Rail-less Solar Panel Mounting 400mm | Trapezoidal Metal Roof

A rail-free mounting system for solar panels on trapezoidal, corrugated tin, and flat metal roofs. Each 400mm aluminium profile replaces a full-length rail section, cutting weight and installation time. EPDM rubber pads seal every fixing point, and end and middle clamps come with each kit.

Key features

• Profile, 400mm aluminium section replaces full-length mounting rails
• Roof types, suitable for trapezoidal, corrugated, and flat metal roofs
• Fixing pattern, four-way, five-hole profile for flexible panel positioning
• Weatherproofing, EPDM rubber pads at each fixing point
• Screws, stainless steel, four per profile
• Clamps, end and middle clamps included per kit

Product overview

The short profile sits across the crest of a trapezoidal rib or corrugation and is fixed with four stainless steel screws, each sealed with an EPDM rubber pad against water ingress. The four-way, five-hole pattern lets the panel position shift laterally during fitting, which helps where rib spacing varies slightly across a roof. End and middle clamps are scaled to the number of modules ordered, so nothing extra needs sourcing separately.

What's in the box (per module)

• 400mm aluminium mounting profile
• 4x stainless steel fixing screws
• 4x EPDM rubber weatherproof pads
• End and middle clamps, scaled to order quantity

Applications

Used for solar PV on trapezoidal steel sheet roofing including industrial units, warehouses, and agricultural buildings, as well as corrugated metal and tin roofs and lightweight flat metal roof arrays.

Installation and safety

Must be installed by a qualified solar installer. All fixing screws must penetrate into a structural purlin or sub-frame below the roof sheet, so purlin spacing should be checked before ordering. Wind uplift must be assessed for the site; do not fix into the roof sheet alone without structural backing.