Expansion & Contraction

All building materials are subject to expansion and contraction caused by changes in temperature and humidity. This applies to everything in your home, even including the concrete. Dissimilar materials expand or contract at different rates. This results in separation between materials, particularly dissimilar ones. The effects of this expansion and contraction can be seen in such things as small cracks in the foundation, drywall, paint -- especially where moldings meet sheetrock, and mitered corners, where tile grout meets tub or sink, etc.. These can be alarming to an uninformed homeowner, but, in fact, it is very normal, even in the highest quality of construction. Especially in Florida, shrinkage of wood members of your home is inevitable.