Positive pressure occurs when too much air flows through a building’s HVAC system without proper ventilation, and is usually the result of installing new windows, doors, or insulation. While such renovations improve efficiency, this resulting positive pressure can also cause damage to a building’s roofing system. Fortunately, the roofing contractors at My Roofing Co. in Kaneohe, HI, say there are solutions to the problem.

What You Should Know About Positive Pressure

How It Affects Roofing Systems

Air that used to escape through inefficient walls, doors, and windows must find a new outlet—often, the roof deck. The trapped air pressure can tear or loosen some of the roof’s parts over time, including adhesives and induction welds. This weakening of your roofing system can allow moisture or pests to infiltrate your home, leading to mold and structure damage.

How It Can Be Fixed

Some positive pressure is good, but too much can lead to significant roof repairs. Prevention is key, so talking to your roofing contractor during renovations should be your first step. An HVAC unit’s air input can be adjusted, or more exhaust fans or vents can be installed to decrease the buildup of pressure. 

When a Roofing Contractor Becomes Necessary

Some commercial buildings, such as hospitals, require higher levels of positive pressure to operate, so a new roofing system could be needed. In some cases, roofs have already been damaged by positive pressure and need to be replaced or repaired. Contact an experienced roofing company to learn more about long-term solutions.

Residents of Kaneohe can get expert advice about their roofing systems from the roofing contractors at My Roofing Co. Their licensed team of skilled roofers can even work with your HVAC contractor to resolve any positive pressure issues you’re experiencing. Call (808) 352-7272 or visit their website to schedule an appointment today.