The Tunnel

S25E08 Residential Window Manufacturing - The Concord Cottage

Norm discovers Tom working on exterior trim that mimics wood but is made from cellular PVC, ensuring it won’t rot. Inside, Kevin observes Jeff collaborating with master electrician Allen Gallant to finalize the lighting layout. In the future sunroom, Kevin assists Norm and Tom in fitting new clad windows that match the traditional wood style of Janet's main house. At a glass manufacturing facility in Menomonie, Wisconsin, float glass specialist Al Slavich demonstrates the cutting-edge process of making residential window glass, producing over 550 tons daily. With the rough plumbing inspected, Tom teaches Kevin how to mix concrete on-site using a portable mixer, combining gravel, sand, and cement to save costs.