Corrugated metal has alternating peaks and valleys to shed water or other elements. It is widely used to roof sheds, barns and other buildings. It also can be used for walls; many shops, garages and similar businesses operate in structures with corrugated metal walls. Corrugated metal, either galvanised steel or aluminium, is easy to install and durable. Most styles can be obtained with various colours of weatherproof finish. Panels also come in different metal gauges or strengths; wall panels generally are heavier but roofing panels can be used on walls.
Decide whether the corrugated panels will be installed with horizontal or vertical valleys. Either is satisfactory. Horizontal panels are more common on business and industrial buildings, but vertical installation may shed water better. Then measure the distances of wall framing members. Corrugated panels are designed for installation points at 24-inch intervals, allowing panels to overlap. Panels are 26 or 27 1/2 inches wide, depending on height and width of peaks, and come in lengths from 8 to 16 feet.
Place the first panel at the bottom if the wall, if installing it horizontally, or at one end, if going vertical. Put screws along the bottom. Then hold the panel solidly against the wall framing and add screws at the top to hold it. Put screws into the wall framing all along the panel at 12-inch intervals.
Add panels. Overlap horizontal joints by 4 inches with at least one peak over a peak on the adjoining panel. Make all overlaps so water cannot run between panels. Install panels until the wall is covered. Cut panels to fit as needed with tin snips or a metal saw.
Put metal flashing at the top where the wall meets the roof; this is bent so it goes over the top of the panel to prevent water from running from the roof behind the wall. Add corner coverings where walls intersect for support and to cover sharp edges. These can be bought at roofing or building supply stores.
Get help to handle panels. They are not heavy but are unwieldy to handle.
Be careful of sharp edges when cutting and handling metal panels. They can cut fingers and hands.
Tips and warnings
- Get help to handle panels. They are not heavy but are unwieldy to handle.
- Be careful of sharp edges when cutting and handling metal panels. They can cut fingers and hands.