Ok so i had everyone from the main office in NEW JERSEY get in here and read the post and this is what they sent me.
Here are some things to consider when applying Floor Armor:
· Loss of adhesion: in the pics, there were a couple spots where there was an adhesion loss. Since the loss of adhesion occurred in specific spots that clearly indicates an area that either was not properly prepared or was wet. If there was a problem with the batch, then there would be zero adhesion anywhere on the surface plus there are thousands of gallons of that batch out there that would have failed too.
· Regarding surface preparation, the foundation of any coating system is the surface preparation. It is the most important factor in success. The purpose of surface preparation is to remove all contaminants that can interfere with adhesion and to promote a mechanical bond. Perhaps there is a sealer or grease stains not properly treated or dampness? Floor Armor is designed to penetrate into the concrete and when cured have a mechanical bond to the surface. Why is it bonding to some areas and not others? If it is bonding in certain spots, the paint did not decide where to adhere or not. The surface preparation determines that – and not the paint. I know sometimes a customer can get frustrated and when you get personally acquainted with them it is difficult to tell them that the paint does not choose where it adheres or not without sounding like a wise guy. But it’s true though. Keep this in the back of your mind…when a customer says that a product is failing just in a spot but is successful everywhere else (Floor Armor, POR-15, whatever) they are literally telling you the paint has a brain and has consciously made a decision where to adhere the same way you or I would make a conscious decision where to eat dinner.. Sounds silly right? But that is what they are saying but put another way. When paint fails, it fails universally throughout the batch. Keep in mind that flaking or peeling of any paint system is always adhesion loss.
· Moisture: Is the concrete slab on a moisture barrier? If a barrier is not used many times the concrete may appear dry on the surface but is damp and is moist down a bit below the surface thus causing issues with most paint systems. The best way to test for this is to duct tape a 4” x 4” piece of saran wrap to the floor in each corner. Let it sit for, ideally for 72, hours. If there is condensation or a damp odor. The surface is not suited for painting.
pH Levels: On the surface, the pH is highest shortly after the concrete is poured and decreases with time as the surface carbonates. The pH is also related to the moisture content of a slab—concrete with higher moisture levels tends to have a higher surface pH. Cured concrete can go from neutral (pH 7) to highly alkaline (pH 12 or 13). Compare this to using Marine Clean (and no Metal Ready) and then POR-15. You will have adhesion loss (if the surface is not thoroughly rinsed off) because the pH of Marine Clean is high. This is partly why we recommend the use of Metal Ready to bring the pH of the surface down for proper adhesion.
And relating to moisture and pH content is efflorescence which occurs during the initial cure of concrete. It occurs when water is being pushed out of the concrete (this happens very, very slowly) as a result of heat occurring as the poured concrete is curing which brings salts (with high pH levels) to the surface. Efflorescence often looks powdery (white) but is sometimes difficult to spot. This too impacts adhesion because it adversely effects the pH level.
Is the concrete new?. Minimum concrete cure is 30 days at 75° F, however certain conditions can affect the cure rate. The depth of the pour, presence of a moisture barrier, type of concrete, temperature and humidity can all change the cure schedule. If not cured properly, no paint will adhere properly. Concrete also does not cure uniformly, it tends to cure in spots. Again touching on the sealer, some concrete has what’s called a curing membrane which speeds up the cure so the concrete can be walked on during construction but also acts as a sealer. Same issues as a sealer can occur here too.