Sarah Jackson

Sarah Jackson

Sarah Jackson represented NCPTT at the Casey Farms workshop, a Preservation Trades Network regional workshop.

She presented a hands-on session on traditional limewash and distributed a booklet to participants that explained the history of NCPTT’s limewash research.

For more information, contact Sarah Jackson.

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3 Responses to Jackson Presents Limewash Session at Preservation Trades Network Regional Workshop

  1. Theresa de Vries says:

    Good Morning Sarah,
    I am writing to ask about repair of topcoat to a children’s play area wall. It is a cob wall with lime plaster top coat, which is now falling apart.
    We live in a co-housing community and about 6 years ago the wall walls were built under the supervision of a community member that has moved out. No one else has knowledge of what to do with it. I just moved here (Stone Curves, Tucson, AZ) and said I would take on the task of figuring out what to do. I have no, zip, nada experience with this building technique and am reading a lot and trying to gather information.
    Is there any information you can give me? I’m thinking the wall topcoat, which is missing large sections, cannot be repaired but must be removed before we put on a new topcoat. What should the top coat be made of? Can we put a ferrocement top over the cob infrastructure? Any info you can send me or direct me to would be greatly appreciated.
    We are hoping to do this ourselves and only pay for mataerials.
    Thanks so much for any help you can give us.
    Theresa de Vries

  2. Theresa,
    If I understand you correctly the cob is covered in lime plaster and possibly limewashed. If the plaster is deteriorated and falling off in small areas you could patch it with a like material and limewash it to blend in with the rest. You would want to test the surrounding area and see if any additional areas are failing. It is best to remove all loose plaster before you begin patching. The NPS Technical Preservation Services provides Preservation Briefs (http://www.nps.gov/tps/how-to-preserve/briefs.htm) that offer instruction and recipes for many repairs. If you also need to apply limewash we have a video (http://ncptt.nps.gov/application-and-preparation-of-limewash-video-2008-07/) and a booklet (http://ncptt.nps.gov/study-on-the-durability-of-traditional-and-modified-limewash/) that provides instruction on mixing and application. If I can be of any further assistance please feel free to email me at sarah_m_jackson@nps.gov. If you would like to send me photos I may be able to offer additional advice.

  3. Mike Fineran says:

    I have been asked to reapply a limewash on the ceiling (beams on floor boards) and plaster walls of a museum in CT. The surfaces have stains from previous water leaks. Will the stains show through or bleed through the new limewash? Can something be put on the stained areas (shellac?) to prevent the bleeding through? Would something like shellac interfere with the adhesion of the new limewash? Thank you!

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