Use three 8D common nails or #12 screws to attach. Notch next slate for tight fit. Place 3 feet apart in a zigzag pattern.
Use two 1-5/8″ deckfast screws. We recommend sealing with 795 Dow Corning silicone or better grade.
Notch at end of shingle. Place 3 feet apart in a zigzag pattern.