Glue / Silicone / Foam Airtightness for Timber/OSB

[joe90]

2 minutes ago, PeterStarck said:

I used Soudal Flexifoam which claims to be airtight.

 

Air permeability (DIN 18542) a < 0,1 m³/[h.m.(daPa)²/³]

 

@Oz07 I have been racking my brain to remember the foam I used and it was the one Peter used as above.

[MikeGrahamT21]

2 hours ago, willbish said:

Thanks @MikeGrahamT21 I shall give it a try, I've got a few tricky places where a new air tight build meets an old party wall.

 

The only other foam I can find that claims EN12114 air tightness is Everbuild Thermofoam , which is slightly cheaper, do you have any experience with this?

I got mine from here: https://www.toolden.co.uk/accessories/adhesives-sealants/expanding-foam/illbruck-fm330-pro-foam-air-seal/

 

I know when i was looking for foam, I noticed that the FM330 was the only foam I could find which had been tested to both + and - 1000Pa and achieved <0.1m3/(h.m) which i thought had to be a good thing, unless they are the only ones who note it down like this.

Edited December 9, 2019 by MikeGrahamT21