Allyson discusses the importance of soundproofing in custom luxury home builds. Soundproofing can be achieved through sound isolation (blocking) and sound absorption (dampening). In residential buildings, it's essential to mitigate noise from footsteps, conversations, and other activities to create a comfortable living environment. When soundproofing ceiling cavities, using dense insulation like stone wool is key to absorbing sound and reducing vibrations. Placing insulation at the bottom of ceiling joists helps block noise from above, as sound travels across hard surfaces. This approach is effective in preventing noise transfer between floors in multilevel buildings. Overall, soundproofing plays a significant role in enhancing the overall experience and comfort of a custom home.