A floor joist should overlap the joist next to it by only 3 to 4 inches. The hump may be noticeable, but unless it’s causing cracks to the room’s walls and/or ceilings it’s not a major problem.

According to the manufacturer, Open Joist Inc. of Trois-Rivieres, Quebec, Open Joist 2000 "is a trimmable all-wood open-webbed finger-jointed floor truss without metal plate connectors.

While a thin wood shim is effective at silencing an isolated squeak at a specific spot, if you find a long gap running the length of a floor joist, it wouldn’t make sense to install a whole ...

US researchers working with SHoP Architects have created a potential alternative to steel and concrete as a structural floor material: recyclable panels made entirely from bioplastic and wood flour.