10 Types of Deck Supports: A Comprehensive Guide

Deck supports play a crucial role in the longevity and stability of your deck. They help distribute weight, prevent sagging, and maintain leveling. When choosing deck supports, consider factors like load-bearing capacity, weather resistance, and durability. Here, we'll explore various types of deck supports and their applications.

Before we delve into the different types, it's essential to understand that deck supports are often categorized into two main groups: structural and non-structural supports.

Structural Deck Supports

Structural supports are designed to bear significant weight and provide the primary structural integrity for your deck. They are typically used for elevated decks or large, heavy decks.

These supports are usually made from durable materials like pressure-treated lumber, metal, or composite materials, and are subjected to building codes and engineering standards.

Posts

Deck posts are vertical supports that extend from the footing up to the beams or joists. They provide the majority of the support for your deck. Post sizes can vary, but they are often 4x4, 6x6, or even 8x8 lumber, depending on the load they need to bear.

Posts can be supported by post bases, which help distribute weight, prevent rotting, and simplify installation. LEDGER BOARDS: Where posts aren't feasible, ledger boards can be used to attach the deck frame directly to the house. However, they must be engineered correctly to avoid detachment issues.

Beams and Joists

Beams and joists work together to distribute weight evenly across the deck. Beams run perpendicular to the house and support the joists, which run parallel to the house. The size of beams and joists depends on the span and load they need to bear.

PROPRIETARY SYSTEMS: Some manufacturers offer proprietary deck support systems that include beams, joists, and other components. These systems can simplify installation and ensure that the deck is built according to engineer-approved plans.

Non-Structural Deck Supports

Non-structural supports, also known as occasional or intermediate supports, are used to provide additional stability and leveling to your deck. They are usually not intended to bear significant weight.

These supports are often made from less durable materials, like landscaping timbers or composite materials, and can be installed at any interval, unlike structural supports that are typically spaced at specific footing locations.

Support Posts and Piers

Support posts and piers are often used to level decks or provide additional support where needed. Unlike structural posts, they are not typically required to bear significant weight and can be installed in existing deck surfaces or at the edges.

Piers can be made from various materials, including concrete, plastic, or metal, and come in different sizes to accommodate different post sizes. They are often adjustable to account for varying heights and levels.

Lattice and Railing Supports

Lattice and railing supports provide additional stability and aesthetics to your deck. These supports are often used to attach railings, balusters, or lattice to the frame of the deck.

Lattice supports, also known as balusters, can be made from various materials, including wood, metal, or composite materials. They not only provide safety but also add visual appeal to your deck.

Regular inspection and maintenance of your deck supports are vital to ensure their longevity and your safety. This includes checking for signs of rotting, warping, or deterioration, and replacing or repairing supports as needed.

Ultimately, choosing the right deck supports depends on the size, weight, and design of your deck. Always consult local building codes and a professional builder or engineer when planning your deck project. Properly installed and maintained deck supports will provide a safe, stable, and long-lasting structure for years to come.