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Use this CSI 3 part SimpleSpecs™ master specification to specify paint stripping and chemical masonry cleaning of existing surfaces.
Since there are a multitude of products that can be used for this purpose, field testing of actual substrate samples is typically required in order to determine materials and procedures which must be specified.
Chemical cleaners and paint strippers can be hazardous to persons and plant life and therefore should be used with extreme caution. Consult local codes and ordinances for regulations governing the use of these products and the containment of runoff.
In general, the weakest dilution of cleaning solution and lowest pressure spray are the most desirable. Strong cleaning solutions can burn or discolor the surface, and high pressure water can cause physical damage to the masonry. Water and chemical cleaning introduce moisture into the masonry, which can cause efflorescence, freeze spalling, and interior moisture accumulation.
Sandblasting of historic masonry is generally not recommended due to the high potential for physical damage to the masonry.
For additional information on this subject, refer to the following Preservation Briefs by the National Park Service, www.nps.gov:
– No. 1 – Cleaning and Water Repellent Treatments for Historic Masonry Buildings.
– No. 6 – Dangers of Abrasive Cleaning to Historic Buildings.
Also, see Common Problems with Brick Masonry
Related SimpleSpecs™ master specifications:
04 21 33 – Adhere Brick Veneer
The SimpleSpecs™ master specs concept
Design professionals are accustomed to seeing lengthy project specifications, so why is SimpleSpecs™ so short?
Specifications have grown evermore wordy over the years for several reasons:
The mistaken belief that specifications must be lengthy and legal-sounding to be enforceable. In fact, quite the opposite is true. Having shorter, easily understood specifications makes us less likely to have problems in the field.
A belief that having lots of words protects us from a Contactor making mistakes. There is no way to include enough statements to protect yourself from a bad contractor, regardless of the length of your specification.
Our desire to be in control of the project by specifying means and methods instead of including simple, enforceable statements.
Easier to Edit
SimpleSpecs™ is written as a series of Microsoft word files that include statements that affect construction costs or overall quality and are far simpler to edit than other master specification systems.
Each SimpleSpecs™ specification section is non-proprietary and includes three manufacturers that meet the specified reference standards, descriptive, or performance-based requirements. They are written to allow any listed manufacturers to provide the specified products.
Hidden Guide Text
Each SimpleSpecs™ specification section includes hidden text to inform and guide users in editing the specifications to suit project conditions.
SimpleSpecs™ sections are edited using pre-defined options that are contained in [brackets] or by selecting optional text separated by "OR" statements. Paragraph and page numbering are included as automatic codes, eliminating the need to renumber when revisions are made manually. Global changes to headers, footer, terms, font colors and phrases are easily updated using a third-party search and replace software, available through ZeroDocs.com.