Quick Answer
Rocking a cistern cover involves ensuring a secure and watertight fit, using a rock or gravel base for drainage, and applying a waterproof sealant to prevent leaks and damage from settling soil.
Preparing the Base
Before rocking a cistern cover, it’s essential to prepare a stable and level base. Dig a shallow pit for the cistern, at least 12 inches deep and 2-3 inches larger in diameter than the cistern itself. Fill the bottom with 2-3 inches of compacted gravel or crushed stone to facilitate drainage and prevent water logging.
Applying the Waterproof Sealant
Apply a waterproof sealant around the cistern, extending it at least 6 inches up the sides. Use a 1/4-inch bead of sealant, followed by a 1/8-inch bead of caulk for a watertight seal. Be sure to follow the manufacturer’s instructions and wait for the sealant to cure before rocking the cover into place.
Rocking the Cover
Rocking the cistern cover into place requires patience and precision. Start by placing the cover on a rock or a metal ring, ensuring it’s centered and level. Gently rock the cover back and forth, working your way around the cistern in small sections. Use a rubber mallet to tap the cover into place, checking for any gaps or unevenness. Once the cover is secure, use a level to ensure it’s properly aligned and sealed.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.