Led by Andy deGruchy, Workshops

Misc Training Work

The following are examples of training work we have done. We have provided training for volunteers of non-profit run historic sites and for contractors as specified by preservation architects for other projects:

Here’s an example of an all volunteer workshop lead by Andy deGruchy over a two week period. The group saved the little historic bridge and did it for no cost to the Weisel International Youth Hostel and the
Bucks County and Nockamixon Park Systems. deGruchy Masonry, Inc. contacted the Heritage Conservation Organization in Boulder, CO who put the word out and organized the workshop. Andy deGruchy has a philosophy that a workshop for masonry restoration should not be done inside a building where work is practiced only “In theory” and then the work is torn down and material and labor wasted.

Instead, Andy believes that using the labor and material to accomplish a needed work for an ailing structure serves many purposed simultaneously. One purpose is to accomplish some needed intervention immediately rather than talking about it and letting the historical object fall down while well-intended plans are being made. Andy was the “fearless leader” and worked along side everyone to coach and encourage all the participants until the final completion. Oddly the work began on a September 11 morning, a poignant date that counters the painful legacy it conjures up by instead having a group of committed people choose to start saving, healing, helping and rebuilding.


Stabalized Stone Bridge

A small historic country bridge in Bucks County, PA was stabilized with NHL lime/sand/casein grout and then repointed after laying up all the fallen stonework using Pure Natural Hydraulic Lime mortar throughout.

In 2006 we coached a crew of masons in mixing up St. Astier Natural Hydraulic Lime #3.5 with black slag inclusions to reproduce a similar mixture tooled to an inverted-V style joint on the Burgess Foulke House Museum in Quakertown, PA.

Previous Portland cement patches held water into the bedding mortar so that after the Portland cement was removed we took moisture meter readings to see that the levels of moisture in the wall dropped prior to repointing. This workshop was done at no additional cost to the Historic Society that owns the building after they awarded the bid to the lowest qualified bidder at a fixed, quoted cost.

 Additional Resources:

On-site Training / Guidance Referrals

AIA/CES Accredited Lime Presentation DVD

We demonstrated to local crews the use of St.Astier Lithomex and Natural Hydraulic Limes for applications on the St. John the Divine Church in New York City.

deGruchy Masonry, Inc trained a local crew in Atlanta, GA to use Ecologic™ DGM 50 colored mortar for repointing work at the historic Fox Theater.

We provided training for another set of contractors who did the repointing work performed at the Ephesus Seventh-Day Adventist Church in Harlem, NY who also utilized Ecologic™ DGM 50 colored mortar and St. Astier Lithomex stone repair material to repair the damaged brownstone on the church.

The National Park Service hired deGruchy Masonry, Inc. to train and inspect work done by a contractor to the new Visitor’s Pavillion at Grey Towers, the home of the founder of the National Forest Service. They used St. Astier Natural Hydraulic Lime for interior and exterior plaster and for building stone walls.

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