If you notice any green or blue staining on the side of your hot water cylinder, it could be an indication of a minor weep on the cylinder. Whatever you do, do not touch these stains or try to clean them as this could make the weep more aggressive. If there are any damp stains under the cylinder, it should be seen to straight away by a plumber as the cylinder could burst at any moment causing serious damage. In the pictures below you can see a cylinder that had a small leak at seam at the base. Luckily we caught it just in time. if you notice any stains or are just looking to get a cylinder replaced call us on 086 810 0071 or visit our contact us page.