How to Fix Concrete Gutters Causing Damp

Concrete gutters, also known as Finlock gutters, can be particularly problematic. They present a myriad of problems for homeowners. Some of the common concrete gutter problems are listed below.

Lining failure

The expansion and contraction of the lining occur due to changes in temperature. The changes can then lead to the separation of weaker points in the structure, especially at the junctions. Because of this, the concrete troughs can potentially crack, which creates access points for water to enter. Lining failure is incredibly detrimental and Finlock gutter removal/replacement should be considered immediately. In such cases, you may be tempted to opt for a repair, but a concrete gutter replacement is the best solution for your home, as well as being the most cost-effective overall.

Cold/thermal bridging

Cold/thermal bridging can be particularly irritating in all weather conditions and can affect your energy consumption and how well your home remains insulated.

External leaks


Concrete gutters can function as door and window opening joists, but if there is no adequate filling when they are fixed, they will begin to sag. Sagging can also occur from badly replaced windows which can become difficult to open or close. Additionally, modern guttering is tilted to allow rainwater to run away and down the downpipe. Concrete guttering on the other hand, provides no escape for the rainwater, which will remain sat in the guttering and cause more damage over time. This can also cause sagging, and in some cases, collapse.

Damp and mould

One of the most common issues faced by owners can be concrete gutters causing damp. When water is left inside the guttering instead of being drained away it can cause issues such as mould growth and damp. Both can be particularly bad in the winter months and have negative effects on the beauty of your home, and on your health. Mould and damp will need correcting immediately and can return if the concrete gutters remain.

Damage to interior

Water damage, mould and dampness are huge issues. Through the growth of damp and mould, the wallpaper can begin to come away from the walls, water stains and damp can be seen, and paint can be ruined. All destroying the beauty of your home. Redecorating is essential but can be a waste of time as it will only be a matter of time before the concrete gutters fail again. To avoid consistent repair charges and return of mould and dampness, the gutters will need to be replaced entirely. Concrete gutter removal and replacement can initially be expensive, however eventually, it will be the most cost-savvy thing to do. Concrete gutters consistently have issues and though repairing them is the cheaper option initially, they will never be faultless.

If you are fed up with the issues caused by your concrete gutters, or someone who has recently discovered their home has concrete guttering, an entire removal and concrete gutter replacement may be the best cause of action. Especially if you are suffering with damp and mould.

Damp and mold

Why concrete gutter replacement?

Removing the concrete gutters is a relatively effortless process, whereby we will erect scaffolding and take down the gutters to replace with something more durable and better suited to adverse weather conditions and water drainage. This is typically uPVC. Once the new guttering is installed it will take around 8 weeks for the damp and mould to clear up. However, rest assured, it will clear up.

Improved energy efficiency

When you remove and replace your concrete gutters, your new guttering will improve the insulation already present in your home. The new installation will help prevent any unwanted cold air from seeping into your home, improving your home’s energy efficiency and internal heat for the winter months. This is especially important now due to the increase in energy prices and could help you save money on your energy bills.

Concrete gutter removal cost

Concrete gutter removal cost may be on your mind as a potential setback. Repairing the gutters will be cheaper, but it will only fix the issue for a short time. Concrete gutters always present issues and therefore the only solution is to replace them entirely. This can be quite costly; however, it will work out the cheapest solution in the long term. If you are interested in replacing your concrete gutters, contact us for a free quote today.