The decision to construct an in-ground pool is a big investment. Making the right decisions in regard to the construction method and design are key to the longevity of your investment. One term you may come across in shopping is gunite. These types of pools are the preferred choice among many pool constructors for several reasons.

What Is Gunite?

Gunite is a specially formulated concrete that is applied with an air compress spray gun. Think of an airbrush for painting. Gunite applications are similar in theory but they spray concrete onto pool walls with the gunite applicator. The gunite provides a certain flexibility in the design of pool walls. It's commonly used for free-form pools that have many curves and irregular shapes.


The gunite materials can be applied with either a dry gun or wet gun. A dry gun utilizes a gunite rig that mixes sand and regular cement together and compresses it for application. The mixture is blown through the dry gun and added with water at the tip of the gun, which applies the concrete to the pool wall. Some pool constructors use a wet gun method instead. This process applies a fiber-mesh additive to the concrete for a better bond. The fiber-mesh is a fiberglass material cut into small strands and added to the concrete mixture.


Gunite pools are sprayed with the concrete mixture onto a rebar foundation. The concrete mends itself onto the rebar. Constructors then trim the pool wall for consistency after spraying the concrete. The thickness of the rebar varies depending on the constructor, pool size and design. The rebar looks like a mesh metal frame that is applied to the pool wall for support. Tiles and other designs can be applied to the gunite after it's finished.


Gunite attaches itself especially well to free-form pools that require shapes outside the traditional oval, round or rectangular pool. Gunite application allows installers to create unique designs instead of installing concrete shells that limit pool owners in design and form. The gunite gun creates it's own concrete shell that can be molded and trimmed as it is applied. Gunite is also used on bridges and tunnels. It's an accepted form of concrete application across many industries.