The Problem with Finlock Gutters

Finlock gutters are concrete gutters. They were originally built using concrete due to the scarcity of other materials in the war effort. Finlock gutters are mostly found on homes that were built between 1950s-1970s and though they aren’t very popular, they can still be found across the UK.

Though they were reliable when they were first built, Finlock gutters now present a lot of problems and as such, homeowners are seeking Finlock gutter replacements and Finlock gutter repairs to rectify the issues.


Finlock concrete guttering problems (2)

Common Finlock Gutter Problems

Lining failure

Lining failure occurs due to the expansion and contraction of the lining because of changes in the temperature. The thermal changes can lead to weaker points of the structure separating. Because of this, the heavy concrete troughs are prone to cracking, creating access points where water can enter and cause further issues. Lining failure can be incredibly problematic and should be addressed immediately as it can be costly to rectify. In cases such as these, a Finlock gutter repair may appear to be the cheaper solution. However, these issues will still return unless you remove the old Finlock gutters and opt for a Finlock gutter replacement.

Cold/thermal bridging

Cold/thermal bridging is when cold materials meet warmer ones, which results in the cooling down of the warmer material. This can be problematic in all weather conditions and can even affect your energy consumption and how well your home insulates. When these problems arise, it can cause the wallpaper to peel away at the tops of the wall.

Sagging/uneven gutters

Finlock gutters act as an effective door and window opening joist. However, if there is not adequate filling or strengthening when they are fixed, they can begin to sag. Sagging can also result from badly replaced windows, which can become increasingly difficult to open or close, as well as ruin the beauty of your home.


concrete guttering replacement Before & after

No pitch on the gutter

Modern guttering is tilted to allow rainwater to run freely down the downpipe and away from the house. Finlock gutters, however, were installed on the top level of the walls and as such, the rain has no easy escape and will end up sitting in the gutter and causing more damage over time. In some cases, rainwater will gather and can lead to the gutter collapsing.

Damp and mould

Because Finlock gutters aren’t very good at draining away water, the water remains in the gutter and can cause issues with the fabric of the building. This increases risk of mould and damp, which can not only affect the beauty of your home. But can also be problematic for you and your family’s health. The effects of damp and mould are felt more in the winter and harsh weathers

Damaged interior

Damp and mould can cause serious issues for the interior of your home. The damp and mould can grow substantially causing the wallpaper to come away from the walls. As well as this, water stains and damp can appear on your walls. Redecorating will be the only solution, however, unless you get a complete concrete gutter replacement, the problems will only return.

Finlock gutters can be incredibly problematic for both the inside and outside of your home. Their main issue is their lack of reliability with water. Once the concrete has expanded, cracks form and water can seep through, causing issues such as rot, collapse, sagging and ‘puddling’. All of which can be avoided if the gutter is replaced entirely. Long term effects of the gutters can be damp and mould growth, which can be very bad for your health and especially your respiratory system.

Because of all of the issues of concrete gutters, is it recommended to invest in a complete Finlock gutter replacement to avoid future repairs and a large bill. If you or someone you know is seeking a concrete gutter removal or concrete gutter replacement, contact us today for a free quote.

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