What Happens During an EHCI Exam? A First-Timer's Honest Review

I'll Be Honest: I Was Nervous

I've been installing decks for eleven years. Cedar, PT lumber, composite, and for the last three years, a lot of tropical hardwood. When a supplier told me about EHCI certification, my first thought was "I don't need a test to tell me I know what I'm doing."

My second thought, after looking at the curriculum outline, was "Wait, I might not actually know all of this."

So I signed up for Level 1.

The Study Materials

The course modules are well-organized and honestly more detailed than I expected. I've been to manufacturer training sessions—they're basically product pitches with coffee. This was different.

The wood science section alone taught me things I'd been getting wrong for years. I didn't fully understand tangential vs. radial shrinkage and how that affects board orientation. I'd been installing boards growth-ring-down based on something I read on a forum years ago. The correct approach is more nuanced than that, and the modules explain why.

I spent about two weeks going through the material, usually 30-45 minutes in the evening. It's not a massive time commitment.

The Exam Itself

The exam is timed—60 minutes. Questions are multiple choice, pulled from a randomized pool, and weighted by category. You need a 70% to pass.

Some questions were straightforward if you'd done the reading. Others required you to apply concepts to scenarios. For example: "A client in Miami wants a deck elevated 4 feet. The lumber arrives with 16% MC. What's your recommendation?" You need to think through climate, acclimation, structural implications, and species behavior to answer correctly.

I finished in about 40 minutes and scored 84%. I missed a few questions in the fastener metallurgy section—turns out I didn't fully understand the difference between 304 and 316 stainless in coastal applications.

What Surprised Me

The exam doesn't reveal which answers you got right or wrong. At first I thought that was annoying. Then I realized it's smart—it protects the integrity of the question pool. You know your score and your weak categories, but you can't just memorize answers and share them.

The other surprise: I actually learned things that changed how I work. The drainage and ventilation module alone probably saved me from a callback on a project I was about to start.

Was It Worth It?

Absolutely. I now have my certificate ID, I'm in the directory, and I've already had two leads come through from homeowners who found me there. More importantly, I'm a better installer than I was a month ago.

If you've been on the fence, just do it. The worst case is you learn something.