A popular option for homeowners who want a low-maintenance, easy-to-assemble patio roof or trellis is a manufactured metal system.
Though some simple models of these may be constructed by experienced do-it-yourselfers, most types are intended to be assembled by factory-accredited fabricators.
Aluminum is the material of choice for residential units because it is lighter in weight, more affordable, and easier to tool than steel.
Steel is used for commercial structures (such as those in parks) that are occasionally adapted for residential use. Both materials are given a durable powder-coated wood-toned or colored finish with a long-term warranty.
Although these structures look from a distance like they are made of wood, closer inspection reveals their stamped metal texture. This appearance is the trade-off for easy maintenance.