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Frequently Asked Questions |
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TRADICAL® HEMCRETE® WALLS
Material Selection
Q: Does Tradical® Hemcrete® have a warranty?
A: Tradical® Hemcrete® carries a
manufacturers warranty covering the
replacement of any defective material. The
contractor or sub-contractor installing the
Hemcrete® would warranty the work (subject
to the conditions of the contract used).
Q: Does Tradical® Hemcrete® have an Agreement Certificate?
A: The process of applying for a BBA certificate
has been started and it is expected that the
certificate will be issued in 2008.
Q: Is Tradical® Hemcrete® approved by the NHBC or the Zurich insurance schemes?
A: Tradical® Hemcrete® is approved by Zurich
Insurance and complies with their low and
zero carbon housing technical standards.
Q: How much does it cost to build with
A: Tradical® Hemcrete® ?
Cost obviously depends on scale and
design, however spray applied Tradical®
Hemcrete® is comparable with conventional
construction costs. Please see Economics
section.
Q: Is Tradical® Hemcrete® available as prefabricated panels?
A: Yes, prefabricated panels are available
from Modcell Ltd (07711 081262). Typically
3m x 2m.
Q: Can Tradical® Hemcrete® be used in the
A: renovation of old buildings?
Yes, Tradical® Hemcrete® can be used to
form infill panels for historic timber framed
buildings. It can also be use as an insulating
plaster or render system for the thermal
upgrading of masonry buildings. These
applications will be launched in the near
future.
Q: What is the thermal conductivity of
A: Tradical® Hemcrete® ?
Typically the thermal conductivity
is 0.09W/m2.K
Q: How high can a building of Tradical®
A: Hemcrete® be designed?
The Hemcrete® is not load-bearing, so the
limitation is only on the structural frame.
Q: How much CO2 is locked up in Tradical®
A: Hemcrete® ?
Spray applied Hemcrete® locks up around
110kg of CO2 per cubic metre.
Shuttered and cast Hemcrete® locks up
around 110kg to 165kg of CO2 per cubic
metre, depending on the level of compaction
during construction.
Q: Does Tradical® Hemcrete® breathe?
A: Yes. The word breathability is often used
to describe Hemcrete® buildings. There
are various ways in which materials deal
with moisture (water vapour permeability,
capillarity and hygroscopicity). Tradical®
Hemcrete® performs well in all these
areas in order to provide a healthy internal
environment.
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