Many building owners are unaware of the damaging chemical processes quietly taking place on their property. Not all water is created equal! Depending on what it contains, water can be a friend or a foe to your building exterior. What is hard water? Hard water is water with a high concentration of minerals, often including calcium, magnesium, or silicon. This type of water leaves behind unsightly mineral deposits – a chalky whitish coating – when it dries and carries with it an increased risk of corrosion and damage to your building. Don’t wait to address this problem until it is too late! HSG has decades of experience in hard water stain removal. We use extra-fine triple zero (Grade #000) steel wool with a special polishing agent to remove stubborn mineral deposits. This process is gentle enough not to scratch glass, but it is strong enough to make dulled, worn surfaces look bright and new. We guarantee your building and your business will look more inviting and professionally maintained with regular help from us!