Installing synthetic slate according to manufacturer specifications starts with thoroughly inspecting the roof deck to ensure it’s clean, dry, and structurally sound. Begin by laying down an approved underlayment, such as synthetic roofing felt or rubberized asphalt membrane, to create a moisture barrier. Next, install drip edge flashing along the eaves and rake edges to direct water off the roof. When beginning the synthetic slate installation, start from the bottom edge of the roof and work your way up in horizontal rows. Align the first course carefully, ensuring the tiles are straight and properly spaced per the manufacturer’s guidelines. Fasten each tile securely with corrosion-resistant nails, usually two per tile, placed in the designated nailing areas to avoid damaging the product or voiding the warranty. Overlapping of tiles is key to prevent leaks, so follow the pitch-specific coverage patterns provided by the manufacturer, adjusting for valleys or roof features like chimneys. Keeping the work area clean and checking each tile’s alignment regularly helps maintain a neat appearance and proper function.
A simple DIY check is to inspect nails and tile alignment from the ground using binoculars to spot uneven rows or lifted tiles, especially after storms. Also, ensure flashing around roof penetrations like vents and chimneys is intact and not lifting, which synthetic slate installation should accommodate by integrating with these details per instructions. Homeowners should call a professional if tiles appear loose, if you notice water stains inside the attic, or if you’re unsure whether the installed underlayment and flashing meet manufacturer specs. When speaking to your roofer, ask, “Do you strictly follow the manufacturer’s installation guide for synthetic slate to maintain the warranty?” and “Can you show the flashing details around roof penetrations and valleys that ensure a watertight seal?” This helps confirm they understand the system’s nuances, protecting your home’s investment and the product’s durability.