Inspecting metallic roof rarely happens, so when it will it’s a mixed blessing. The metal roof is generally well built, low maintenance, and engaging yet it may be harmful to traverse and poses significant challenges towards the inspector.
Standards of Practice stipulate that inspectors shall traverse the rooftop or document the main reason(s) because of not doing this. However, even putting aside the potential risks of traversing steep roofs, just walking roofs metallic, clay, or slate is presuming a particular degree of liability (both to a person’s body and also to the roof’s integrity) and it is usually suggested against by alucobond panel.
The metal roof is usually high quality, possibly one step lower from slate or clay roofs. It’s not affordable and so alone often it gives inspectors pause. However the client needs to consider which will entail a sizable investment also, and that he expects the inspector to perform a thorough job.
Roofs metallic have a lot of advantages. They’re lightweight, therefore the inspector does not desire to make a structural assessment to find out if there’s sufficient support. (Unless of course a home is relatively recent, it’s highly likely the original roof is made of the different material.) The metal is powerful and rigid having a fine surface. What this means is it tends to not accumulate excess snow that may cause leaks or damage.
Its strength and rigidity does mean that common issues with shake or shingle roofs (whether made from asphalt or cedar plank), for example cupping, curling, splitting, and so forth, aren’t issues that should be investigated. Other advantages are that metal isn’t combustible which roofs made from it have relatively couple of joints, converting into less places to leak.
The disadvantages of metal roofs are exactly what the inspector needs to focus his attention. A significant disadvantage is rusting. Manufacturers perform a good job of coating their materials and protecting them from corrosion, but rusting still occurs. Likewise, one must look for dents. A much more critical concern is that metal expands and contracts with alterations in temperature, making these roofs prone to buckling. Because of this, panels have a tendency to come no wider than twenty inches. Installers need to make room for thermal movements, and inspectors have to make certain buckling hasn’t happened.
Metal roofs are available in two fundamental configurations: shingles and panels. The inspector is worried less using the configuration however with the fabric used, the flashing, the fasteners, and also the joints. Shingles come in a vast array of appearances, frequently imitating clay tile, wood shakes, or wood shingles. However, there’s almost no overlap, leading to exposure nearing 100%. Most shingles are constructed with treated aluminum or steel and coated with paint, acrylic, or stone granules. Their fasteners are nails, clips, or screws.