Metal mullions would be the vertical bars employed on doors and windows to divide them into more compact panes. Mullions are a challenge to clean and polish. Having said that, if not cleaned regularly, the steel can pit and begin to oxidize, necessitating high-priced replacements. Supported scaffolding — A brief https://andrecipci.bloggip.com/33789835/5-essential-elements-for-window-washer