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DCHAS-L Archives · Post dated October 7, 2026

Re: [DCHAS-L] Epoxy painting soapstone chemical fume hood surface

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Subject: Re: [DCHAS-L] Epoxy painting soapstone chemical fume hood surface

Date: Oct 7, 2026 13:25 UTC

Author: Bridget Morris <0000193824b50d68-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

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Subject: Re: [DCHAS-L] Epoxy painting soapstone chemical fume hood surface

Date: Oct 7, 2026 15:28 UTC

Author: rpalluzi**At_Symbol_Here**verizon.net <000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

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From: Demant, Gisela <gdemant**At_Symbol_Here**WILLIAMS.EDU>

Subject: Re: [DCHAS-L] Epoxy painting soapstone chemical fume hood surface

Date: Oct 7, 2026 13:41 UTC

Reply-To: ACS Division of Chemical Health and Safety &lt;DCHAS-L**At_Symbol_Here**PRINCETON.EDU&gt;

In-Reply-To: [DCHAS-L] Epoxy painting soapstone chemical fume hood surface

Demystify: 
Hi!
We had issues with our hoods; the epoxy bench cracked and leaked into the cabinets underneath.
We considered replacing it with stainless steel and decided against it due to corrosion. (We use a lot of acids and solvents)
Trying to fill the cracks did not work either.
In the end, we replaced the hoods.
However, if your work isn't destructive to stainless steel, I know that is what we would have chosen.
Have you reached out to a stone mason to get their take on this?

On Wed, Oct 7, 2026 at 8:56 AM Emery, Paul <000022b311809bcc-dmarc-request**At_Symbol_Here**lists.princeton.edu> wrote:

Good afternoon DCHAS,

 

I’m wondering if any of you have any experience painting / resealing natural stone work surfaces in chemical fume hoods. A laboratory has three aging hoods that cannot be readily replaced. Considerations have included an epoxy-based sealant / paint OR installation of a ~16 gauge stainless steel sheet. Of course these cannot affect designed airflow, sash movement, etc.

 

We are awaiting confirmation that their scope of work will not increase beyond fine powders (metals, salts, silica), oils (mineral mostly), and cleaning solutions (soap, ethanol/IPA). I have also asked for the specific product(s), manufacturers literature on intended use and chemical resistance, as well as their contractors experience using such materials on natural stone work surfaces.

 

Any thoughts, ideas, or experience from the group?

 

Thank you in advance for your time and consideration.

 

Best,

-P

 

Paul R. Emery, MSc

Safety Advisor - Chemical Safety Specialist

 

Yale Environmental Health and Safety

135 College Street, Suite 100

New Haven, CT 06510

Phone (203) 737-3521

Mobile (475) 261-6163

Email paul.emery**At_Symbol_Here**yale.edu

 

 

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