Product Standards - Flameshield Fireduct is Fully Compliant with BS EN 1366
Flameshield Products have been fully tested in accordance with BS EN 1366 Parts 1 & 8 with
compliance in all standards.
Many fire rated ductworks claim to be compliant with these standards yet in reality tests have
only been undertaken against certain parts of the standards. The innovative Flameshield Fireduct
is the leading fire rated ductwork with compliance in all standards, ensuring complete peace of
mind with all current building regulations, maintaining the upmost quality and reliability.
The EN 1366 standards go beyond BS 476 with more scenarios and criteria to meet. See below for
the test scenarios Flameshield have performed successfully for:
EN 1366 Parts 1 & 8
There are three different test scenarios, duct A, duct B and duct C. Unlike the test standard for
BS 476 Part 24 the EN 1366 test standards require larger sizes not covered by the standard,
different orientations (horizontal or vertical), and rectangular, circular or flat oval ducts,
are all required to be tested.
EN 1366 Part 1 (Ventilation Ducts)
A standard duct A test is carried out incorporating a duct size of 1000mm x 500mm or 800mm
diameter (whether horizontal or vertical). A successful test for both of these shapes
enables ducts up to either 1250mm x 1000mm or 1000mm diameter to be offered in accordance
with the test standard.
A standard duct B test is carried out incorporating a duct size of 1000mm x 250mm or 630mm
diameter (whether horizontal or vertical). A successful test for both of these shapes
enables ducts up to either 1250mm x 1000mm or 1000mm diameter to be offered in accordance
with the test standard.
A duct A test (fire exposure from outside to inside) MUST meet a leakage criteria (not required
in the BS 476 Part 24 test standards) before being able to be tested in accordance with the
Part 8 and Part 9 (smoke extract) standard.
Any ducts sized in excess of either 1250mm x 1000mm or 1000mm diameter MUST be tested in
accordance with the EN 1366 Part EXAP (Extended Field of Application BS EN 15882-1:2011)
up to a maximum duct size of 2500mm x 1250mm.
The conditions of these tests are:
- Both horizontal and vertical applications MUST be tested.
- ALL shapes MUST be tested.
- Ducts with an external application of insulation MUST be tested for the different
time periods of protection required.
EN 1366 Part 8 (Smoke Extract Ducts)
The rectangular duct size is tested at 1000mm x 250mm and MUST be insulated.
A successful
tested solution for a horizontal duct will also be accepted for ducts in a vertical orientation.
A successful test enables ducts up to 1250mm x 1000mm or 560mm diameter to be
offered in accordance with the test standard.
Any ducts sized in excess of 1250mm x 1000mm MUST be tested in accordance
with the EN 1366
Part EXAP (Extended Field of Application) up to a maximum duct size of 2500mm x 1250mm
however, the EXAP test standard for smoke ducts has not currently been published therefore
larger sized smoke extract ducts CANNOT be tested at this time.
The EN standard is extensive and more onerous than the BS 476 Part 24 test standard as
many more tests are required for full compliance and new specific sets of criteria are
required. As an example, Duct C tests (smoke extract) must retain at least 90% of its cross
sectional area as compared to 75% in a similar BS 476 Part 24 test.
Other Ductwork just doesn’t come close.
To be even remotely comparable to the Flameshield product, other ductworks would have to
pass a minimum of at the very least 20 EN tests - we have carried out 37. Currently, there
is ductwork available on the market that have completed as little as 2 BS tests and
no EN test. Flameshield Fireduct is therefore the No.1 choice for complete compliance.