How We Review Products

Most detailing roundups lead with “we tested” and hope you don’t ask how. We take the opposite approach: we state plainly that we have not physically tested the products we compare, and we compete on a method that doesn’t need a lab — reading each product against its published specs, transparently and reproducibly. If you followed our steps with the same spec sheets and the same math, you’d reach the same conclusions.

1. We start from the published specs, not the marketing

Every product is evaluated on what the manufacturer and the listing actually state: the key spec (SiO2 content, PSI, throw, tank size, dilution ratio), the size, the format, and the coverage or yield. Each of those facts is read from the product listing on a dated visit, and that date is shown on the page. Where a brand does notpublish a figure — which is common — we print “Not published.” That empty cell is a finding, not a gap in our research: a brand that won’t state its SiO2 percentage or its dilution is telling you something.

2. We do the coverage and cost-per-use math

This is the whole point of the site, and the thing no competitor does. For consumables — wash soap, wheel cleaner, tire dressing — we take the manufacturer’s stated dilution or coverage, and divide the current live priceby the number of uses per bottle to get a cost per wash, per coat or per application. The dollar figure is computed at render time from the live price, so it’s honest arithmetic, not a number we typed — and when there’s no live price, there’s no figure, just the coverage. A $28 bottle that makes forty washes is cheaper than a $12 bottle that makes ten, and we show the division so you can check it.

3. Rankings are argued, not scored

You will not find a numeric “9.2/10” anywhere on this site. A score implies a measurement, and we haven’t measured these products in a controlled test — slapping a number on a spec sheet would dress reading up as testing. Instead, our rankings are reasoned in plain language: which product suits which buyer, why one wins for beginners and another for enthusiasts, and where the buyer-first choice is the cheaper option. That means an occasional “skip this”pick — which is exactly the honesty signal the field is missing.

4. Prices are live and dated — or they disappear

Every price on the site is pulled from a live retailer feed and stamped with the date it was pulled. We don’t store prices in our content, so a stale number can’t sneak onto a page. If the daily price check stops running, the numbers expire on their own within 48 hours and the buttons fall back to “Check price on Amazon” — the failure mode is silence, never a wrong figure.

5. We never fabricate proof

There are no invented reviews, testimonials, star ratings, or before-and-after photos anywhere on Clay & Coat. Product images come from the retailer. Verdicts are ours, written from the published specs. If we can’t source something honestly, it doesn’t appear.

6. Commission never decides a recommendation

We earn affiliate commissions, and we disclose them everywhere they apply. But the reasoning behind a pick is identical whether a link earns us anything or not. When a cheaper product beats a pricier one for the buyer, the cheaper one is still our pick. Read the full affiliate disclosure for how that stays honest.

Where we could be wrong

Reading specs is not the same as long-term testing, and we don’t claim it is. Formulas get reformulated, individual results vary, and a stated coverage figure isn’t the only thing that decides how a product performs in your driveway. Treat our guidance as well-researched, honestly-sourced buying advice — not a verdict from a lab. If you find an error, tell usand we’ll correct it in the open, and note that we did.