Before writing a specification for your scrub seal project, review A165 Recommended Performance Guideline for Chip Seal provided by The International Slurry Surfacing Association (ISSA). The guidelines for scrub seals are very close to the guidelines of a chip seal with a few exceptions on the broom operation. This resource will help in design, testing, quality control, measurement and payment procedures for your project.
Note: It is important to keep in mind that ISSA includes recommended guidelines, not specifications. There are many important factors to consider after reviewing the A165, and your project may demand different processes and measurements from the included guidelines.
In this section, we will review the parts of a good specification and some best practices or tips. Here are the major components needed for a good specification: