[Nhcoll-l] what materials use in collection storage rooms for walls, floors and ceilings.

[Adam Rountrey]

Hi all,
If anyone has documents or experiences relating to the pros/cons of
sodium/potassium/lithium silicate concrete densifiers in museum/archive
environments, I would be interested as well.  I have not been able to find
anything particularly useful, and we are considering their use in one of
our facilities.
Thanks.
-Adam





On Mon, May 17, 2021 at 8:36 AM Callomon,Paul <prc44 at drexel.edu> wrote:

> Sealing concrete floors: in part what you do depends on how well the
> concrete was originally rendered. If it was skimmed to a smooth, slightly
> glossy finish then that should take a thinner, solvent-based sealant well.
> We recently did this for concrete floors in our public museum.
>
> If it’s rougher, however, or you can empty the room and roughen it with a
> machine, then two-pack epoxy is worth considering. This is what they put on
> workshop floors, and if correctly applied it’s tough, easy to clean and
> durable.
>
>
>
>
>
> Paul Callomon
>
> Collection Manager, Malacology and General Invertebrates
> ------------------------------
>
> *Academy of Natural Sciences of Drexel University*
>
> 1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
> *prc44 at drexel.edu <prc44 at drexel.edu> Tel 215-405-5096 - Fax 215-299-1170*
>
>
>
>
>
>
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> *On Behalf Of *Lennart
> Lennuk
> *Sent:* Saturday, May 15, 2021 5:28 AM
> *To:* nhcoll-l at mailman.yale.edu
> *Subject:* [Nhcoll-l] FW: what materials use in collection storage rooms
> for walls, floors and ceilings.
>
>
>
> *External.*
>
> Hi
>
>
>
> Because I had no answers to my questions, I try again J
>
> Two question on the material use for collection storage room walls, floors
> and ceilings:
>
>
>
> 1)      Is using PVC-flooring in fluid collection and in areas where
> people work with collections ok?
>
> 2)      Our new collections floors are planned to have concrete floors
> treated with Pentra-Guard
> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fconvergentconcrete.com%2Fproducts%2Fpentra-guard-ext&data=04%7C01%7Cprc44%40drexel.edu%7Caba9ae9758194df0be4508d91783b8d8%7C3664e6fa47bd45a696708c4f080f8ca6%7C0%7C0%7C637566676793314125%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=aRTilIC5V8PBXij8FcJH%2F5bIMLRQIaz%2Fd6uY2Af%2FZWE%3D&reserved=0>.
> In description I read it is based on lithium.
>
>
>
> Some of the information I have found this far:
>
>
>
> I found this in NPS Museum Handbook:
>
> „Treat concrete floors with a sodium silicate sealing/curing agent. This
> hardens and increases the density of the surface of the concrete, helping
> protect it from cracking, dusting, and other damage. The floor should be
> easy to clean without the use of chemical cleaners or water“
>
>
>
> And also an short introduction of an article about lithium chloride:
>
> „UTILIZATION OF LITHIUM CHLORIDE SOLUTIONS FOR CONTROLLING RELATIVE
>
> HUMIDITY IN MICRO ENVIRONMENTS
>
> BEYER, SARAH R. and STEPHEN L. WILLIAMS, Museum of Texas Tech University,
> Lubbock,
>
> Texas 79409-3191
>
> The utilization of saturated salt solutions at known temperatures has been
> used by the museum
>
> community for establishing desired relative humidities in
> microenvironments. To alleviate the
>
> expense of acquiring different chemicals, the authors investigated the
> feasibility of using different
>
> concentrations of lithium chloride for establishing and controlling
> relative humidity. Much of the
>
> information about the relationship between concentration and relative
> humidity was extrapolated
>
> from the literature. Subsequent testing demonstrated the usefulness of
> this information and how it
>
> might be used for initiating controlled changes in microenvironments.“
>
>
>
> Best regards
>
> Lennart Lennuk
>
> Head of collections
>
> Estonian Museum of Natural History
>
> (+372) 6603404, 56569916
>
>
>
>
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