Water Beading vs Water Sheeting: What Does Protection Really Look Like?by Ian Martinez
There is a lot of confusion out there on what “protected” paint looks like. Often times it is associated with those really high contact angle beading photos, and for good reason. That means there is a strong hydrophobic layer on the paint, which in turn helps with “self-cleaning” where contamination doesn’t stick to the paint as well so water will push it off.
However, beads do not mean good protection. Many things are hydrophobic. Oil, for example is extremely hydrophobic, you could slather some coconut oil on your paint and get some insane beading photos. Obviously that wouldn’t provide good protection, wouldn’t last and would attract dirt like crazy. Hydrophobic means a tendency to repel water, thus creating the beads. Most car protections bead water as it is common sign of protection.
Then, there is water sheeting. This is where a surface is more hydrophilic, an attraction to water, so the water has a very low contact angle, yet the water glides off the paint in large “sheets”. The thing with a hydrophilic surface is it actually will keep more water off the surface as to create beads there has to be some level of tension holding it in place. These types of coatings are more often used in commercial and medical industries. You can also have a hydrophobic surface that sheets water when the beads come together to form one water mass, think of when you watched the rain drops race on the window when you were a kid and two would link up to form a super water drop so your wins the race. Everyone did that right?
Ok, so what does this all mean? It means that beading does not mean protection but is usually a good indicator. Water sheeting or beading does not mean one is better than the other. You want solid protection and depending on the chemical formulation the surface makeup may be one or the other. As long as the protection does not easily wash away and makes the paint easier to clean, you know you have good protection. then the longevity of it is what makes it even better. This is why coatings are so popular, and expensive. Automotive paint protection is the resistance to UV rays, chemicals, etc over an extended period of time, not the ability to rain or disperse water.
See below the left photo is a surface that is sheeting water where the left is beading water. On a horizontal surface it may look like the left has no protection.
When turned vertical all of the liquid on the left glides off the surface leaving it dry, where the right is still holding tension of the beads.
I operate a mobile detailing business and have done so for over 12 years. I have one employee and we detail 20 cars a week.
I came across BLACKFIRE paint protection a few years ago and love how easy it is to apply and how much it does bead.
Every new customer I contact with gets the story on how well this wax protects and beads up.
Your article reinforces everything, keep up the great work
Watson’s mobile auto detailing
What would be your recommendation for great sheeting products?
Most ceramic coatings sheet very well! I like to use the Gtechniq line
I plan to decontaminate and correct my 2015 Toyota Corolla and wipe it down with IPA before I add gtechniq CSL and EXO V4! This spring im also going to use Meguiars panel wipe as my IPA!
So I take it between sheeting & beading, sheeting is best…So how do the spray ceramic’s do, such as Mothers, Meg’s, Turtle wax spray on ceramic’s? Yeah IK they aren’t like the ceramic coatings, but I’d think they’d be one step above sealants.
One is not necessarily better than the other, it’s just that the absence of beading does not mean there is no protection as many people think. I haven’t used any of the ones you mentioned but something like CarPro HydrO2 sheets like crazy
Thanx for the feedback…….
May be s year later but it done hurt to share. So I’ve been running through a number of ceramic sprays recently and find that not many of them actually water sheet. Even so none of then describe it on the bottle they all mention beading….. My issue occurs when the water has dried and I come out the following day, whether it be rain or me rinsing, to find nothing but little dots all over my car…. They are a pain to remove too… I never had an issue prior to using any detailing products either….. The bead stay on everywhere, even the most vertical surfaces and cause issues when looking through the glass because they stay there when driving…. Its a dark blue almost black car. Help a guy out with a solution. Thanks and good read.
Try the five star shine! It has a complete kit for 89.00. Yes, it’s worth every penny. I am not affiliated with them in any way,, just a satisfied customer. I think you can buy it on Amazon as well..
dr beasleys LS10 is a good sheeting coating…..and ape details hydrasheet is also
What is the beat sheeting product besides the ceramic coats? Sheeting is better than beading, if the water remains in the panels it will stain no matter what, what wthe best product to make thise panels sheeting all the water?
dr beasleys LS10 ……brians(apex detail) rehydrasheet…
I personally have great experience with sio2 based sealants like the Gtechniq C2V3 or CarPro Reload. Generally ceramic coatings are not great with sheeting, but they do a great job protecting the paint overall. Sio2 based toppers will help add protection, gloss, and sheeting properties.
Nice I’m just going with exo V4 from Gtechniq to use with CSL together