Finlock guttering is very easy to spot once you know what you are looking for. Concrete gutters are designed in blocks. The concrete guttering would be fitted and then a mortar is used to fit and keep them in position and fill the small gaps between the blocks. Mortar failing- it allows water to seep through into your brickwork and overtime this will cause really serious damage. Collapsing sections of guttering – most likely to occur above windows. It allows rainwater to collect in that part of the gutter and potentially can cause further damage below. These types of gutters can pose some problems such as an impact on family’s health, property and your pocket causing many homes to spend a lot of money to repair, maintain and also to replace.