The level of fire classification required in glass block applications will always be a condition of building regulations or building control. The fire ratings required are wholly dependent on the location or area of use. Architect specification should ensure all aspects of the project are considered in line with approval.
TF blocks can be used internally or externally. Common applications are areas such as fire escape routes, areas within apartment dwellings, corridors, where a private space is adjacent to a communal area, external boundary or perimeter walls, loft conversions or garages or in close proximity to other buildings or public highways.
Fire ratings explained – specific to glass blocks
There are two specific areas of criteria: fire integrity and thermal isolation:
The 190x190x80 and 100mm La Rochere (standard) glass blocks achieve 60-minute integrity and 15 minute thermal isolation.
The La Rochere TF range comprises:
|
Standard 190x190x80mm |
TF30 190x190x100mm |
TF60 190x190x150mm |
---|---|---|---|
Light Transmission |
81% |
78% |
76% |
U-Value |
2.90 W/m2 OC |
1.94 W/m2 OC |
1.60 W/m2 OC |
Fire Rating |
60 mins / 15 mins |
60 mins / 30 mins |
60 mins / 60 mins |
Compressive Strength |
18.0 N/mm2 |
18.0 N/mm2 |
18.0 N/mm2 |
Weight / Block |
2.4kg |
4.0kg |
6.0kg |
Impact Strength | 12.0 N/mm | 12.0 N/mm | 12.0 N/mm |
Sound Transmissions | Rw = 42dB |
Rw = 48-53dB |
Rw = 48-53dB |