WUFI

Edgar, I have been looking for this Water Vapour Diffusion Resistance Factor and cannot find one material with it in the N. American database. Can you please tell me where you see it? I have been trying to figure out how to change it for about an hour. The help file makes it seem like you change it ...

Are there generic vinyl siding properties we can use for the sake of modeling exercises? I understand they will vary depending on manufacturer, but so do other materials. If anyone has some guidance on this it would be greatly appreciated.

Thank you,
Lois