United Shotcrete contractors are  American Concrete Institute (ACI) certified shotcrete nozzleman. We carefully vet every contractor we hire to ensure they have the training and certification necessary to perform any residential or commercial shotcrete job.

Shotcrete is concrete. The difference between shotcrete vs. cast-in-place is in the application.

Shotcrete applications use a nozzle to project concrete at a high velocity on a horizontal, vertical or overhead surface. The result is a much stronger bond of concrete with a substrate that lasts for years.

In the shotcrete method, the applicator uses either a dry-mix or a wet-mix. The difference between these two methods is that the dry-mix, otherwise known as gunite, adds water through the nozzle, while the wet-mix adds water to the mixture before it reaches the delivery hose. 

The cast-in-place concrete method – also called the poured-in-place concrete method – is a method that involves pouring the concrete mixture onto the required place. It is a technique taken in situ or the concrete component’s position. The concrete is transported to the desired place using a concrete mixing truck that puts the concrete into the desired location or the dumper.

A shotcrete mixture exceeds the compressive strength of most mixtures used for placed walls because the application of shotcrete requires a much lower water-cementitious material ratio than commonly found in wall mixtures.

We service most of the Mid-Atlantic and the North of the United States, including these and other states.

• Maryland
• Virginia
• West Virginia
• Philadelphia
• New York
• New Jersey
• Washington, DC.
• Pennsylvania
• Delaware