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Choosing the right roofing screws is imperative for the proper functioning and the longevity of the entire roofing system. With numerous options offered, it is easy to get confused over which screws would cater best to an individual’s requirements. In this guide, we cover the basics you need to know about roofing screws, especially focusing on material, coating, thread type, and size.
What Are Roofing Screws?
As the name suggests, screws of this kind are meant to secure roofing materials to the building's frame. Roofing screws have various distinct characteristics as compared to outdoor screws. They are mainly manufactured out of carbon steel or stainless steel, thus providing varying levels of protection against rust and corrosion. Knowing the materials that compose the roofing screws is the very first step in making a sensible choice.
Material Matters
The type of material used for the roofing screws affects their strength and resistance to the outdoors. Stainless steel screws, for example, do not rust or corrode which can be useful for coastal regions with high humidity. Conversely, galvanized screws are coated with zinc, offering a cheaper option that still defends against the elements adequately. Think about the weather in your area when picking screws and choose a material that can resist the local weather conditions.
Coating and Corrosion Resistance
Apart from the base roofing materials, the roofing screws type of coating can apply also helps in resisting corrosion. Some screws have a polymer and epoxy coating which offers the best protection against rust in extreme environments. Always check the manufacturer's guidelines for the screws’ coating to ensure it fits the requirements of your roofing system. As a rule of thumb, it is best to choose screws that have a coating longevity of more than the lifespan of the roofing material on the roof.
Design and Type of Threads
The thread type of screws used for roofing has a specific impact on functionality. Threads can either be classified as coarse and fine. Fine threaded screws are more common when it comes to metal roofing as they are less likely to strip. Coarse threaded screws are applicable when dealing with wood. Moreover, some of these screws have self-drilling points, which means they do not require pre-drilling and are faster to install. Evaluate the type of roofing material you have and select the appropriate thread type that matches your needs.
Factors Related to Size and Length
Like all other fasteners, roofing screws also have dimensions including size and length which should be accounted for. It is desirable for the length of the screw to be enough to cut through the roofing material to the supporting structure. In most cases, screws should exceed the thickness of the material being held down by at least one inch. For the particular roofing system in use, always check what the manufacturer suggests regarding screw dimensions.
Latest Trends in the Industry and New Ideas
At the same pace as the development of other sectors, changes are also taking place in the technology and materials used for screws in roofing. Recent developments indicate that there is a move towards coatings that are more eco-friendly and add structural strength at the same time. Furthermore, new developments in screws such as better thread patterns, self sealing features, and alignment mark indicators are boosting the reliability and ease of installation. Following these developments helps homeowners accomplish smart planning for roofing projects and choose the most appropriate roofing screws for their requirements.