Helpful? 0

Roof venting

We are building a 3/12 shed roof with parallel trusses North of Ottawa (zone 6-7). The roof is sloping to the South. We're wondering about potential for venting problems during winter with North and NE winds, as we think the wind catching the North wall will disrupt the normal venting of the roof. The site is fairly protected but these winds will blow on and off throughout the winter.

Asked by jessie pratt
Posted Fri, 11/23/2012 - 10:53

Tags:

1 Answer

Select your preferred way to display the comments and click "Save settings" to activate your changes.
1.
Helpful? 0

Jessie,
As long as your roof assembly is well built -- with appropriate insulation that is installed well, and a ceiling that is fairly airtight -- there is no reason to worry.

If you are depending on the effectiveness of its ventilation layer to keep your roof assembly from failing, something is probably wrong with the quality of your work or your choice of materials. Roof ventilation is much less important than most people think.

For more information on this topic, see How to Build an Insulated Cathedral Ceiling.

Answered by Martin Holladay, GBA Advisor
Posted Sat, 11/24/2012 - 05:27

Other Questions in General questions

Designing a passive solar / net zero house in NC Mountains

In General questions | Asked by bill Moseley | Nov 23, 14

ICF & window areas WITHOUT wood bucks

In Green building techniques | Asked by Peter L | Nov 22, 14

Heat Pump Water Heater in conditioned space

In Mechanicals | Asked by Gerald Blycker | Nov 24, 14

Rigid polyiso in side attics?

In Green building techniques | Asked by Ryan Griffin | Nov 22, 14

Polyiso on interior

In GBA Pro help | Asked by William Lucrisia | Nov 21, 14
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!