Gutter fabricator Mike Vidulich installs a one-piece covered gutter that should never have to be cleaned. In the backyard, Roger shows Kevin the native plants he's using to turn a patch of lawn back to nature, as required by the local Conservation Commission. Master electrician Allen Gallant shows Kevin the existing aluminum wiring in the old part of the house and how he's safely working with it to update the recessed light fixtures and add new sconces over the mantel. Norm visits a factory in Londonderry, New Hampshire, to see how they're making and testing two types of windows for the project. Roger shows Kevin the infiltration system that is going to disperse the water from gutters into the ground.