Laboratory Testing

Cleaning tests

With existing buildings, cleaning tests are conducted on samples from actual projects. Test results help the architect develop specifications for the projects. In some cases, we receive samples from projects that are in progress where problematic soiling or stains presents an unexpected challenge. With new construction, laboratory testing provides information about appropriate products and procedures for manufacturers. Also, this information is used by architects in developing specifications.

Adverse effects
Adverse effects tests generally are conducted on new construction projects. This testing is particularly important on projects when there is a concern about staining induced by inappropriate chemical cleaning.
General cleaning
With existing projects, cleaning tests to remove atmospheric soiling, biological growth, metallic staining, etc. are conducted following a preliminary examination. Cleaning products are evaluated to determine effectiveness. Recommendations are provided in a report that includes the optimum dilution, dwell period and rinsing procedure.
With new construction projects, cleaning tests are conducted to determine the optimal cleaning products and procedures that most efficiently remove mortar stains from the masonry surface. With these tests, mortar is applied to the masonry surface and allowed to cure for a specified period of days. Chemical cleaning products are evaluated at different dilutions, following by pressure water rinsing. Mortar removal is visually evaluated following drying. Recommendations are provided in a report that includes the optimum dilution, dwell period and rinsing procedure.
Paint stripping
Paint stripping tests are conducted to remove a variety of existing coatings, including graffiti. Alkaline and solvent-based strippers are evaluated in gel and paste forms. Testing helps determine the most effective dwell time.