MAS-07 Masonry Field School
Craftwork Training Center will help you build character one joint at a time!
Whether you're a craftsman, contractor, architect, artisan, or someone who is simply passionate about vintage structures, join us for a 4-day workshop to repoint historic masonry structures.
Under a craftsman's hand, stone becomes more than mere building material--it's an opportunity to create spaces that are fashioned from the very best that nature has to offer. As the list of historic buildings continues to increase, so does the demand for masons who have the necessary skill and knowledge to preserve them. A skilled and exacting mason can match rebuilt sections of masonry to the original in terms of stone type and size; patterns of jointing and coursing; and mortar color, texture, and profile. Although generally considered permanent, masonry is subject to deterioration, especially at the mortar joints. Historically, lime mortar acted as a bedding material (similar to an expansion joint) instead of a glue for the masonry units--and moisture was able to migrate through the joints rather than through the brick and stone. If the mortar does not permit moisture or vapor to migrate out of the wall and evaporate, the result will be accelerated damage to the brick and stone. Repointing mortars should also be softer or more permeable than the surrounding brick and stone and no harder or more impermeable than the existing historic mortar to prevent damage to the building materials. Mortar that is stronger in compressive strength than the surrounding brick and stone will not be flexible, causing stresses to be relieved through the masonry units and resulting in permanent damage to the brick and stone in the form of cracking and spalling. Good repointing practices restore the visual and physical integrity of the masonry and guarantee the long life of the mortar joint, the wall, and the historic structure. The ultimate success and performance of the repairs depends upon the proper selection of materials and the quality of the masons performing the work. Lectures and demonstrations cover the properties of natural hydraulic lime; tips for selecting and mixing lime mortars; cleaning, filling, repointing, and tooling joints; methods to analyze the composition of historic mortar; techniques to execute various pointing styles; and curing conditions. Hands-on skills are demonstrated and practiced on structures undergoing historic restoration, enabling participants to learn and work beside experienced masons. To ensure an exceptional learning experience, the class size is limited.
After completing the workshop participants will:
- Recognize inappropriate, incompatible, and uncomplimentary repairs to historic masonry.
- Be aware of the methods used to analyze the composition of historic mortars.
- Recognize the properties of breathable lime mortar and how these attributes impact the life span of masonry.
- Be able to clean, fill, repoint, tool, texture, and brush joints to match the existing masonry.
- Know the steps to dismantle and reset loose bricks or stone and lay new masonry to match the existing structure.
- Understand how to repair damaged masonry details.
- Be able to execute techniques for cutting, squaring back, and removing joints without damaging historic brick and stone.
- Realize when and how to clean historic masonry.
Book MAS-07 (Aug. 29-Sept. 1, 2017) online at https://www.shoplimeworks.us/store/p488/MAS-07 or call 215-536-1776 to register by phone.
Craftwork Training Center teaches time-honored skills and fine craftsmanship using intensive hands-on training in preservation masonry and carpentry techniques. Our workshops enable students to repair, restore, and stabilize historic structures and their components. We also emphasize construction principles, current and emerging industry standards, preservation practices, and sustainable materials.
All of our workshops include lectures, demonstrations, and hands-on learning and are held on the beautiful campus shared by LimeWorks
.us and Craftwork Training Center located at 3145 State Road, Telford, PA 18969 (unless noted otherwise). Detailed descriptions of our workshops and a complete schedule of our 2017 programs can be found online at http://craftworktrainingcenter.com/course-catalog.php