A robust sub-frame is the backbone of any successful Honeycom composit pannel installation, usually constructed from aluminum channels or galvanized steel. These vertical and horizontal members must be installed with uniform spacing, often 600mm center-to-center, to provide adequate support for wind loads. A well-aligned sub-frame guarantees a flat mounting surface, which is critical ... https://kkroofspecialist.com.sg/honeycom-composit-pannel-installation/