What would be a typical sd-value for an oil coating on hardwood?
Should rain absorption be turned off (as per the warning message)?
Effect of oil coating on hardwood
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Christian Bludau
- WUFI SupportTeam IBP
- Posts: 1130
- Joined: Tue Jul 04, 2006 10:08 pm -1100
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Re: Effect of oil coating on hardwood
Hi David,
I have no information about typical sd-values for such coatings. Maybe you can ask a manufacturer.
If you want to set the coating as a sd-value in the boundary conditions, you have to switch off the rain, as the sd-value only has an impact on the vapor diffusion. So rain may be absorbed by the material below, but drying to the outside will be reduced, as this is a diffusion process.
Probably the coating will influence the sd-value as well as the liquid water absorption, so if you get values for both, you can adapt that in the calculation as described in our tutorial about the water-repellent treatment.
https://wufi.de/en/service/downloads/#w ... _treatment
Christian
I have no information about typical sd-values for such coatings. Maybe you can ask a manufacturer.
If you want to set the coating as a sd-value in the boundary conditions, you have to switch off the rain, as the sd-value only has an impact on the vapor diffusion. So rain may be absorbed by the material below, but drying to the outside will be reduced, as this is a diffusion process.
Probably the coating will influence the sd-value as well as the liquid water absorption, so if you get values for both, you can adapt that in the calculation as described in our tutorial about the water-repellent treatment.
https://wufi.de/en/service/downloads/#w ... _treatment
Christian
Re: Effect of oil coating on hardwood
Hi Christian
Thank you - that is helpful.
Thank you - that is helpful.