Blowerproof liquid membrane

Post Reply
David Lam
WUFI User
WUFI User
Posts: 3
Joined: Fri Dec 06, 2019 7:06 am -1100

Blowerproof liquid membrane

Post by David Lam » Wed Dec 11, 2019 2:46 am -1100

Hi all

Does anybody have any experience with using Blowerproof or a similar sprayed/painted membrane for air tightness?
Can you offer any advice for modelling in WUFI pro?

https://www.blowerproof.co.uk/wp-conten ... LIQUID.pdf

Thank you

D

Christian Bludau
WUFI SupportTeam IBP
WUFI SupportTeam IBP
Posts: 881
Joined: Tue Jul 04, 2006 10:08 pm -1100
Location: IBP Holzkirchen, the home of WUFI
Contact:

Re: Blowerproof liquid membrane

Post by Christian Bludau » Wed Dec 11, 2019 8:56 pm -1100

Dear David,

for this layer you can either set up an layer:
- do that based on some membrane with constant sd-value, you only have to adapt the µ-value of your material.
or if this is the outermost layer, you can set it as an sd-value in the boundary condition (in this case no layer is needed).

Christian

David Lam
WUFI User
WUFI User
Posts: 3
Joined: Fri Dec 06, 2019 7:06 am -1100

Re: Blowerproof liquid membrane

Post by David Lam » Wed Dec 11, 2019 9:45 pm -1100

Super.
I shall investigate.
Thank you
D

Toby Cambray
WUFI User
WUFI User
Posts: 11
Joined: Mon Jan 11, 2016 1:28 am -1100
Contact:

Re: Blowerproof liquid membrane

Post by Toby Cambray » Tue Dec 24, 2019 1:02 am -1100

Hi David

One factor that has crossed my mind with this and similar products (purple passive, Aerosana etc) is that the final vapour resistance will depend on the thickness. I'm not sure how accurately that is controlled, given the manual spray method. would be interesting to get some samples and do some testing. I'll email you separately about that, might be able to help each other out.

Toby

David Lam
WUFI User
WUFI User
Posts: 3
Joined: Fri Dec 06, 2019 7:06 am -1100

Re: Blowerproof liquid membrane

Post by David Lam » Sun Dec 29, 2019 11:50 pm -1100

Cheers Toby!

Post Reply