In this guide
Plan the roof joints
Continuous sheets can avoid end joints, but very long sheets create transport and handling constraints. Where a roof needs more than one length, have the end-joint and waterproofing detail confirmed before ordering.
Check the actual container
Use approximately 5.8 m for a 20-foot container and 11.8 m for a 40-foot container as preliminary planning lengths. Usable length depends on the container, packaging and loading method. Ask for the packing plan rather than treating these figures as universal limits.
Agree the handling method
Tell the supplier about site access and lifting equipment. Longer sheets may need multiple support points and specialist lifting. Do not infer a safe crew size from sheet length alone. Final cuts should include only the allowances shown on the approved layout.
Two packing approaches
Short sheets can be packed in separate positions along the container, while long sheets run along its length. Shorter sheets can simplify handling; longer sheets may reduce roof end joints but require suitable destination unloading equipment.
Ask the loading plan to state sheet length, sheets per pack, number of packs, pack dimensions, total weight and effective coverage area. The sum of length multiplied by effective width and sheet count should match the quoted area. Container capacity must be checked from that actual plan, not a general thickness percentage.
Confirm the right panel and specification with GMiSU.
Send your drawings, dimensions, quantity, color, destination and target schedule for project-based recommendations.