Effect of Acidic Rain-Water on Selected Galvanized Aluminium Roofing Sheets

Nigeria's climatic conditions-characterized by high humidity, substantial rainfall (especially in coastal and tropical regions), and prolonged solar exposure-accelerate the corrosion of roofing materials.This undermines the sustainability of infrastructure by reducing service life, leading to structural degradation and heightened vulnerability to leaks.Compromised roofing systems can facilitate water infiltration and mold growth, posing significant risks to human health and general well-being, and emphasizing the need for climate-resilient building solutions.This research was conducted on selected galvanized aluminum roofing sheets obtained from the open market in Nigeria.The samples were cut to a small size (25mm by 25mm) and immersed in Rainwater, Hydrochloric acid solution (HCl), Sodium chloride solution (NaCl) sulfuric acid (H2SO4).The experiment was performed over 1080 hours, and weight loss measurements were carried out for each sample.In a Hydrochloric acid (HCl) solution, weight-loss experiments.It is predicted that the imported roofing sheet 2(IMS2) and sonic roofing sheet (SNL) are more resistant to Rainwater and hydrochloric acid environments, with the lowest corrosive rate of 0.8g, and thus more stable.While in Sulphuric (H2SO4) environments, Sonic roofing sheet is more resistant and more suitable with a lower corrosion rate of 0.9g.In Sodium chloride (NaCl) environments, imported roofing sheet 2 (IMS2) is recommended, with a lower corrosion rate of 0.5g, and thus more suitable and stable.