Glass Block Technology has a range of fire blocks available. Fire blocks are generally used in areas where fire ratings are an issue for example fire escape routes, apartment common areas, separation of kitchen to living areas & third storey loft conversions.

Glass Blocks fire tests are measured in increments of 15 minutes. A general guide to the definition between Fire Integrity & Thermal isolation.

Fire resistance is concerned with four criteria:

(a) Mechanical Resistance - the glass block wall must stay upright without too much damage following testing
(b) Thermal isolation
(c) Imperviousness against blaze
(d) No flammable emission during testing.

These tests are recorded in 15 minute increments.

Definition
Fire Integrity (G-category glazing)
The glass block wall must pass Test (a) above.

THERMAL ISOLATION (F-category glazing)
The glass block wall must pass all four of the criteria above (a-c).

Glass Block Technology Precast Fire rated panels are manufactured in accordance with the glass block manufacturers test & certification data.

Different fire rating requirements mean variations in construction
of the panels from the blocks used, quantity of vertical & horizontal stainless steel reinforcement to joint sizes or border widths.

Panels can be manufactured in single or connecting pieces dependent on the size required and should be restrained in place ideally with steel.

	60 / 15: La Rochere clear 190x190x80 glass blocks when installed in accordance with Glass Block Technology’s Rods & Mortar system achieve certification for 1 hour fire integrity & 15 minute thermal isolation. This higher fire rating is achieved due to the purity of La Rochere glass blocks that will only fuse at a higher temperature of around 1550°C.
	120 / 30: Weck 190x190x100 SHS security glass blocks achieved a G120 minute integrity & F30 minute thermal isolation fire rating. Other patterns available in fire rated ranges. *F30 190x190x100 is a specialist block differing from standard 190x190x100.
	For higher fire ratings of G 60 minutes fire integrity & G 60 minutes thermal isolation, contact Glass Block Technology Precast department - Glass Block Technology Precast Department: 0161 612 6893 - precast@glassblocks.co.uk

	Precast Fire Blocks
	Glass Block Technology Precast Fire rated panels are manufactured in accordance with the glass block manufacturers test & certification data. Different fire rating requirements mean variations in construction of the panels from the blocks used, quantity of vertical & horizontal stainless steel reinforcement to joint sizes or border widths. Panels can be manufactured in single or connecting pieces dependent on the size required and should be restrained in place ideally with steel.
	BORDERS AND CLAMPS Precast Concrete Fire Rated Panels are always manufactured with perimeter borders as a requirement under fire certification and also designed to assist with clamping panels in place as shown. EXPANSION FIBRE Expansion material is crucial for fire rated panels. This example depicts a 60/30 panel which requires a minimum 20mm perimeter expansion joint. Mineral fibre can be used or two lengths of GBT 10mm expansion foam doubled up (head and jambs). 2 No. bitumen strips to the base also siliconed over in a fire Stop silicon. ARCHITRAVE Where the precast panel meets the perimeter opening, the join has been decoratively finished by an architrave moulding.
Datasheets /Downloads Available   Click to download the Weck Fireblock Brochure Click to download the La Rochere Fireblock Brochure Click to download Adobe Acrobat Reader   Download tips: You can view a full list of downloads in the Glass Block Technology Downloads Section.