Cathedral roofs are vulnerable to snow accumulation, and because of the
limited airspace, the warm air that escapes and penetrates into the
attic space mixes fast with the cold air, thus creating
condensation, moisture, mould, mildew and more. The only ventilation
system available was the low profile ridge vent. Being a passive
vent, they do not allow for air exchange but merely release the hot
air that rises to the peak. Because they sit low on the peak of the
roof, snow covers them after the first snowstorm rendering them
obsolete.
| Maximum Ventilation has introduced a new and unique
static ventilation system for cathedral roofs which removes
the stale air and moisture out from between each rafter, up
into the insulated duct and out through the ventilators
replacing it with fresh new air which enters through the
soffits. The ducts are sealed onto the roof making them
storm proof under any weather conditions, thus giving you a
system which will function year round, giving the homeowner
a peace of mind. |
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The Maximum Cathedral Roof Ventilator
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Item |
Type "A" |
Duct
Made of 24 gauge galvanized steel. The duct is insulated,
painted and perforated on it's sides so as to facilitate its
fixation to roofs deck. Each section measures 48” long, but
2” are used to overlap the next section thus leaving 46” per
section.
N.B. The slope of the roof is required to order this
product. |
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Ventilators
For standard residential buildings, a Maximum ventilator
is installed for no more than 20 feet of duct. The distance
between the ventilators may need to be reduced for building
which exceed the size of standard residences. |
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Adaptors
The adaptor is used to connect the ventilator with the
duct. One adaptor is needed per ventilator and the adaptors
are all insulated, painted and perforated. |
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End Caps
The caps are used to close off the extremities of the
duct and each unit is composed of two pieces. Two caps are
usually needed per installation. |
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Download a detailed document on the Cathedral Roof Ventilator
