Remodeling a vintage RV like the 1987 Holiday Rambler Presidential is a rewarding but challenging project. One key aspect I learned early on is the importance of addressing the materials used in the RV’s structure, such as ensuring that the poly sheathing and exterior panels are properly installed and up to current regulations. During the renovation, I encountered areas with old extruded poly and questionable applications of sheathing that required careful removal and replacement to improve insulation and durability. Day 5 marked a significant phase where we evaluated and upgraded the underlayer materials. Understanding how these components function to protect against weather and wear made a huge difference in the quality of the renovation. I recommend that anyone undertaking an RV renovation takes the time to research the applicable codes and best practices, including the proper use of poly sheathing and insulation materials. This not only improves the RV’s longevity but also enhances energy efficiency for a better travel experience. Sharing this experience, I hope to encourage RV enthusiasts to pay close attention to the details that can often be overlooked, like the sheathing and the layers beneath visible surfaces. Taking a methodical approach helps prevent costly repairs down the road and creates a more comfortable home on wheels. Stay tuned for more updates as we continue transforming this classic travel trailer into a modern, cozy living space.