Aluminum Roof Sheet Technicality: How do I detect difference between 0.45mm and 0.55mm Aluminum Roof Sheet?

Hello Olufemi !, Thank you for submitting a question on how you can detect the difference between 0.45mm Aluminum roofing sheet from the 0.55mm Aluminum roofing sheets. The actual difference in these Aluminum roofing sheets is just 0.10mm which can be a bit difficult to know the difference by merely looking at the two roofing sheets. However, you can use the below methods to know the difference: Use a Micrometer screw gauge to measure the thickness of each Aluminum roofing sheet. This option will give accurate result because that is what each thickness measures. Meaning that the Micrometer screw guage result will not be more than 0.01 or 0.02 difference. You can use a micro-range vernier callipers to obtain the thickness of each Aluminum roofing sheet. This option gives you lesser accuracy to about 0.05 difference from the actual thickness but it is still an easier option. in case you do not have access to any of the two measuring tools mentioned above, you can try any of these options but the results will be based on your discreation and may be contested by someone who wants to deceive you: Hold the tip ends of each Aluminum roofing sheets and squeeze it to access its thickness. repeat the same action with that of other Aluminum roofing sheet. If the malleability is the same then the two has the same thickness but if one is less malleable, then that one is the thicker Aluminum roofing sheet. you can bring the two very close an look at their tip ends closely with one eye closed. This can assist you ascertain the one with bigger thickness. I hope these answers profer solution to what you are looking for ? If it does not, please drop more question to enable us assist you further. Thank you for being part of us.