Folded Homes LiteYurt, Faqs, Page: 69 / 90

Folded Homes FAQs
HOW GREEN IS EXTRUDED PLASTIC?
Although extruded plastic is not biodegradable, it is clean, non-toxic and
recyclable. Over the long run, unless it is protected from the sun’s UV, sunlight
makes it brittle and it disintegrates into a fine powder.
[See A: DISPOSAL (FH YURTS) , PMT: EXTRUDED PLASTIC – WHAT’S
THAT? , and M: EXTENDING THE LIFE OF YOUR SHLETER (FH YURTS) ]
(Created 1/24/2008)
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LIFE EXPECTANCY (FH YURTS)
Folded Homes
®
expects that the useful life of a standard FH Yurt will
substantially exceed the FH Yurt warranty period. [See PD : WARRANTY (FH
YURTS) ] How much longer the FH Yurt will perform satisfactorily is dependent
upon a number of factors: environmental conditions, plastic composition, and
whether additional steps are taken to mitigate the known degradation
characteristics of polypropylene plastic. [See
PD : UV-ENHANCED PLASTIC (FH
YURTS) ]
Folded Homes
®
believes that properly cared for FH Yurt structures can have a
long, multi-year life span.
Environmental Conditions: Since the primary degradation mechanism for
polypropylene plastic is UV-degradation, the amount of sun that the
FH Yurt is
exposed to has a direct impact upon the rate of degradation. A FH Yurt set up in
the middle of the Sahara desert will get more sun than one set up in the woods in
northern Canada. [See PMT:
EXTRUDED PLASTIC – WHAT’S THAT? ]
Plastic Composition: FH Yurt plastic material comes in two flavors; with and
without UV-additives. Use of the latter roughly doubles life-expectancy by
slowing but not preventing the gradual degradation of the plastic. [See
PD : UV-
ENHANCED PLASTIC (FH YURTS) ]
Preventing UV-Degradation: If the sun’s UV can’t get to the plastic, it can’t
degrade it. Any steps you can take to block to UV prolong the life of your
FH
Yurt . [See M: EXTENDING THE LIFE OF YOUR SHELTER (FH YURTS) ]
(Updated 1/22/2008)
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PASSIVE VENTILATION – WHAT’S THAT?
Ventilation results from the pressure difference across an opening. The pressure
difference can be produced mechanically (e.g. by a fan), by the action of wind, or
by temperature differential since warmer air tends to rise and cooler air tends to
fall. Mechanical ventilation systems and wind action are said to produce positive
airflow.
Passive ventilation is ventilation by other than mechanical means. A key benefit
of passive ventilation systems is that they rely upon the ambient energy of the
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