Thermal movement
ΔL = α × L × ΔT
Aluminium expands ≈ 0.024 mm per metre per °C: a 3 m profile moves ≈ 4.3 mm over a 60 °C range. Fix at one point and slide at the others.
07 · Fixings & Substructure
Rainscreen substructure and sealing
Imperial values are converted from metric; section and sheet designations stay metric.
07
Fixings & Substructure
Fasteners, anchors, rainscreen substructure and sealing products used to fix what the shop has fabricated.
- FX-FS Fasteners
- FX-AN Anchors
- FX-RS Substructure
- FX-SB Sealing
FX-RS / FX-SBRainscreen Substructure & Sealing
Aluminium subframe, isolators, fixings and sealing for ventilated façades.
FX-RS substructure
| Component | Material | Notes |
|---|---|---|
| Wall brackets | 6063 / 6005A- extrusion | Fixed and sliding points; sized to load |
| Carrier profiles | T · L · top-hat, 6063 / 6005A-T6 | Break at floors; leave thermal gaps |
| Thermal isolators | EPDM · polyamide pads | Reduce thermal bridging at brackets |
| Cassette hooks & pins | Stainless A2 / A4 · aluminium | For hook-on cassette systems |
| Stiffeners | Aluminium angle or top-hat | Bonded with structural tape / adhesive |
FX-SB sealing & bonding
| Sealing & bonding product | Use |
|---|---|
| EPDM gaskets & tapes | Joint and profile sealing, anti-rattle |
| Structural acrylic foam tape | Stiffener and panel-to-frame bonding |
| Silicone weather seal | Movement joints — ASTM C920 Class 25 / 50 |
| MS-polymer adhesive | Elastic bonding and sealing |
| Backer rod | Closed-cell PE; sets sealant depth |
Aluminium solution heat-treated and artificially aged for maximum strength (6000-series extrusions and plate).