The answer to 'missing underlayment' is that a missing or improper underlayment can lead to several issues with your roof, including leaks, damage to the roof deck, and reduced lifespan of the roofing material. Underlayment is a critical layer that provides a secondary barrier against water intrusion and protects the roof deck from the elements.
Common causes of a missing underlayment include improper installation by a previous roofer, damage or deterioration over time, or a DIY roofing project that skipped this important step. Symptoms may include visible leaks, water stains on the ceiling or walls, and accelerated wear on the roofing material. The solution is to have a professional roofer inspect the roof and properly install the correct underlayment before replacing the roofing material.