Broken or cracked window panes can be a potential safety hazard so it is best to have them replaced. Old, cracking, sun-damaged window putty should also be reapplied where necessary. Window and door finishes should be checked for any paint deterioration or rot. Ensuring that the windows and doors seal properly will assist in reducing utility costs, as it will be easier to heat or cool down the inside of the home. It is vital to check whether any door frames have shifted over the last six months as this could point to an issue with the foundation or structure of the home.