Some Covid safe changes might be as simple as facilitating social distancing through labyrinth entries which omit doors, automating doors, spacing hand basins and urinals further apart, or providing full-height WC partitions.
Perhaps the standard washroom layout should be questioned. There has been an increased interest for ‘superloos’ or unisex washrooms, as these offer individual self-contained toilet and basin facilities, which make social distancing easier to achieve. Each superloo is separately ventilated, thus reducing the mixing of air compared with more traditional washrooms. This layout also provides a flexible gender-neutral provision, which can easily accommodate changes in numbers for male and female users.