Specifications

12
Problem Description Can Occur when.. Possible Solutions
The wind is creating a
downdraft
Wind induced downdraft is
a common draft problem
– and often it’s only
occasional. It may only
occur on a windy day
when the wind is blowing
from a certain direction.
Wind induced downdraft is
caused by “eddies” – or ow
patterns around the building
and the chimney.
• The downdraft can be
caused by windloading. This
is a scenario where eddies,
or ow patterns, create an
unfavorable draft condition.
When the wind hits one
side of the building it tends
to create a positive pres-
sure on this side (windward
side). This is balanced out
by a negative pressure on
the opposite side (leeward
side). This phenomenon can
create pressure changes
inside the building which
can adversely affect
replace operation.
• This is often experienced
at oceanfront or lakefront
properties and ones located
in mountainous areas.
• Install a chimney cap
• Extend the chimney
beyond the eddy
• Install a mechanical draft
system