(a) Foundation walls shall be maintained so as to be structurally sound and to prevent entrance of moisture, termites and vermin. Such protection shall consist of shoring where necessary, subsoil drains at footings, grouting of masonry cracks, waterproofing of walls and joints and other suitable means.
(b) Exterior walls and wall components shall be maintained so as to prevent deterioration due to the elements and destructive insects. Such maintenance shall consist of painting, installation or repair of walls, copings and flashings, waterproofing of joints, waterproof coatings, installation or repair of termite shields, poison treatment of soil or other suitable means.
(c) Roofing shall be maintained in watertight condition so as to prevent leakage into the building. Such maintenance shall consist of repairs of roofing, flashings, waterproof coatings or other suitable means.