Video Blog: Replacing damp basements
Last Post 16 Dec 2011 01:23 PM by JosephFearn. 9 Replies.
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JosephFearnUser is Offline
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15 Dec 2011 03:04 PM
Below is a link to a video blog on a project we recently did underneath an existing 1950's house. The homeowners are doing a complete renovation. And were sick of the moldy, dark basement they were living with.
http://www.fab-form.com/fastfootMp/...ctUsar.php
jonrUser is Offline
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15 Dec 2011 03:28 PM
So the footing still creates a thermal bridge to the interior of the ICF?
JosephFearnUser is Offline
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15 Dec 2011 04:53 PM
Absolutely. Like every ICF foundation; unless the footing is insulated, there will be a thermal bridge to the interior of the ICF. We have a Passive house project coming up where we are insulating both the footings and the slab. I will put up pictures of the build as we go.
peterswetUser is Offline
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15 Dec 2011 09:32 PM
Pretty slick system Joseph......
ICFHybridUser is Offline
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15 Dec 2011 11:32 PM
How wide a footer can be poured with that method? I see that the vertical braces are right at the edge of the footer in the video.
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16 Dec 2011 09:36 AM
Posted By JosephFearn on 15 Dec 2011 04:53 PM 
. . .    We have a Passive house project coming up where we are insulating both the footings and the slab.     . . .
What type of insulation under the footer and slab?  If EPS, then which type and what is the compressive strength of that particular type.  I, too, believe the footer and slab should be insulated in certain climate zones.
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Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period .
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JosephFearnUser is Offline
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16 Dec 2011 11:59 AM
Alton we are going to have custom made EPS footing/slab panels; R26, 30 psi. This home is going to be in Vancouver, a temperate rainforest. So creating a passive house is something very possible. We are really looking forward to the project

ICF Hybrid. The largest footing you can do with an 8" wall is roughly 10x30". You are right, on wider footers the strongback can dig into the footing bag. For really wide footings, take a look what Robb Armstrong has done. http://youtu.be/gD-rrgQcWpw

Thanks for the comments guys.
jonrUser is Offline
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16 Dec 2011 12:28 PM
30 psi foam should be stronger than the soil it sits on (ie, should work well). But seems to me that if there is going to be a slab poured, why not combine the slab and the footings instead of the walls and the footings. There are two pours either way and insulation is easier and soil loads are lower with the footing/slab combination. I don't think a cold joint between walls and floor is a problem, even in a basement (although a flexible seal might be wise).

The fast foot makes sense to me with a crawlspace.
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16 Dec 2011 01:02 PM
Interesting technology. It seems as though most of the ICF products come from Canada.

Are cold joints between the slab and an ICF wall a bad thing?
JosephFearnUser is Offline
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16 Dec 2011 01:23 PM
Jonr, Im right there with you on that one. We are pouring the footings and slab at the same time on this job. It is not utilizing the Monopour system at all. In fact, there won't be any ICF walls on this upcoming project.
We are attaching Fastfoot to the bottom of the EPS panels to act as a dampproof membrane though.
Lbear- if they can, cold joints are something that should be avoided. Cold joints by definition are a complete crack in the foundation & can lead to moisture damage. That's why we have so much steel protruding from footings/slabs into the ICF walls. With this system that whole process is eliminated.
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