posted Mar 11, 2016, 12:59 PM by Diane Maimone
updated Mar 16, 2016, 9:20 AM by Monika Clark
Over the years at Presto Restoration Products & Services, we have witnessed countless commercial buildings with precast sealed with silane. This material performs poorly, causes stains on glass and metal surfaces and is harmful to the environment. Unfortunately, the water repellent most commonly used today to seal architectural stone consists of 40% solid content silane. In our experience, 40% silane is one of the least effective product options available for vertical precast surfaces, especially when flush-mounted windows are present.