![]() Fasteners with rubber washers are self-drilled approximately every two square feet. Clips fasten to the purlin, and the fasteners are concealed once the metal laps on the panels are seamed or crimped together with generally a sealant underneath. ![]() Fastener issues – There are two types of metal panel attachments – clips and fasteners with rubber washers.Your metal roofing provider should be well-informed on metal compatibility issues to help you prevent problems from occurring. Dissimilar metals will cause a negative reaction when situated together, which can cause cracking, rust spots and prohibit water flow. Specific materials should be used for metal roofs so that corrosion and rust do not occur. However, not all metals perform the same and some are incompatible when used together. Incompatible metals – There are many types of metal roofs, such as copper, steel, stainless and galvanized metal.Caulking can be used to fix punctures but should only be considered a temporary fix. Sharp objects falling onto your roof can also contribute to punctures. Also, equipment should never be dragged across a metal roof. For those who need access to the roof, specific walkways and guidelines should be in place to not crimp panels and to stay a safe distance from skylights. Punctures – Punctures often occur due to heavy foot traffic on the roof, such as during construction, maintenance or HVAC equipment installation. ![]() If a repair product is used that doesn’t allow for the proper elongation (or flexibility), the panels will continue to move but the patch will not, causing more issues than the original roof leak. Movement – A metal roof should be designed to move, allowing for water to flow off of it.The best way to prevent oil canning on your metal roof is proper installation of high quality-metal material by a trusted and experienced roofing contractor. Most of the time, oil canning does not present a hazard to the structural integrity of your metal roof. Oil canning is an inherent characteristic of light-gauge, cold-formed metal products with broad, flat areas. Oil canning – This is generally considered the perceived waviness in the flat areas of metal panels.Deflection – Crimped or bent panels can lead to ponding water on your metal roof, which can be a direct cause of leaks and rust.Monitoring for rust should be done at least as often as during semi-annual inspections and a rust inhibitor, which forms a surface on panels, should be applied on any rust to stop it from forming in the future. Most metal roofing is made of galvanized metal or is coated to prevent rust from occurring, but ponding water or heat from direct sunlight can both wear the roof’s protection away over time. When rusting occurs, the oxides expand and occupy more space than the original material. Rust is a reddish or yellowish-brown flaky coating that is formed on iron or steel by oxidation, especially in the presence of moisture. Surface Rust – Surface rust can become a major problem if left untreated.The 7 most common metal roof anomalies include: ![]() Being disciplined with inspections can result in early detection of the most common types of metal roof anomalies that lead to those pesky roof leaks. While you might periodically take a look at your roof, it’s recommended to have a well-trained, experienced roofing technician perform a thorough inspection of your metal roof at least twice per year. A major difference between a metal roof and a traditional flat, built-up, modified or single-ply roof is that metal roofs are designed for water flow, meaning there should never be any ponding or standing water on the roof for any period of time. Water, the silent enemy of metal roofsĪlthough metal roofs wear extremely well, they have unique characteristics that, left unaddressed, can spread, worsen and lead to major damage. Ignoring what you might think is minor roof damage – or worse yet, undetected damage – can lead to major water intrusion issues down the road to not only to the roof itself, but also to the building’s insulation and structural components, as well as inventory, equipment and furnishings. Your metal roof might be out of sight on a daily basis for you, but don’t let it be out of mind.
0 Comments
Leave a Reply. |