The services that I most frequently provide are cleaning, re-setting, and repairing broken stones. I also duplicate socket-type bases made of limestone when the original is too damaged or fragile to hold the stone, and I will repair broken finials/urns. Whether you own land on which there is an old cemetery in disrepair, or a deceased family member’s gravestone has shifted and is askew, I can provide my skills and services to conserve the stones in question. I also photograph jobs for my own reference, and will email them to customers if they wish; this is especially good for clients who are not close to the cemetery.
Cleaning gravestones is probably the most frequent work done by untrained individuals. Many people have asked me while I worked “What brand of bleach do you use?” When I reply that household bleach, while known for whitening surfaces, is one of the more detrimental solutions that can be put on a gravestone, they are shocked. Likewise, untested products such as "Wet & Forget" and "Citra Shield" may show immediate results; however, the long-term effect on gravestones is not known. The product that I use 95% of the time is called D/2 Biological Solution™ (see "Links" page). It is relatively expensive at $40 or so per gallon, but its thorough testing, environmentally-safe composition, long history and use at some of the country’s most sacred sites has ensured its success. Another cleaner that I have used in the remaining cases is Prosoco’s Enviro Klean Revive. I will not pressure wash any stone, and no conservator who follows the "best practices" in the field will. Even though some monument companies will recommend chlorine bleach and water as a cleaning solution, they only do so out of ignorance, for testing that has proven bleach to be harmful to marble and limestone, or they use it because it is cheap. As well, pressure washing will damage the surface of the stone, creating a 'sugared' look to it, and making it rougher and more likely to be resoiled in the future. (See photo just above "Resetting" below.)
Cleanings may involve scraping lichens from the stone’s surface using soft plastic scrapers or scraps of soft wood. Various non-metallic brushes are used, and in the end, lots of fresh, clean water is used to rinse the biologicals and cleaning solution from the stone. Most cleaning solution manufacturers do not recommend cleaning at temperatures below 50° F; I usually recommend cleaning to be done from March to November as the temperatures will be warm enough for the solutions to work effectively.
The photos below show a small stone before cleaning with D/2™, after cleaning (and drying), and 8 months after cleaning. While there is a change in the appearance of the stone just after cleaning, many biologicals take some time to be flushed from the stone and its surfaces.
This is an example of how power washing can erode the surface of the stone and round over carving. While the stone is definitely white and clean, the rough surface is more susceptible to biological and environmental soiling in the future. Additionally, the stone's appearance has been changed forever by the monument company's failure to use approved cleaning methods and solutions.
Resetting involves removing a stone from its current position to re-make its base level and the stone plumb. In most cases, the base and the inscribed portion of the stone are separated. An appropriate amount of soil or failed concrete under the base is removed and replaced with a more stable aggregate which is firmly tamped down. The base is replaced and the aggregate is added to low areas or removed from proud areas until the base is level in both directions. The top portion of the stone is then replaced, either being mortared in with Ecologic™ naturally hydraulic lime (NHL) mortar, affixed with small dabs of epoxy, or set upon wedge lead and/or monument setting compound. For bases and stones too heavy to move by hand, a tripod is used along with a chain hoist and nylon slings or a Monumentall™ clamp. I do not use any power machinery to reset stones. I am frequently emailed about a stone that was broken by someone's attempt to straighten it or put it back on a base. Besides the chance of damaging the stone, you might be injured. Don't try it just to save money.
The following photos show a larger marble obelisk, a sandstone tablet, and a modern granite monument being reset.
The base portion is checked for level and aggregate is added under the appropriate side. While most multiple-pice monuments were finished with tops and bottoms flat and parallel, sometimes they were not. When this is the case, the base of a monument may need to be set slightly off-level or plumb so that the upper pieces can be re-set truly level and plumb.
A Sandstone Tablet
While granite has been widely sold since the 1920's and termed the "Rock of Ages"™, many older stones are found tilted, shifted, and even fallen. Primarily, this occurs from either a poorly done concrete base under the stone, or compaction of the soil on one side of the stone. Click on the photo to read the caption.
Older stones (and especially those of marble) that are thin or that have intricate parts, are frequently found broken or damaged. If the pieces can be found, they can be cleaned and dry fitted together. At that time, missing pieces are noted and the judgement can be made on infilling the missing areas with mortar made of NHL and marble dust. The broken pieces are epoxied together using Akemi Akepox 2030. While not designed for super-strength bonds, this adhesive was designed for stone bonding and has not failed in any case that I have used it.
Drilling and pinning the stone together is also a method I may use.
The following photos show a medium-sized tablet stone that was reassembled and conserved. Click on a photo to read the caption.
Infill Used When Pieces of the Stone are Missing
Conservation of Two Marble Urns
The following photos show the "start to finish" process of repairing two marble urns that had either been damaged from the iron pin used to anchor one when it was made or to repair an old break. Prosoco HCT and H100 consolidant was used before any epoxying was done. Click on the photo to read the caption.
As of May 1, 2020, I am only taking on stonework/re-setting jobs of three stones or fewer, but will do cleaning of larger numbers of stones.
If you have a question, send me an email and photos and I can advise you.
If you'd like more information, contact me at (979) 347-0534 (mobile),
(979) 836-7715 (home), firstname.lastname@example.org
or browse my website.