fence. The protective guard may also include at least one securing element in contact with the first and second attachment flanges for securing the attachment flanges together on opposite sides of the fence.