In recent years, metal roofing has become more and more popular both in new

construction and in remedial roofing. It is popular for many reasons including its long­term reliability with up to 50 years of service without need for maintenance. Metal

roofing material has also made advances in recent years and is much more efficient than in the old days. Still, architects designing commercial buildings have problems with metal roofs.

Commercial buildings including large multi-family properties and office space have very different requirements depending on the size, design, environment, location and tenant demands. However, metal roofs all have similar issues that an architect must be aware of. tensei shitara slime datta ken light novel

Engineers, construction firms and repairmen are constantly aware of these issues, so it is critical that architects also recognize the problems and build them into their plans.

The biggest issue is leaking during storms. To avoid this issue, engineers should be aware

of any misplacement or removal of the caulking-type or bar sealants in the longitudinal roofing seam regions. Without these firmly in place, the water is destined to slip through. One way to resolve this is to use an underlayment like the one produced in the Delta line by Cosella Dorken. It contains a structured separating layer for metal and pitched roofs. ze tian ji

Second, they should know that the failure to install an additional strip of sealant on the four-way panel laps can lead to additional seepage and water into the building. Next, they

should be aware of the tape sealant under the screw heads which may not be visible but are a common source of leaks. Lastly, they should be sure to do the caulking between the trim and underside of the roof panels. If the sealers are weak, you can test them using a special “feeler” tool to make sure the leaking is contained there.

Reliability of the material is another important issue. Make sure that you choose a metal roof that is slow to rust and will remain durable and reliable for many years. Stainless

steel is strong and durable, yet is likely to rust. Generally, using a zinc coating will help to prevent rusting from occurring as quickly. Aluminium is also becoming more popular because it is lightweight and resistant to rust. The drawback is that it is a little more

fragile and you will need to spend extra on the coating to get the right look. In any case, the exact material that you use is critical for the design and construction.

Similarly, you will have to choose your roof based on whether it will shed water (hydrokinetic) or resist standing water (hydrostatic). Most single family homes are hydrokinetic whereas most commercial properties are hydrostatic. Hydrokinetic roofs

require a supporting deck underneath the material along with a secondary waterproofing system. The system membrane can be damaged and leak as well, so it must be constantly checked.

Because commercial properties are more likely to be in urban areas or at least surrounded

by a parking lot, you will need to design a system that cleanly and silently channels the water from the roof to the sewer system. These hydrostatic systems are more expensive

 

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