Most of the time, it refers to structural wood elements that have been damaged by water, if it isn’t talking about problems with the foundation itself. Structural problems can refer to a variety of differing things, ranging from problems with the foundation itself to structural lumber that has been damaged by weather. Of these, structural problems are generally the worst. As homes age, there are a number of things that can go wrong with them, some of which can be quite serious. Working on older homes presents the carpenter or woodworker with special problems. How to Cut a Groove or Channel on Wood Without a Router.Drying Wood in the Oven: The Ultimate How-To Guide.How to Fix a Sagging Couch with Plywood.The Ultimate Guide to Building a Portable Generator Enclosure.The Ultimate Guide to Building a Bat House.Aquarium Cabinetry: A DIY Guide to Custom Aquarium Stands.The Ultimate Guide to DIY Birdhouse Design.The Uses of and Challenges in Cutting Formica.Exterior Walls Construction: The Start-to-Finish Guide.