Masonry Magazine August 1988 Page. 30
As mentioned, any program involving the replacement of terra cotta units must be accompanied by a complete repair program that will ensure the continued integrity of the terra cotta. The program will involve comprehensive repair work done at the time of the restoration, and a regular (preferably annual) program of inspection and corrective action by a masonry contractor.
In instances where the original installation involved improper building procedures that led to excessive stress and the cracking of terra cotta units, new expansion joints may need to be cut and other corrective actions taken. Particular attention must be paid to maintaining the water-shedding systems and eliminating sources of excess water exposure. Roofing systems, gutters, downspouts, flashing around windows, cornices or other details must be repaired if ineffective. A program of recaulking of cracks and re-pointing may be indicated as a means of reducing water penetration.
Moisture from condensation or other sources that build up behind the terra cotta must be able to exit the wall. This may involve creating or unblocking weep holes.
Moisture can also be drawn up into the wall from the ground through the capillary action of highly porous backup bricks. In this case, it is advisable to install an impervious layer of material between the bricks and the ground.
Replacement units, particularly if they are manufactured from materials other than terra cotta, should be given regular, careful inspection. The inspection will reveal whether they are wearing properly, and if they are in any way negatively effecting surrounding terra cotta units.
An Industry Reborn
Terra cotta ornamentation remains one of the most commonly encountered decorative building elements on pre-1940 buildings. Its popularity with the general public has proved as durable as the material itself.
During the 1980s, highly ornamented building design has returned to favor among architectural circles. There has been renewed appreciation for the incredible diversity of design achieved through the use of terra cotta elements.
It is now a matter of simple research to locate architects and consultants knowledgeable in terra cotta problems and solutions and manufacturers doing uniformly high-quality custom terra cotta work.
They are in turn finding an increasing number of masonry contractors well versed in installation, repair and maintenance procedures, upon whose expertise they can rely in executing the job.
WECK Glass Blocks
Quality Glass Products since 1900
NUBIO clear or goldtone
AKTIS clear only
X-RIB clear only
CLEAR VIEW clear only
FORTRESS = Security
The glass faces of this Glass Block are substantially thicker than normal Glass Blocks. Firearms tests in Europe showed this block to be bullet resistant. An excellent choice to deter vandalism or break-ins. The FORTRESS block has a hollow low pressure center, which gives it good insulation qualities.
FORTRESS clear only
For More Information, Contact: Glashaus, Inc.
P.O. Box 517, Elk Grove Village, IL 60007 312-640-6910
30 MASONRY-JULY/AUGUST, 1988