How have those of you working in historic homes, in northern climes, dealt
with moisture/condensation issues in general - and in particular in attic
spaces during the fall/winter/spring?  During the last two winters we've
experienced substantial mold growth in the unheated attic of a wood-frame
building - followed by 2 mold remediations in the spring.  There is concern
that if some change is not made - beyond lowering temp and rh in the house
overall in winter - that the mold problem will recur. One of the potential
solutions that has been proposed for the attic space is to spray
polyurethane foam insulation into the rafters of the attic space, sealing
off exterior attic vents, and pressurizing the space - bringing that space
closer to the conditions of the heated spaces of the building. I'd love to
hear pros/cons from any of you who've had experience with this process - or
have other information to share about managing the balancing act between
environmental conditions for collections objects and preservation of
building structures.  Thanks!

Cait Dallas
Curator of Collections
Ten Chimneys Foundation
[log in to unmask]
(262) 968-4161 ext 202

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