PVC roofing membranes are popular for their durability and waterproof qualities, but they can suffer from UV degradation over time. UV degradation happens when sunlight’s ultraviolet rays break down the chemical bonds in the PVC material, causing it to become brittle, crack, or lose flexibility. This deterioration can lead to leaks and reduced performance. Often, you’ll notice chalky white residue, cracking, or peeling on the surface as early warning signs. Simple checks you can do yourself include visually inspecting the roof for these signs and gently bending a small section of the membrane to see if it feels less flexible than before. Be careful not to cause any damage during the inspection. It’s also good practice to check the manufacturer’s warranty, as some warranties cover UV damage for a certain period, and regular maintenance might be required to keep coverage valid.
If your DIY inspection reveals significant cracking or brittleness, or if you see areas where the membrane is peeling away, it’s time to call a professional roofer experienced with PVC systems. They can assess whether repairs, patching, or a full membrane replacement is necessary, always considering code compliance and warranty factors. When speaking with your contractor, ask them how they plan to address UV damage specifically and if they suggest any protective coatings or additives to extend the membrane’s life. You might also inquire about their process for ensuring the repairs maintain the integrity of your roof’s warranty, as improper fixes can sometimes void manufacturer coverage. These questions help ensure you get a solution that’s not only effective today but also durable for years to come.