The most common uses are as sheathing in walls, flooring, and roof decking. As well as timber, steel or aluminium decking is used, as well as laminate boards. Mahogany also resists wood rot, making it attractive in boat construction and outdoor decking. Several homes and mobile homes had metal roofing peeled back or decking exposed. McLean oversaw the construction of wooden shelter decks, known as Mechano decking. The timber is also valuable in applications that require toughness, such as truck decking. The engine cowling, rear fuselage and top decking are of fibreglass. Honeycomb structures were developed as flat sandwich sheets used for bulkheads and decking. Generally, hardwoods used for decking come from tropical forests. The decking, benches and mast were removed. They began using aluminum tubing and replaced the lace with neoprene and nylon decking. The Yak-9 had a lowered rear fuselage decking and all-around vision canopy. The steel decking was supplied by Profile Steel. Surfaces at the carriageway and pavement decking were replaced. Products include pulpwood, fuel, decking, and utility poles.