Host Kevin O'Connor arrives to find the new family addition framed up; however, the discovery of a cast-iron pipe creates a problem. The crew must come up with a fix. They decide to add a new footing and a lally column in the basement. The kitchen also requires new post supports to accommodate the new stove vent and hood. Master carpenter Norm Abram meets window restoration specialist Alison Hardy at her shop in Peabody, MA. Part of the "This Old House: Trade School" series.