You want to replace old, damaged siding before you put your home on the market or get a property value appraisal, as old siding can lower your home value significantly. Steel siding is an option that while it does come with a higher upfront cost, can increase your home’s value, with an estimated average 86% ROI. Home buyers will appreciate the durability and low-maintenance requirements steel siding offers, especially compared to other options. This form of siding is also energy-efficient, with an average R-value of 0.61, before you add insulation.