A site plan of the property; roof plan showing the precise locations of the solar panels, junction boxes, conduit, and disconnecting equipment; and a building elevation showing the location of electrical panel(s), electrical meter, disconnection devices, inverter, and required signage. Details showing the method of attachment, waterproofing method(s), solar panel spacing above the roof and an electrical design/diagram produced and sealed by a Texas Licensed engineer are also need.
Lastly, a detailed sketch depicting the roof framing members; including rafter size, rafter spacing, rafter direction, purlin locations, purlin bracing locations, decking thickness, type of roof material, and the number of layers of shingles, must be provided for adequate structural assessment. Roofs that do not meet minimum building code requirements may require an engineer’s design and professional seal.