Epoxy Glossary for Beginners – Terms and Definitions for Garage Flooring

Aggregate

The current air temperature and weather conditions.

Ambient Temperature/Conditions

The current air temperature and weather conditions.

Back Rolling

The process of using a paint roller to create a smooth, even finish, after distributing the material with a squeegee.

Blush

An oily residue on the surface of an epoxy floor after curing, it is usually caused by high-humidity or condensation.

Broadcast

The process of distributing flake or another aggregate into the wet material.

Compressive Strength

Describes the materials resistance to weight or impact.

Concrete Surface Profile (CSP):

A measurement of the roughness of the concrete surface to be coated. Coatings require a textured-profile in order to form a strong bond with the concrete.

The International Concrete Repair Institute defines these from CSP-1 to CSP-9. CSP-1 has almost no texture, and CSP-9 has a very coarse texture.

Professional garage floor systems typically require a CSP-3, achieved by diamond-grinding or shot-blasting. Acid-washing is only capable of achieving a CSP-1 profile.

Cove Base

A transition that is installed where the floor meets the walls, allows a seamless transition of the coating from the floor, up the wall a specified distance (usually 4″-6″).

Cutting In

The process of applying material around the edges, and details with a paint brush or small roller.

Film Thickness

Describes the thickness of individual coats of material, or the entire coating system. 

Wet Film Thickness (WFT): The thickness of the wet material when it is first applied.

Dry Film Thickness (DFT): The thickness of the coating once it is fully-cured, and all solvents or reducers have evaporated. 

Fish Eye

Round separations or blisters in that form when the material is wet, usually caused by surface contamination. Their appearance resembles the eye of a fish.

Full-Broadcast

A complete saturation of the wet material with flake or aggregate. Also known as “Broadcast to Rejection”, “Full-chip”, and “Full-Flake”.

Laitance (Cream)

Found on the top surface of the concrete, it is a layer composed of fine sediment and residue left as the water evaporates from the concrete as it dries. We wish to remove this weak, non-durable layer during the surface preparation process.

MSDS or SDS

Material Safety Data Sheets are documents containing detailed health & safety information about each particular chemical or product used.

Moisture Vapor Transmission Rate (MVTR)

A measure of how much water is passing through, and out of the concrete slab.

Neat Coat

A coating, or single-coat of material, that doesn’t contain any aggregate.

Out-gassing

Can describe trapped air that is escaping from within the slab, through the coating.

Also describes gasses that are formed as the coating undergoes the chemical reactions, that are either released from, or become trapped in the coating. 

Pot Life

The amount of time the material will remain fluid in the bucket, once it has been mixed.

Pre-Conditioning

Allowing the materials to adjust to a certain temperature before it is installed.

Re-coat Time

The amount of time the material must cure before the next coat can be applied.

Retaining Walls

Concrete footings underneath the walls of the room, typically around 12″ to 48″ tall. They are usually found when the home is bermed into a hillside.

Shot-blasting

An alternate method to Diamond-Grinding, it uses a machine that sprays the surface of the concrete with small steel shot, with a lot of force. It removes the very top layer of the concrete, removing contamination and leaving a textured surface.

Stem Walls

A short, concrete footing underneath the walls of the garage. Because garage floors typically have slope to allow for drainage, the stem walls provide a level base for the walls of the room to sit upon.

Substrate

The surface to which the coating is applied, in this case the concrete garage floor.

Surface Profile

A texture on the surface of the concrete, created by diamond-grinding or shot-blasting. It allows the coating to form a significantly stronger bond with the garage floor.

Tensile Strength

Describes how much the coating can stretch (elongate) before it breaks or tears. 

Viscocity

Describes the “thickness” of the liquid material, such as epoxy. For example, Molasses has a high-viscosity.

Working Time

The amount of time from when the material is mixed until it can no longer be worked with.

Read the Frequently Asked Questions to learn more!

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