Synthetic slate roofing is designed to mimic the look and durability of natural slate but is made from materials like rubber, plastic, or polymers. Seam failure in synthetic slate happens when the joints between the shingles start pulling apart, leading to gaps that can let water and debris through. This issue often arises due to poor installation, material stretching over time, temperature changes causing expansion and contraction, or inferior-quality adhesives and fasteners. To check for early signs, homeowners can look for visible gaps, lifting edges, or missing shingles while on a sturdy ladder, being careful to avoid damaging the roof. It’s also useful to inspect after heavy weather to catch any movement or looseness. However, avoid walking extensively on synthetic slate, as it can be less forgiving than traditional roofing materials.
If your DIY inspection reveals noticeable seam separation or shingles that seem loose, it’s a good idea to call a professional roofer experienced with synthetic roofing materials. A contractor can assess whether the seams can be resealed, shingles replaced, or if broader repairs or partial re-roofing are necessary. When discussing with a roofer, ask how they handle sealing seams to ensure long-term adhesion and whether they use fasteners or adhesives that meet the material manufacturer’s warranty guidelines. Also, inquire about their experience with synthetic slate specifically and if they offer any warranty on their workmanship in relation to seam failure. Prompt and proper repairs help prevent water intrusion and maintain the roof’s appearance and performance, protecting your home investment over time.