Floorlayers usually work in crews of two or more. It takes teamwork to roll and align carpeting and achieve tight fits. Most of the work is in-doors, except for the installation of indoor-outdoor carpets, which usually occurs on commercial, institutional or residential properties. Floor and wall coverings are installed on all types of surfaces - wood, concrete, drywall and metal - so the floorlayer must know the safe and proper use of many types of adhesives and fastening systems. Floorlayers spend a lot of time replacing old flooring in furnished buildings, and must be neat and clean, and careful not to damage furnishings. Floorlayers are also the last workers in buildings under new construction or renovation, and they must be careful not to damage the work of other tradesmen.