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Pedestal Installation Guide
Adjustable pedestal systems are designed for fast and reliable installation of porcelain pavers, concrete pavers, and deck tiles over rooftop decks, terraces, plaza decks, and patios. Pedestals create a stable, level surface while allowing water to drain beneath the installation. This guide explains the basic steps for installing pedestal systems over waterproofing membranes and other deck substrates.
Common Applications
Pedestal systems are commonly used for:
Rooftop Decks • Plaza Decks • Commercial Terraces • Porcelain Paver Decks • Concrete Paver Decks • Landscaped Podium Decks
Installation Over Waterproofing Membranes
Pedestal systems are commonly installed directly over waterproofing membranes on rooftop decks and plaza deck structures. The pedestal bases distribute the load evenly while protecting the waterproofing layer below. In most installations, protective pads or separation layers may be used between the pedestal base and membrane to prevent damage. Always follow the membrane manufacturer’s recommendations when installing pedestal systems over waterproofed surfaces.
Leveling Uneven Surfaces
Adjustable pedestals make it easy to correct uneven deck surfaces. Each pedestal can be individually adjusted to create a perfectly level walking surface, even when the structural deck below has slope or irregularities. This makes pedestal systems ideal for rooftop decks where slope is required for drainage.
How Many Pedestals Do I Need Per Square Foot?
The number of pedestals required depends on the size of the pavers or deck tiles being installed. In most applications, pedestals are placed at the corners of each paver. Larger pavers or heavy loads may require additional pedestals at midpoints or center locations. Always follow the paver manufacturer’s spacing recommendations and refer to the pedestal spacing chart for guidance.
Products Used in This System
Typical pedestal deck systems include adjustable pedestal supports, separation pads, and porcelain or concrete pavers. Pedestal heights can be adjusted to achieve the required finished elevation while maintaining proper drainage beneath the deck surface.