Interior Finishes on ICF
Last Post 17 Feb 2014 01:55 PM by smartwall. 13 Replies.
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renayUser is Offline
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10 Dec 2013 05:42 PM
I'm building an ICF home with plans to plaster the exterior in spring (when the weather is nicer!). I have a mason friend who as that sorted out for me. I would like to use something like Plastermax for the interior, but my mason friend says he knows nothing of interior plasters. I have been told by everyone but the building inspector that Plastermax is not approved for Canadian use. I'd rather not raise more red flags with the local building inspector....Can anyone tell me if I can use it? And if so, where I might find it?
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10 Dec 2013 07:21 PM
Maybe you should Google it. It seems like the boys and girls who sell it would know something about the Canadian acceptability.
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10 Dec 2013 07:21 PM
Posted By renay on 10 Dec 2013 05:42 PM
I'm building an ICF home with plans to plaster the exterior in spring (when the weather is nicer!). I have a mason friend who as that sorted out for me. I would like to use something like Plastermax for the interior, but my mason friend says he knows nothing of interior plasters. I have been told by everyone but the building inspector that Plastermax is not approved for Canadian use. I'd rather not raise more red flags with the local building inspector....Can anyone tell me if I can use it? And if so, where I might find it?
When I was planning my house in 2007 I thought about plaster for the interior. No question it's a great way to finish a house. What I found are two problems. First, plastering is an art that has almost disappeared from the North American scene and finding a competent plasterer can be a real challenge. Second, it's multiple times more costly than drywall. If money is not a particular concern for you, and you really want to go that route, then go for it. But I'd be hesitant to use a mason friend who can do stucco on the exterior. Interior finishing has to be much, much, more smoothly done. If he's not a plasterer by trade, think twice about having him do it. Or were you going to do it yourself?

This company operates in Canada and uses Plastermax. http://www.wolfedecorativefinishes.com/html/GIGACRETE/

Even a retired engineer can build a house successfully w/ GBT help!
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10 Dec 2013 07:57 PM
dmaceld - I found much the same as far cost.
I considered doing a basement wall to get the hang of it but after reading up on it, the mixing rituals are much like old plaster and its best applied by a group of reasonably skilled individuals.

If I remember right, mix it in a machine, hopper spray it on the walls, a good darby man to flatten it and several trowellers polishing it.

Open pot time and work time were also considerations.

Makes me wish the old guys where still around cause plaster finish has so much more live then dead flat.
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11 Dec 2013 09:55 AM
Last time I checked PlasterMax did not have the testing completed for a thermal barrier in Canada. Not saying it wouldn't pass the test (I am sure it would work just fine), but the company simply did not want to pay the costs of the test for Canadian Approval. I have seen samples of this product and the strength/texture/durability are impressive vs. drywall.

There are other products available for interior plasters. I know one homeowner in Canada that used American Clay, but I can't tell you if this product has Canadian Approval either. http://americanclay.wix.com/new/home#!__homeownersdiyers-learn.
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12 Feb 2014 10:29 PM
I have a lot of experience with PlasterMax and StuccoMax. If there are any questions regarding approval for the Canadian market that would be best answered directly by the manufacturer. The product delivers exactly what they advertise. I worked 12 years in Germany, Holland and Belgium so the transition to this type of plaster was really not an issue. Besides I have the ability to apply the coatings with a (special)pump which happens to be the best pump you can buy to apply these coatings. If you need me to look at anything please email me at XXX-XXX-XXXX (Phone #'s and email addresses are not allowed in forum posts)
AltonUser is Offline
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13 Feb 2014 01:46 PM

I see that the forum deleted your contact data.  One way to get your e-mail address to stick is to write it differently enough that bots will not find it.  Try this way but use your e-mail and not mine:

Alton at Auburn dot Edu

Of course, this could all be in lower case as usual.  Most servers and software are NOT case sensitive for e-mail addresses.

If people say this and then type it in the conventional format for e-mails then you should be able to receive their e-mails.  Give it a try and see if it works. 

Residential Designer &
Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period .
334 826-3979
Leon PossibleUser is Offline
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13 Feb 2014 02:19 PM
Hay Alton, WHy not just follow the dern rules and put the personal data in a private message?
AltonUser is Offline
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13 Feb 2014 04:31 PM
I agree but for newcomers, some do not know about private messaging.
Residential Designer &
Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period .
334 826-3979
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15 Feb 2014 07:38 AM

Posted By ICFBdr on 11 Dec 2013 09:55 AM


Last time I checked PlasterMax did not have the testing completed for a thermal barrier in Canada.  Not saying it wouldn't pass the test (I am sure it would work just fine), but the company simply did not want to pay the costs of the test for Canadian Approval.  I have seen samples of this product and the strength/texture/durability are impressive vs. drywall.
 
There are other products available for interior plasters.  I know one homeowner in Canada that used American Clay, but I can't tell you if this product has Canadian Approval either.  http://americanclay.wix.com/new/home#!__homeownersdiyers-learn.





Why do you want to 'thermally break' an interior wall made of concrete, plaster, stucco? If anything if you allow the interior wall to convect(intake/exhaust) heat/coolth air it will lower your HVAC load utility bills and balance out fluctuations. ORNL did prototype/model testing and found the most effective 'mass' had 4 inches of interior concrete (not core surrounded by foam). Besides, the temp difference of the internal set point to the exterior air will determine how much of a break you need, an ICF should satisfy that in most cases. It just does nothing for utilizing thermal mass, interior "dense thick" plaster will help. read "conclusion" http://web.ornl.gov/sci/roofs+walls/research/detailed_papers/thermal/index.html "Comparative analysis of sixteen different material configurations showed that the most effective wall assembly was the wall with thermal mass (concrete) applied in good contact with the interior of the building. Walls where the insulation material was concentrated on the interior side, performed much worse. Wall configurations with the concrete wall core and insulation placed on both sides of the wall performed slightly better, however, their performance was significantly worse than walls containing foam core and concrete shells on both sides."
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16 Feb 2014 10:27 PM
Hello

I just joined and this is my first post. Be gentle LOL

We are seriously concidering ICF and now reading up on interior finishes.

Pardon my ignorance, can I not screw drywall into the styrofoam? Should I use straping then screw drywall into that?

Is finishing the insode a deal breaker for using ICF?

Thanks in advance


Prescott
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16 Feb 2014 11:05 PM
Posted By prescott on 16 Feb 2014 10:27 PM
Hello

Pardon my ignorance, can I not screw drywall into the styrofoam?
Yes, that is the way it is normally done.  You can also glue-and-screw.  A few shots of spray foam adhesive such as Enerbond along with screws is fairly common also.  That is the way I plan to have my drywall installed.
prescottUser is Offline
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16 Feb 2014 11:39 PM
Thanks Arkie

I read a number of posts in the learning centre LOL I should have done that first :-(

I like the infomation and varying opinions.

Next year we are "building" our retirement home, small 2 bedroom Guildcrest home. We are responsible for the foundation etc. It'll be a walkout mancave !
smartwallUser is Offline
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17 Feb 2014 01:55 PM
A drywall finisher can do great job on stucco. That's who I use
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