Environmental conditions – particularly weather – can impact the performance of tape during installation and afterwards. Temperature is one of two primary consideration factors:
- Application temperature (conditions when tape is applied) can affect the adhesion of a tape based on whether or not it is too hot or too cold. Adhesion systems are thermoelastic, meaning they have properties of both a solid and liquid. If the temperature is too high, the adhesive is likely to take a liquid-like property and could flow like a liquid, not making a strong bond with the surface. If it is too cold, an adhesive may become brittle and glass-like, or solid and lose its ability to adhere to a surface.
- Service temperature (conditions after tape is applied) can also impact tape’s performance. Rigorous thermal cycling – going from hot to cold and back to hot, and vice versa, will put the adhesive system under stress. The more severe the thermal cycling, the harder it is on the tape’s adhesive system.
The second primary consideration factor is humidity. This can affect tape’s adhesion. High humidity, for example, could result in a thin layer of moisture on the surface you are trying to stick to, which weakens the tape’s ability to adhere. To prevent this from happening, it is always recommended that surfaces in need of HVAC tape are clean and dry.
The quickest way to help ensure proper application for full system closure? Be sure you understand the jobsite conditions before you choose a tape.