08/2016
© 2018 Bahama GmbH - Germany
Manufacturer’s Notice to Users # 11/2015:
pertaining to the
Initial physical property of factory-new Bahama Umbrellas and
factory-new Bahama Fabric Membranes
Clarification of the technically inevitable, just limited initial permeability of rainwater:
In the event you experience that the fabric membrane of any factory-new Bahama umbrella structure just
installed and commissioned or the factory-new replacement membrane – contrary to your expectations
– leaks rainwater here and there during the very first showers, or during first rains lasting for hours even
though the umbrella has been unfolded and tensioned properly, you need not be concerned nor feel
obligated or entitled to reclaim a deficiency with the supplier of the umbrella or the replacement
membrane: Your spontaneous complaint or warranty claim would have to be
rejected
since unreasoned.
Why ?
Because the sewn joints in
all factory-new membranes
made of coated polyester fabric cannot be 100-
percent impermeable to rainwater from the very first minute they are exposed to showers or rains lasting
for hours. In particular, permanent rain or sudden showers to which membranes are exposed for the very
first time upon unfolding the umbrella may lead to
limited
no less annoying leakages which, however, are
confined to the sewn fabric joints along the radially allocated arms of the folding frame and to the
concentrically allocated joints within the membrane sections as well. Fabric sections between the sewn
joints will never show any leakage for the reason that the »betex
®
05« fabric material itself is
absolutely
impermeable to water.
As a matter of fact and, provided that the umbrella is kept standing in its unfolded/tensioned
configuration day and night, the phenomenon of initial leakage along the sewn joints will gradually
diminish and will
wholly
disappear eventually. More concretely:
The more intensively a factory-new umbrella (membrane) is kept standing OPEN i.e.
tensioned and thus continuously exposed to weathering (continually wet/dry & cold/warm)
immediately upon first installation,
the earlier
leakages along the sewn joints will disappear.
With particular regard to the aforedescribed phenomenon, it is ”counterproductive” to keep any factory-
new umbrella structure in its folded or refolded configuration (unless public forecast of heavy winds
beyond the published allowable wind velocity limits require precautionary refolding & securing by
harness).
In the context of this notice, it would lead too far to go into the – meanwhile known – micro-physical,
chemical and processional causes for the phenomenon of initial leakage of sewn joints in coated polyester
fabric material. Just one of the manufacturer’s practical experiences should be known to buyers and users
of Bahama umbrellas or factory-new Bahama replacement membranes:
Among ten thousands upon ten thousands, there has
never been one
Bahama membrane that did not
grow absolutely impermeable to rainwater during few days or weeks upon initial installation.
Summary of Contents for Jumbrella
Page 1: ... 2019 Bahama GmbH Germany www bahama de Important Information Jumbrella ...
Page 11: ...Jumbrella Operating Instructions Page 1 ...
Page 12: ...Page 2 ...
Page 26: ...Page 16 ...
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