Purlins Spacing For Metal Roofing – Are you currently in the market for a new roof? If this is so, then you are going to discover there are lots of options available in the roofing market. These options can range from multiple variations of asphalt shingle types to many versions of metal panels. One of the numerous questions that are presented to an expert contractor would be ” can metal roof be set up over shingles?” . We’ll analyze these steps in greater detail to help determine if retrofitting a metallic roof over an existing asphalt shingle roof is a complex idea.
There are several things you must consider before choosing to put in a metal panel roof over an existing asphalt shingle roof. The very first thing that has to be determined is if the roof plywood or board board decking is solid and secure underneath the existing roof. Basically, the roof decking shouldn’t be damaged by water entering the old roofing in any pinhole or some other penetration within the subject of the roof. This will require a little investigative work before installing the new metal roofing. It’s highly recommended, to inspect all of roof decking and framing out of the attic side of the roofing.
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One has to look for dark spots, moldy spots, water paths on roof or plywood decking, and or some cracked or split rafters. This should be done with good care, for one mistake can harm your ceilings or cause substantial injury to oneself. Following these things have been validated to be okay, then, the next step is to begin preparing the roofing. New 1×4 timber strips must be installed vertically and horizontally every 24 inches throughout the roofing plane on the flat from bottom to top. It’s highly recommended to use wood screws to attach the newest 1 x 4 timber strips. Following this is complete and a holistic approach to the entire roof, then, it is time to put in the roof panels.
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Be cautious that all roof penetrations will need to be flashed with flashing boots that will work with the metallic panel chosen for the roofing application. In this step, picking the metallic panel is vital to the wellbeing of roof life. You will find metal panels that screw through to this would on the face of the metal that is simply nothing more than fancy barn tin. The problem with elaborate barn tin panels is that the rubber washers overtime will dry rust and fail, thus, creating a roof leak that can undermine all the reason a metallic roof has been chosen to start with.
A straightforward way to avert the face screwed roofing material would be to use a concealed fastener metal panel. These types of panels are known as standing metal seam. It’s highly recommended when picking a metal roofing to think about durability. Succinctly expressed, a concealed fastener panel will last the entire life of the metal with minimal likelihood of leaks other than failing roof penetrations over time.This is ordinary to all roofing types.