[GSBN] Clay paints/sealers for Multiple Chemical Sensitivy

Paula Baker-Laporte FAIA paula at econest.com
Wed Sep 13 13:15:56 CDT 2017


I think that Tony is referring to one of the paperless drywalls that has a
fiberglass mesh on it instead of paper. This should not be a source of out
gassing.
Paula

On Tue, Sep 12, 2017 at 6:17 PM, Derek Roff <derek at unm.edu> wrote:

> Hi, Tony,
>
> I agree with Chris, that introducing new fiberglass seems risky for
> someone with chemical sensitivities.  I’d suggest seeing if there is a way
> to pin down what she is reacting to.  15-year-old plywood, OSB, and drywall
> have given up the majority of their gases.  They might still be causing the
> problem, but might there be another source for the problem?  Ventilation
> ducts?  Something in the ceiling/roof?  Gases coming up through the soil or
> floor?
>
> I work with shellac a lot, and it can be a superb sealer.  The big
> question mark is the solvent.  Denatured alcohol is normally used, and the
> “denatured” part is the addition of poison to the mix.  Usually methanol is
> added, but many other toxic and cheap chemicals are frequently part of the
> formula, and often not fully listed, since they are proprietary and our
> disclosure laws are very weak.  So-called citrus solvents may or may not be
> safer.  Unless you can be very sure about the solvents used, I would be
> nervous about shellac products.  Clay paints from a reputable company seem
> like a safer way to go.
>
> Derek
>
> Derek Roff
> derek at unm.edu
>
>
>
>
> On Sep 12, 2017, at 5:12 PM, Chris Magwood <chris at endeavourcentre.org>
> wrote:
>
> Hi Tony,
>
> If she is chemically sensitive, I wouldn't recommend using fiberglass.
>
> AFM Safecoat makes a sealant for holding back VOCs from materials like
> plywood: http://www.afmsafecoat.com/products/stains-sealers/
> safecoat-safe-seal. We've used it for chemically sensitive clients where
> we can't get rid of the material and it seems to work well.
>
> I haven't put clay paint directly over the AFM sealant before, but the
> companies we use for clay or lime paints (Kreidezeit and Auro) make primers
> that are full disclosure ingredients and would allow their paints to be
> used.
>
> Chris
> On 2017-09-12 5:43 PM, Anthony Novelli wrote:
>
> Greetings old friends,
>
> I am probably ignoring list etiquette by not sifting through the archives,
> but I have a workmate who is rapidly trying to remodel a space for his
> daughter who is chemically sensitive and reacting to her current living
> space. He was directed toward clay paints, though since part of the space
> is enclosed with 10-15 year old OSB and plywood, I suggested he might also
> consider sealing that and the 5/8'" drywall with fiberglass inside before
> covering it.
>
> We are within driving range of retailers like Organic Grace in Garberville
> where both paints and sealers are available, though budget is a concern.
> Simple clay paint recipes might be useful.
>
> Also he mentioned something I think he was told at a Kelly Moore shop
> where they have an alcohol-based sealer like a shellac that off-gasses
> heavily for a very short period of time, but is then safe.
>
> Any input?
> Thanks in advance, and hi, howdy and hugs all round.
>
> Tony Novelli
>
>
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> --
> Chris Magwood
> Director, Endeavour Centrewww.endeavourcentre.org
>
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-- 
Paula Baker-Laporte FAIA,BBEC
Econest Architecture Inc.
www.EcoNest.com
paula at econest.com
Phone: 541.488.9508
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