The "Measures for the Management of Special Residential Maintenance Funds" stipulates that the main parts of the residence that need to be withdrawn for maintenance funds are repaired. According to laws, regulations and house sales contracts, the owner of a single residence or the owner of a single residence shall The most common parts of the interior owners and non-residential owners connected to the structure generally include: the foundation of the residence, load-bearing walls, columns, beams, floors, roofs, and outdoor walls, foyers, stairwells, corridors, etc. .

Article 20 The costs of repairing, updating and transforming the first-use parts of the residential building and the first-use facilities and equipment shall be apportioned in accordance with the following provisions:

(1) Commercial housing The costs of repairing, updating, and renovating the first-use parts, first-use facilities and equipment between commercial residential buildings and non-residential buildings shall be shared by the relevant owners in proportion to the construction area of ??the properties they own.

According to the above regulations: As long as *** the owners who use the roof share the cost in proportion.