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Why You Should Always Request an LM-79 Report with Your Lighting Design

Let’s start with something we see far too often. You receive a lighting design that looks flawless on paper, ideal light levels, great uniformity, and maybe even a surprisingly low cost. But once it's installed? The performance doesn’t match the promises. Light levels fall short, shadowing appears where it shouldn’t, and compliance issues creep in. What went wrong? Most of the time, it comes down to one thing: unverified photometric data. That’s why every lighting design should come with an LM-79 report. No exceptions.

6 min read | 19 May 2025