Moisture Safety in Cold Attics with Thick Thermal Insulation
Author
Editor
- A. Baskaran
Summary, in English
There can also be disadvantages with ventilation. The wind pressure against the building can sometimes cause a negative pressure in the attic, which increases the moisture convection from the living space into the attic. During clear cold nights the heat radiation from the roof into the sky could lead to that the temperature at the inner side of the roof gets lower than outside, which increases the risk for condensation or high relative humidity.
This paper presents field measurements and results from four different concepts to increase the moisture safety in cold attics. Attics with reduced ventilation, internal heat source, thin thermal insulation of the outer roof, and reduced ventilation combined with new types of underlay with reduced resistance to moisture flux are discussed and compared with calculations and a reference house.
Department/s
Publishing year
2010
Language
English
Pages
403-404
Publication/Series
[Host publication title missing]
Volume
2(2)
Document type
Conference paper
Publisher
National Research Council Canada
Topic
- Building Technologies
Keywords
- insulation
- attics
- moisture safety
- measurements
Conference name
International Conference on Building Envelope Systems and Technologies
Conference date
2010-06-27 - 2010-06-30
Status
Published