Metal roof leaking is quite common in Malaysia due to the constant rainfall which causes rapid corrosion to the metals. The material used in metal roofs play an important role in preventing leakage. Better quality metal roof takes longer time to corrode. For example, AZ150 Zincalume metal roof can last for at least 25 years while normal metal roof will get rusty within 10 years. Apart from material, the thickness of the roof plays an important role as well. This is because the thicker it is, the longer the rust takes to penetrate through.
The standard metal roof thickness that we recommend is 0.47mm, this thickness is inclusive of coating and metal sheet thickness. These are some of the most common roof leaking issues: screw hole, roof hole (it could be as fine as sand size), flashing’s overlapping sealant disintegrated, inappropriate roof pitch or design and insufficient metal roof’s vertical overlapping.
Can be relatively difficult as we need to find the exact same roof profile (design) as the existing one. There are plenty of metal roof manufacturer in the market and their roof profile (design) are usually different due to copyright issue. Therefore, partial metal roof replacement can only be performed if we manage to find the same or similar roof profile.