Sandwich Panel Installation Process: Step by Step

Step 1: Site survey and measurement

Every professional Sandwich Panel installation starts on the ground, not on paper. An engineer measures the full building envelope - wall and roof spans, opening positions, existing frame condition - and agrees the panel layout with you. This survey drives the cutting schedule, which is where most waste is either created or saved. Get a survey appointment as part of your quotation request.

Step 2: Steel frame and structure readiness

Sandwich Panel cladding a steel-frame building need a frame that is plumb, level and dimensionally true. Before panel arrive, corrections to columns, purlins and girts are far cheaper than after. The frame also defines where panel stop and start: around doors, windows, lintels and roof hips.

Step 3: Panel schedule and delivery sequence

Panel are ordered by the schedule prepared in Step 1 - exact lengths, in the order the crew will install them. Delivering in installation order matters: panel are long, heavy and unhappily stored on an unbuilt site. A good supplier sequences deliveries so each batch is lifted straight onto the frame.

Tools and crew: what a professional install needs

A serious installation runs on trained crews, mechanical lifting and the right fastener schedule. Panel are lifted by crane or mobile lift rather than dragged - scratched skins become rust lines later. Fasteners are driven at the spacing the engineer specified, not "a screw every one or two feet", and the torque is set so the washer seals without crushing the panel face. The same discipline applies to the sealant: the right type, applied the right day, in the right weather.

Working around the Bangladeshi monsoon

Panel installation is weather-sensitive in ways site work rarely is. Sealant needs clean, dry surfaces; panel drying outside in humid air can pick up moisture between factory and frame. Seasoned crews plan the envelope so that each wall section is closed and sealed as soon as it is fixed, keeping the shell ahead of the rain rather than chasing it. That sequencing skill is exactly what you pay for when you choose installation crews who handle panel daily.

Step 4: Fixing panel to the structure

Work proceeds bay by bay: the first panel is plumbed and fixed, the next panel tongue-and-grooves into it, and the line is checked for alignment before fastening. Fixed-length panel keep joints vertical; long-run walls are scheduled so joints stagger neatly between rows. Avoid cutting panel on site wherever possible - a planned layout needs very few.

Step 5: Joints, trims and waterproofing

Panel joints are sealed with compatible sealant as they close, and every edge gets its trim: ridge capping on roofs, flashing at wall-to-roof junctions, corner covers and trim around openings. This stage decides how the building behaves in a monsoon. A sealed, trimmed building stays dry; shortcuts here show up as leaks within the first season.

Step 6: Inspection and handover

The installation closes with a walk-through: joint integrity, fastener spacing, trim fit and overall straightness are checked against the schedule. You receive a note of what was installed and a practical warranty of workmanship. A walk-through is standard on every RPS install.

Installation timeline for a typical factory building

Stage	Typical duration
Survey and layout	1-2 days
Production and supply	2-3 weeks
On-site installation (walls and roof)	Depends on area and crew size
Trims, sealant and handover	1-2 days after panel

Installed by engineers, or DIY?

Panel fixing itself is within reach of a confident contractor, but surveys, sequencing and sealing are where quality is won or lost. If the building is a factory, cold room or anything that must stay dry, use a crew that installs professional Sandwich Panel installations daily. RPS supply-and-install teams work nationwide - ask for an installation quote alongside your panel price.