Damage for installation
8.—(1) The owner instructing or carrying out an installation must, so far as reasonably practicable, ensure that the other part of the tenement is left substantially in no worse a condition than that which it was in immediately before the installation (subject to the installation itself).
(2) If the owner fails to comply with the duty in paragraph (1), an owner of the other part of the tenement or a relevant contributor may—
(a)carry out, or arrange for the carrying out of, such work as is reasonably necessary to restore the other part of the tenement so that it is substantially in no worse a condition than that which it was in immediately before the installation (subject to the installation itself); and
(b)recover from the owner any expenses reasonably incurred in doing so.