Buyer Guide
Rooftop PV Mounting Guide: Roof Types, Wind Inputs & BOM RFQs
Mounting is not a generic accessory line item. The right Huicheng kit depends on roof material, whether penetrations are allowed, module dimensions, and local wind assumptions. This guide maps the six datasheet systems to typical roofs and lists engineering inputs buyers should attach to an RFQ.
Match the kit to the roof structure
Adjustable flat-roof tripod suits tiled or concrete decks where a tilted array is acceptable. L-foot + rail kits target screwed metal decks with 28×43.8 mm class rails, mid clamps, and end clamps. Balast trays fit membranes where penetrations are restricted—confirm dead load limits with the building owner. Balcony wall mounts use telescoping AL6005 members for railing or facade installs. Corrugated plants use H-type or G-type seam clamps with different rail profiles—specify sheet shape and purlin spacing.
Share module layout before asking for “per panel” price
Suppliers need module model (length × width), portrait vs landscape, row count, row spacing, edge setback, and target tilt. A BOM scales with rails per row, L-feet or ballast trays per module, and fastener counts—not only module quantity. Linking to your chosen Jinko, Trina, or JA module page avoids mismatched clamp spacing on large-format frames.
Wind, snow, and exposure: what to declare
Catalogue BOMs show materials (AL6005 structure, SUS304/SUS201 fasteners) and install steps; structural sign-off may still be required locally. Provide design wind speed or national code reference, exposure category (open terrain vs urban canyon), building height, parapet details, and whether the array sits at the roof edge or inset. Note snow load if applicable. Coastal or high-rise sites may need closer spacing or heavier ballast—state the region rather than assuming a universal kit.
Penetration, waterproofing, and install responsibility
Metal-roof L-foot kits rely on through-fasteners with documented torque and sealant practice; ballast systems shift load to distributed weight and may need wind deflectors or lower tilt. Ask who performs layout, who signs structural calcs, and whether you need install training only or full EPC supply. For export, mention container mix—modules and brackets in one shipment vs brackets first for civil prep.
Export packaging and coordination with modules
Bracket quotes should include destination port, Incoterms, and whether cut-length rails or full sticks are preferred for local cutting. Share planned container counts so rail volume aligns with module pallets—shortages on site often trace to underestimated connector pieces or the wrong corrugated profile (H vs G). Combine this RFQ with module and inverter interest when you want one export conversation.
Minimum RFQ inputs for a quotable mounting BOM
Include roof type (material + penetration rules), module model/dimensions, layout (portrait/landscape, rows, spacing, edge setbacks), tilt, design wind/snow assumptions (or code reference), building height/exposure, and destination market. Add Incoterms/port, quantity, and whether structural calcs are required locally.
Request a quote for a rooftop mounting BOM
Send roof type, module model/dimensions, layout + tilt, wind/snow assumptions, and destination market. Add Incoterms/port, quantity, and whether penetrations are allowed so we can return a quote-ready BOM.
Request a Quote