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If you have a question on the PyroLac range, please
consult the list below, or use the enquiry form to
contact us.
1. What is PyroLac PrO / PyroLac One?
PyroLac PrO is a fire retardant lacquer system which
has been certified to maintain and upgrade to a Class
0 rating under BS 476 Part 6 Flame Propagation.
PyroLac One is a flame resistant lacquer which is
certified to maintain and upgrade to a Class 1 rating
under BS 476 Part 7 Surface Spread of Flame.
2. What does BS476 Part 7 / Part 6 mean?
BS 476 is a fire protection standard for wall panelling.
BS 476 Part 7 Surface Spread of Flame refers to a
test which assesses how widely the flames are able
to spread. The highest certification rating for this
is Class 1.
If Class 1 is achieved, the product can then be tested
under BS 476 Part 6 Flame Propagation, which assesses
how well the coating works on the substrate as an
intumescent by producing bubbles of gas to extinguish
the flames. The highest rating in this test is Class
0.
3. What can they be used on?
PyroLac PrO and PyroLac One are certified for use
on new, uncoated wall panelling (under BS 476), but
can also be used to offer fire protection on all other
interior wood, including staircases, interior windows
and doors, furniture and mouldings.
4. How can I be certain it will provide Class
0 or Class 1 on my substrate?
The BS476 Part 6 and Part 7 tests only apply to wall
panelling, so you can only achieve Class 1 or Class
0 for wall panels. To be certain that the lacquer
offers the rate of protection required, your substrate
must be tested with the lacquer. This is the same
for all lacquers, whoever the manufacturer.
5. Some products claim to offer Class 0 on
all substrates. Can yours?
Both parts 6 & 7 assess whole system performance
& a pass certificate is awarded based on the specific
components used, including; lacquers (basecoats, stains,
topcoats etc), veneer, adhesive and substrate.
If certification is required for a specific substrate,
or if one of the system components is altered, the
whole system MUST be tested. Without this, the lacquers
can be used but they will be referred to as an uncertified
system, offering a degree of flame resistance / retardancy.
In the UK, and most of Europe, there is no cover-all
certificate for all wood and board constructions.
6. An architect has specified Class 0 lacquer for
a staircase – is this suitable?
Class 0 relates to BS 476 Part 6, which is a test
for wall panelling. There is currently no test for
any other interior wood substrate, or the lacquer
itself. Our lacquer has been tested to reach Class
0 on previously uncoated veneered Class 0 mdf, with
a flame resistant adhesive.
The product is suitable for use on staircases, however
the Class 0 rating does not apply. In this example,
it is referred to as a fire retardant system.
7. How are the products applied?
All products are applied by professional spray application.
8. What is the PyroLac PrO system?
PyroLac PrO consist of three products; a waterborne
flame resistant basecoat, waterborne intumescent lacquer
and a solvent-borne flame resistant lacquer. These
three products combine to give a Class 0 rating under
BS 476 Part 6.
Note: This classification is substrate dependent.
Check with our technical service department for advice.
9. Why do I need a certificate of supply?
The certificate of supply confirms that the correct
amount of product was purchased for the particular
application. In a fire situation, the fire retardant
could be critical in allowing people more time to
escape the building, so it is vital that it is applied
correctly.
10. What quantity is it available in?
All products are available in 5 litre tins, for ease
of use.
11. Who is able to test?
There are only a few approved test houses in the UK.
For further information, contact our technical service
department.
12. What are the obligations to re-test?
There are no legal obligations to re-test. However,
formulations are reviewed after 5 years and a recommendation
to re-test after 10 years. Becker Acroma feels this
is not sufficient and will re-test every year.
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