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

[Callomon,Paul]

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<mailto: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 :)
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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