WUFI

Hi Manfred, I enjoyed the course in December where one of the practical examples we went though included a zinc roof with 'open rebate'. On the day you gave us user defined data to input in the Surface Transfer Coefficient dialogue box. Your inputs: exterior surface Sd-value 25, short wave: 0.4, lon...

[quote="Michael Hurd"]I read the paper on this subject on the website and have a question regarding how to actually model concrete based on the conclusions of this paper. The article states; "the concrete component should be subdivided into two layers: one where liquid transport is po...

Hi Manfred,
Can you identify a traditional lime render/plaster from the catalogues of material for external use? I say this because some may be for internal use and some lime plasters have cement in them.

Regards,
Josephbeag

Hi,
Could someone at the Fraunhofer respond to my original email on this subject?

Many thanks.

Josephbeag

Hi Dan,
I spoke too quick. There are a number of aspects of a WUFI file, such as moisture-related conductivities etc, that the info they gave me doesn't include. I have got onto them to see if they have a full WUFI material file.

Regards,
Joseph

Hi Dan,
I've just got the WUFI inputs for Tradical hemcrete from Lime Technology themselves. Give me a few days and I'll try to export it to you (have top figure that out first too).

Regards,
Joseph

I have the same issue here in the United States... I get the impression that the Regular Lime Stucco in the North American database is perhaps more representative of our plaster here. Hi Michael, Thanks for that. I get confused by the reference to 'stucco': In Ireland this typically refers to histo...

Hi, The Fraunhofer IBP materials database lists four layers for an exterior (lime cement) plaster. Exterior plaster is not installed in four layers in Ireland. I presume the four layers relate to the degree to which the materials calcify (closer to the outside air) and the amount of moisture it has ...

Hi Dan,
I would be very interested in contacting anyone at CAT or Peter Walker at Bath to gain access to data that can be used in WUFI. I would greatly appreciate any and all email addresses and names for that.

Many thanks.

Regards,
Josephbeag

Hi Has anyone created an entry for hemp-lime in the WUFI materials database? Is there any exchange (between users) available or updates (from WUFI) for other 'new' materials? I bought my copy of WUFI Pro 4.2 in February. Also in the WUFI materials database lime plaster (stucco) is refered to. Does t...

Many thanks Thomas. A very useful detailed answer!

Regards,
Joseph

Hi This is my first post on the forum. I'm trying to wrestle with the issue of moisture and long term thermal performance. 1a) Can you please explain how I can work out the adjusted poorer conductivity of building materials (especially insulants) due to the higher moisture content shown in a WUFI si...