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membrane to wrap hollow ends?

Duncan31 · 2013-02-20 22:17:37

We are well into out house build and the engineer has insisted on placing a membrane before dropping the slabs for airtightness reasons. This makes sense to me for sure when he showed us a cross section of the build but he showed us a sample of stuff from SIGA that he says is good stuff. This all looks very good but Im…

20-02-2013 10:17pm

#1

Duncan31

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We are well into out house build and the engineer has insisted on placing a membrane before dropping the slabs for airtightness reasons.
This makes sense to me for sure when he showed us a cross section of the build but he showed us a sample of stuff from SIGA that he says is good stuff.
This all looks very good but Im worried that the material being paper thin will be destroyed with the laying of the slab as it would be easily torn.
Is wrapping the ends of slabs common and of so, what is being used typically? Does it tear etc? Is it bedded in mortar and are the slabs bedded - I could see beding helping the situation but maybe this doesnt happen.

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#2 20-02-2013 11:10pm

mfceiling

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Please send Sas a PM.

He did this the proper way when he was building. He'll show you the correct way to do this.

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#3 21-02-2013 8:13am

thomasthomas19

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The last house I built the slabs were filled with insulation same as a pumped cavity

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#4 21-02-2013 9:02am

sas

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I'm not commenting on the structural concern with this because I'm not in a position to. Also, it could fall foul of the charter.

I've said as much as I believe I can on this topic in this thread and those I refer to within that thread.
http://www.boards.ie/vbulletin/showthread.php?p=71904248

If you search on my user name and the word "hollow" across the construction forum, you will find my attempts to explain how this is done along with photos.

Any additional questions you may have after this please post here and I'll try to answer them. To reiterate, I'm only prepared to comment on this as an airtightness detail, nothing else.

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#5 21-02-2013 2:04pm

beyondpassive

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see example of 'hospital corners to receiving wall.
2012-08-30-649 (FILEminimizer).jpg

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