General guidance only — all construction work must be overseen by a supervising engineer This handbook is compiled from standards and laws with every source cited, andis being reviewed for certification by engineers Use it to know what to look at, what to ask and what evidence to request on site It is not an engineering determination and can't replace an engineer · Terms of use · Limitations of the handbook

Roofing

Rooftop solar panels

Page code P45 · 50 inspection criteria · 3 illustrations

Rooftop solar has two completely separate sides. One is the legal side, which since 19 November 2025 has only one condition left: weight. The other is the workmanship side, for which there isn't a single Thai standard, and that's the side that actually fails — the poin…

This page contains
The only condition left — and three that were just cancelled
The law stopped requiring three things — but the roof still has to carry the load
Can the existing roof carry it? — the question to answer before choosing a brand
The point that fails most often — holes drilled in the roof to fix the panels
Dealing with the electricity authority — on this, the book can only tell you whom to ask
Installation day — what to see with your own eyes
Documents you must get, and the warranty you must read

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