Final answer:
Wait about 10 minutes for Sika Activator Pro to flash off before applying adhesive. If over 2 hours pass, reapplication is necessary. Always check the product's technical datasheet for precise instructions.
Step-by-step explanation:
When using Sika Activator Pro, it is important to adhere to the product's application guidelines for optimal performance and adhesion. Typically, you should wait for the activator to flash off—usually about 10 minutes—before applying the adhesive. However, if more than 2 hours have passed since the application of Sika Activator Pro, you would need to reapply it to ensure proper activation of the surface. It’s crucial to consult the product's technical datasheet for specific instructions related to your application to achieve the best results.