When it comes to any kind of construction job, you might think that a screw is simply a screw and what kind you use won’t really have an effect on the overall project. This is a common misconception. In roofing, even something as seemingly unimportant as the choice of screws can have a huge impact on the overall quality of the project. Professional roof repair and installation companies always take great care in choosing the correct materials for the job, even down to the screws. Here’s why.
Galvanic corrosion, also known as bimetallic corrosion, is an electrochemical process whereby one metal corrodes in preference to another metal that it is in contact with through an electrolyte. Simply put, when two metals that don’t like each other are in electrical contact, galvanic corrosion can occur. Another way to put it is the more closely matched two metals are, the lesser the potential difference and the lesser the galvanic current.
Remember, a significant portion of your roofing materials are made of metal so corrosion is a very real issue. A good roofing company will take this into consideration and will only use screws that are compatible with your roof to avoid corrosion.
One good example is using zinc-coated steel screws to hold your metal roof in place. Another is using stainless steel screws for your galvanized or steel gutters.
From minor roof maintenance services to emergency storm damage repair, you can count on the professionals over at Roof Masters to exceed all your expectations. To schedule a consultation with one of our experts, please give us a call at (301) 230-7663. Alternatively, you can fill out our online contact form to request a free estimate today. We happily serve homeowners in Montgomery County, MD, as well as the surrounding communities.