Dear Team,
I am wondering what critical limit IBP use for RH at the IWI/masonry interface for a woodfibre based insulation like Steico, Pavatex, Gutex, Homotherm etc. The (presumed) absence of oxygen should mean that the limit is higher than 80%RH, but do you have a safe limit to work to when assessing the results? Any reference-able material would be appreciated.
I am using the RH assessment in addition to assessing the water content by mass percent of the 5mm woodfibre interface layer for critical levels stated in your training literature of >18-20%
Many thanks in advance for any information
Critical RH limit for woodfibre IWI at masonry interface
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Browne Dan
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Daniel
- WUFI SupportTeam IBP
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RH limit beneath interior insulation
In Germany there are different limits in discussion. The WTA guideline for interior insulations recommends to limt the RH to 95 %.
To avoid mould growth for sure a complete adheseion of the insulation to the substrate is required.
Accoding do Viitanen at 95 % RH and below 10 °C no wood
decay can occur.
best regards
Daniel
To avoid mould growth for sure a complete adheseion of the insulation to the substrate is required.
Accoding do Viitanen at 95 % RH and below 10 °C no wood
decay can occur. best regards
Daniel
Dr.-Ing. Daniel Zirkelbach, Deputy Head of Department Hygrothermics, IBP Holzkirchen
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Browne Dan
- WUFI User
- Posts: 20
- Joined: Mon May 25, 2009 1:12 am -1100
- Location: London, England