Synthetic shake roofs are designed to mimic the look of natural wood, using durable materials like plastic or rubber composites. They are valued for being lightweight, fire-resistant, and low-maintenance. However, leaks can still occur, especially around skylights where the roof’s smooth surface meets the glass frame. One common cause is improper flashing installation or aging of the flashing, which can create gaps allowing water to seep in. Another source might be damaged or misaligned synthetic shingles near the skylight, as wind or temperature changes can cause movement or cracks over time. Simple DIY checks include inspecting the flashing for visible cracks, rust, or gaps, and looking for any shingles that appear loose or warped near the skylight. It’s also helpful to check inside the attic or ceiling for water stains or dampness after rain, which can confirm the leak location without climbing onto the roof.
If you notice signs of leaking that you cannot confidently locate or fix, it’s wise to call a professional roofer. Synthetic materials require careful handling, and improper repairs could void manufacturer warranties. When you consult a contractor, ask specific questions like, “What type of flashing do you recommend to ensure a watertight seal around this synthetic shake skylight?” and “How will you verify that the repair maintains my roof’s original warranty?” A qualified roofer should also suggest a water test or a thorough inspection to pinpoint leaks accurately. Addressing skylight leaks promptly prevents further structural damage and preserves the aesthetic appeal of your synthetic shake roof.