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Mounting System · Exposed Fasteners
The panel is cut to size and riveted directly to the aluminum studs, with fixed and sliding points to allow for expansion. It is the simplest system to fabricate and install.
Riveted system
In the riveted system, the composite panel is cut to size, with no flanges or folds, and fixed directly to the aluminum rails with wide-head rivets. It is the fastest system to machine and install, needs the least workshop work and is one of the most economical; it also allows free layouts, horizontal or vertical, and makes curved areas easy to resolve.
The secret is letting the panel move with temperature: one or two fixed points per piece and sliding points everywhere else, with controlled tightening that does not restrict expansion. Rivets can be aluminum or stainless steel, which is recommended near the sea, around swimming pools or in other chloride-rich environments, and can be ordered coated in the panel color. At StarModul we ship the cut panels and the substructure, or install them ourselves if the project is in Catalonia.
Visible fastening
The composite panel is cut to size, without flanges or folds, and is riveted directly to the vertical aluminum mullions using wide-head rivets. It is the fastest system to fabricate and install; it accommodates both horizontal and vertical cuts and makes it easy to handle curved sections.
Dilation
Aluminum expands with temperature, so the panel cannot be riveted “all the way” at every point: you have to allow it to move.
Common mistake: Drilling the profile off-center relative to the large hole in the panel. The rivet rests on one side, and the panel bulges due to the heat.
Construction details
System Specifications
| Element | Detail |
|---|---|
| Spacers | 6063 T5 aluminum double-T profile (59 to 254 mm) or U-shaped, with optional insulating spacer. |
| Stiles | 6063 T5 aluminum omega profile, attached to the spacer with an M6 × 60/70 mm through-bolt. The first and last anchors must be no more than 250 mm from the ends. |
| Substructure | Unidirectional (vertical posts only: the horizontal joint remains open) or bidirectional (with horizontal crossbars attached to the posts using a 3-mm aluminum strip and a 4.8-mm rivet or screw). |
| Fixed-point drill | Ø 5.1 mm in the panel. |
| Sliding-point drill | 7.1 to 8 mm in diameter in the panel, centered over the hole in the profile. |
| Distance to the edge | Minimum 15 mm and maximum 100 mm. The spacing between rivets is determined by the wind load calculation. |
| Rivets | 5 × 12 mm blind rivet with a 14 mm head (aluminum/stainless steel) or 5 × 14 mm facade rivet with a 15 mm head (all A4 stainless steel). Also, 4.8 × 19 mm stainless steel screw. |
| Tools | 7.0/5.1 mm double-ended drill bit with depth stop, center punch, and spacer tip that leaves 0.2 mm below the rivet head. |
| Distance from wall to panel face | From 63 to 273 mm, depending on the spacer. |
| Insulation | From 30 to 230 mm, with a 30 mm air gap. |
Frequently asked questions
5 mm Ø wide-head blind rivet, made of aluminum/stainless steel or all stainless steel for use in harsh environments. Can be ordered with a lacquer finish to match the panel color.
To allow the panel to expand. Only 1 or 2 points per panel have a fixed drill bit (Ø 5.1 mm); the rest, ranging from Ø 7.1 to 8 mm, are sliding.
Yes, it's a visible mounting system. If you don't want visible fasteners, choose the adhesive system or a track system (suspended or tongue-and-groove).
We'll send you the custom-cut panel and the substructure, or we'll install it for you if the project is in Catalonia.