[MassHistPres] Rhino Shield

[Garrett Laws]

Here's a roofers perspective on this matter...for what it's worth.
Wood and framing:
You have to look at the areas where moisture WILL enter the envelope of the
structure and if you can Guarantee (yes with a capitol G) that there won't
be any moisture harbored behind the encapsulation than go for it.
Unfortunately in the real world that can be guaranteed. Windows, doors and
the human factor makes it really, really difficult to stop most moisture and
definitely not all from being absorbed be the porous material that the
encapsulation is trying to protect.

Brick, stone and stucco:
You might have a case here that the encapsulation can make the wall system
last longer than paint would, but the frame would still need to be monitored
somehow.

For a real scientific answer, try searching on www.buildingscience.com/ as
they have some really amazing information on how buildings REALLY work.

Garrett


On Mon, Jun 1, 2009 at 2:45 PM, Eric Hertfelder
<EHertfelder at fortadams.org>wrote:

>  Reviewers in historic districts in Rhode Island are contending with
> proposals from homeowners to treat their houses with “Rhino Shield” and
> other applications which essentially encapsulate exterior surfaces with a
> coating 10-15 times as thick as paint.   The maker suggests the coating will
> last for 25 years and provides insulation as well!
>
>
>
> As best I can tell, these coatings are not reversible; i.e., they bond to
> the surface to which they are applied and cannot be removed.
>
>
>
> Has anyone else dealt with this project?  Are there any historic district
> commissions out there that have decided to prohibit or to permit the use of
> such applications.
>
>
>
> Thank you.
>
>
>
> Eric Hertfelder
>
> Bristol, Rhode Island
>
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-- 
Cheers,
Garrett

Garrett Laws, Manager
The Copper & Slate Company
Fine Roofing and Exterior Finish Carpentry
238A Calvary Street
Waltham, MA 02453
Ph: (781) 893-1916
Fax: (781) 893-2041

Copperandslate at Gmail.com or
GLaws at hbuilders.net
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