SIMFY FIRESYS

EN 13501-1 Reaction to Fire Classes A1 to F Explained

What A2-s1,d0 actually means. The EN 13501-1 classes A1 to F, the smoke and droplet codes, the fl and L subscripts, and how to check a…

August 28, 2026Read more →

SIMFY FIRESYS

Fire Dampers: What EN 1366-2 and EN 15650 Cover

Sourcing fire dampers? Why EN 1366-2 is a test method and EN 15650 the product standard, what ve, ho and S mean, and what the enquiry…

August 28, 2026Read more →

SIMFY FIRESYS

Structural Steel Fire Protection: How Thickness Is Set

Buying intumescent coating for a steel frame? How section factor, critical temperature and EN 13381-8 tables decide thickness, and what to send before quoting.

August 28, 2026Read more →

SIMFY FIRESYS

Fire Collars and Pipe Wraps: What the Test Covers

Sourcing fire collars for a project? What EN 1366-3 really tests, why U/U and U/C decide whether your certificate applies, and what to check before ordering.

August 28, 2026Read more →

SIMFY FIRESYS

How to Specify Firestop in a Tender That Holds Up on Site

A firestop specification fails when it names a product instead of a performance. How to write the classification, evidence and substitution clauses properly.

August 28, 2026Read more →

SIMFY FIRESYS

Intumescent Sealant: How It Works and Where It Belongs

Intumescent sealant swells under heat to close a gap. See how it differs from ablative and acrylic, and why its EI rating only holds in a…

August 28, 2026Read more →

SIMFY FIRESYS

Fire Stopping Explained: Products, Tests and Ratings

Fire stopping explained for buyers: penetration seals, linear gap seals, which test applies, and why a firestop rating belongs to a tested system.

August 28, 2026Read more →

SIMFY FIRESYS

Passive Fire Protection: Systems, Ratings and Tests

Passive fire protection explained for buyers: what EI ratings mean, which test applies to each product family, and why a rating belongs to a tested system.

August 28, 2026Read more →