Evidence hierarchy

Product-specific facts begin with the current technical data sheet, safety data sheet, installation instructions, and official manufacturer support material. Broader material and safety questions draw on recognized standards, industry bodies, government agencies, and peer-reviewed or technical literature.

What happens when sources disagree

We check product identity, document revision, units, test method, substrate, thickness, cure conditions, and exposure. A conflict is recorded rather than resolved by selecting the most commercially attractive figure.

Current phase: this section is intentionally small while historical URLs are recovered and the publication architecture is reviewed.

Read the editorial standards or see how evidence is applied to product coverage.