Refurb & Restore Issue 42 2025 | Page 83

www. firmanglass. com

PYRAN ® S

For fire resistance and protection of people and property
Multifunctionality in fire protection
PYRAN ® S is a pre-stressed, monolithic borosilicate single pane safety glass in accordance with EN 13024-1.
As a component in fire-resistant glazing that meets the requirements of resistance classes E 30, E 60, E 90 and E 120, it has proven its outstanding optical and mechanical charac teristics over the years in a wide variety of buildings.
Areas of application
PYRAN ® has been internationally approved and ideally suited for:
• Facades
• Partition walls
• Skylights and rooflights
• Doors

Now available for UK manufacture

• Roofs
• Smoke screens
• lift door glazing
• lift shaft glazing
Facts
• Higher ability to withstand temperature differentials: In comparison to soda-lime glass, tempered borosilicate glass can better withstand temperature differentials and can therefore be glazed with normal edge covers( 20 ± 2 mm).
• Higher softening temperature: Because the glass is selfsupporting for more than 30 minutes, large panes and simple frame construc tions are now possible.
• Higher viscosity: The glass flow rate is low due to the high viscosity and durability of borosilicate glass, so with more edge cover, grea ter fire resistance times in excess of 90 minutes can be achieved.
• NiS crystals do not form: Due to the chemical composition of bo rosilicate glass, nickel sulphide crystals cannot form. Spontaneous glass fracture due to embedded NiS crystals cannot happen with PYRAN ®.
Further information is available from our sales and technical offices or visit www. firmanglass. com
Tel: 01708 374534 Email: Pyran @ firmanglass. com
Firman Glass, 19 Bates Road, Harold Wood, Romford, Essex RM3 0JH www. firmanglass. com