Fire Resistance

Airtec blocks provide excellent fire resistance in accordance with the building codes and building regulations. Airtec blocks have been independently tested to the very latest rigorous European Standards and have achieved the best possible resistance to fire rating of “CLASS A1” to BS EN 13501-1 : 2002 (superior to the former BS6073 ‘Class 0’ spread of flame rating). Walls constructed from Airtec blocks comply with Building Regulations Approved Document B, Appendix A, Table A6.
 
 
 
 
 
 
 
 
 
Further guidance can be found in our BBA Certificate 06/4309
 
Airtec walls make ideal fire breaks in both loadbearing and non-loadbearing constructions.
 
A wall constructed of 100mm Airtec can provide up to 4 hours of fire resistance for a non-loadbearing wall and up to 2 hours protection for a loadbearing wall.
 

FIRE RESISTANCE PERIODS

The table below summarises fire resistance periods that can be expected with various Airtec constructions.
 
 
Minimum AIRTEC Block Thickness Required (mm)
for the stated notional fire resistances below
 
 
Wall Type
 
 
Finish
 
 
6hrs
 
 
4hrs
 
 
3hrs
 
 
2hrs
 
 
1.5hrs
 
 
1hr
Loadbearing
(Single Leaf)
None
215mm
190mm
140mm
100mm
100mm
100mm
Plaster
190mm
150mm
100mm
100mm
100mm
100mm
Loadbearing
(Cavity)
None
150mm
150mm
140mm
100mm
100mm
100mm
Non Loadbearing
(Single Leaf)
None
150mm
100mm
100mm
100mm
100mm
100mm
Plaster
150mm
100mm
100mm
100mm
100mm
100mm
Non Loadbearing
(Cavity)
None
100mm
100mm
100mm
100mm
100mm
100mm
 
 
  • The above figures apply to all Airtec grades, 2.9N, 3.6N and 7.3N
  • These figures apply to both Traditional and Thin-Joint mortar constructions
  • Wall ties and anchors must be non-combustible

Download the datasheet here >>>>>  Click here to Download the Datasheet

Back to Top