[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: GSBN:Re: Danny Buck's moisture NM
for our guest house at the Atlantic coast, I strongly think of applying a
silicat paint from Keim "Granetal" on lime (St. Astier). Keim has different
silicat paints even for tropic situations.
Another option to protect the outside wall I ponder of using Heraklith
boards and stuccoing them with lime. These boards Datasheet - Heraklith-BM
(Acrobat PDF-File), screwed on wooden I-beams in the wall (inside Fermacell)
and will be ventilated (50mm). Than the strawbale 1 x sprayed on both sides.
Heraklith: magnesite-bound wood wool lightweight special grade board for
inside and outside,
with universal properties of thermal insulation, sound protection, fire
protection and lining board.
Its a rather expensive but seems to be promising save. What do you think?
I could send a drawing for discussion.
Best wishes, Martin
----- Original Message -----
From: "Chris Magwood" TLSEditor@...
To: "GSBN" GSBN@...
Sent: Thursday, November 11, 2004 9:21 PM
Subject: Re: GSBN:Re: Danny Buck's moisture NM
> >My feelings these days are that under no circumstance should we allow
> >moisture to enter a straw bale wall in any form from the inside or the
> >outside. Why take a chance on the moisture finding it's way out of a
> >wall? Therefore I am of the opinion that we should make sure that
> >moisture in vapour or solid form cannot get into a bale wall. Therefore
> >we should treat the finished coat of render accordingly and use methods
> >and materials that will give a water proof wall from BOTH sides.
> I think John raises an interesting issue here. I've always stuck by
> the breathable argument, and have seen some surprising examples of
> drying taking place this way after significant soakings. But I, like
> John, don't want to leave it to this process entirely.
> I have lately been experimenting with silicate paints (from Eco-House
> in New Brunswick). They claim an excellent water repellancy (is that
> a word?) and little effect on breathability. I can attest to the
> repellant qualities... even on earthen plasters water will bead and
> roll off. But does anybody know for sure if the breathability is as
> good as is claimed? If so, I think the silicate paints are something
> that could be widely promoted for straw bale. They seem to be
> relatively non-toxic (again, based on manufacturer claims) and
> created with natural materials, the colours are excellent, the cost
> is reasonable... Seems like it could be an excellent solution to one
> of our biggest concerns, and an easy one too, if it works like it
> seems to work.
> Chris Magwood / Camel's Back Straw Bale Construction
> <a target="_blank" href="http://www.strawhomes.ca">http://www.strawhomes.ca</a>
> Interested in bale building? Have you subscribed to
> The Last Straw Journal?
> You should!
> <a target="_blank" href="http://www.thelaststraw.org">http://www.thelaststraw.org</a>
> GSBN is an invitation-only forum of key individuals and representatives of
regional straw construction organizations. The costs of operating this list
are underwritten by The Last Straw Journal in exchange for use of the GSBN
as an advisory board and technical editing arm.
> For instructions on joining, leaving, or otherwise using the GSBN list,
send email to GSBN@...HELP in the SUBJECT line.