Restore Fireplace, Porch Swing | Ask TOH

On this episode of Ask This Old House Roger and Jenn share some tips for killing weeds without hurting the lawn; Mark delicately restores a damaged historic fireplace that is built with custom, nearly irreplaceable bricks; Richard and Ross discuss improvements to thermostats and how they contribute to comfort in a home; Tom adds structure to a porch in order to safely hang a swing.   Why is This Lawn Patchy? Roger and Jenn share some tips for killing weeds without hurting the lawn.