The invention discloses a BIPV photovoltaic roof
system and a construction method, and belongs to the field of roof construction, and the BIPV photovoltaic roof
system comprises a roof structure, a waterproof layer laid on the roof structure, a
keel supporting system penetrating through the waterproof layer and connected to the roof structure, photovoltaic modules laid on the
keel supporting system, and decorative rods covering the left and right adjacent photovoltaic modules. The decorative rod is of a
barrel-shaped structure which is narrow in head and wide in
tail and provided with an opening in the lower portion, and the decorative rod comprises vertical clamping parts on the two sides and a decorative part between the two clamping parts. The
tail parts of the decorative rods are provided with inserting clamping edges, and the decorative rods connected end to end are inserted through the inserting clamping edges in a matched manner; an
assembly bayonet with a high
tail and a low head is formed in the lower part of the decorative rod, and the bayonet depth of the
assembly bayonet is gradually increased from the tail to the head; the lower frame of the photovoltaic module is clamped on the module bayonet; and a sealing plug is arranged on the decorative rod close to the
cornice. The problems that an existing photovoltaic roof is generally single in structural modeling, small in roof application range, poor in heat dissipation performance and poor in waterproof leakproofness are solved.