Concrete Gutters can impact your family’s health, your property, and your pocket!
Age and weather conditions will cause concrete gutters and Finlock gutters to move and shift, resulting in breaks of joints between blocks causing leaks, building damage and possible collapse of external guttering. This also leads to problems with damp arising in the walls and in the loft, as well as potential mould growth.
Replacing your concrete gutters will put a stop to this, and prevent any further collapse of the Finlock concrete guttering. Thermal bridging and thermal differentiation are other problems that only our guttering will solve.
HISTORY:
Concrete gutters or Finlock gutters were installed during the 1950s, '60s, and '70s to carry out a dual function of closing the cavity at the top of the brickwork and providing a wrongly assumed maintenance free gutter system.
Concrete Gutter Problems
Concrete Gutter Composition:
The gutters comprise of units that vary in length between 200mm and 600mm. The joints have either been sealed with bitumen or a similar substance, or the gutters are lined (often with a torch on mineral felt).
GutterLining:
When the gutter lining starts to deteriorate, the gutters leak water into the wall cavity, and this water can also seep into the house causing damage to the internal plaster.
This problem is often compounded by differential thermal movement in the concrete gutters, which causes the concrete to crack. Simply relining the gutters will not eliminate bridging cold, therefore is not a solution to eliminate the multitude of issues that arise from Finlock Concrete Gutter deterioration.
Differential Thermal Movement:
Differential thermal movement is caused by different materials (concrete, tar, cement etc.) expanding and contracting by different amounts as the temperature changes. Such differences have caused the gutter sections to move relative to each other, so instead of providing a smooth run for water, linings become damaged and water can sit in the gutters. This leads to dampness in the cavity walls and the concrete deteriorates further over time.
Thermal Bridging
Thermal bridging or bridging cold has become a major problem with concrete Finlock gutters due to central heating and double glazing being installed in homes. As a result, the average temperature inside properties is now higher than in the past.
The Bridging Cold:
The bridging cold manifests as a black mark where the ceiling meets the wall inside the property. This results in the wallpaper coming away at the top of the wall. In bathrooms, tiles can often become dislodged.
In the summer this is not as great a problem as in the winter. When the heating is on the Finlock gutters become very cold. Moisture in the warm interior air condenses on the cold wall, which leads to mould and damage to interior decor.
The problem is Caused by the Following:
The air inside the house will carry more water as the central heating raises its temperature.
The Finlock gutters allow cold to cross the wall and create a cold strip where the internal wall meets the ceiling. Condensation forms where the warm air meets the cold surface (on a much-reduced scale of a mirror in a bathroom). In bathrooms, it is much worse, particularly in shower cubicles.
Solution:
Cutting gutters off does reduce this problem substantially, as a 22mm wood and 18mm PVC layer will be installed, insulating the outside of the wall. This will reduce bridging cold.
By Fitting Leafguard (also known as Snowguard), no ice can form in the gutter, further reducing incidents of bridging cold.
If you're experiencing any of the above issues with your concrete gutters, call TLG Gutters today on [tel] to find out how we can help!
Frequently Asked Questions
Temporary repairs may be possible, depending on the nature of the issue/s you are experiencing and severity of the damage. However, with all temporary repairs, these are not lasting, so you need to be aware that you may be paying more in the long run to resolve ongoing issues.
There are companies who do lining of the internal gutter, which may last between 4 - 8 years, depending on the type of lining, skill of the fitters and so forth. However, this does not prevent the continuation of the natural degradation of this type of gutter, and if it is cracking, then you need to be mindful that it is already damaged internally...and could break off and fall.
A handyman may be able to polymer external cracks in the short term, but again, this solution would be temporary and will only be as good as the workmanship and products used.
We however, do not repair concrete gutters, as it is not possible to make a lasting repair to the internal/ external cracking and general concrete degradation in any type of concrete / finlock gutter. We only do complete removal and replacements of this type of guttering. This is the only sure-fire way of ensuring the problems are gone forever!
The cutting off of the concrete gutter take (on average) about 30 minutes for between 6 to 8 meters of concrete gutter. The removal and replacement of say 12M of gutter (standard front and rear), can take between 1-2 days, depending on weather conditions, available light and start and finish times.
Unlike UPVC Guttering, seamless aluminium gutter has no joints in its system. The lack of joints in seamless aluminium means that there is no opportunity for the gutters to leak, as is common in traditional jointed UPVC guttering products. A no joint system means that water can be carried safely and effectively away from your home. If your gutter system has leaks, water can spill down the walls of your home, creating fascia and soffit rot, build up of dangerous internal mould and mildew, as well as possible foundation damage and basement flooding.
Furthermore, UPVC joints are not covered under warranty or guarantee from the manufacturers, and their distributors alike, as the failure rate on these items is generally high. Rubber seal failure, is perpetuated by the sand residue off your roof tiles getting into the rubber seal area. Theses abrasive particles wear the rubber seal away with the contraction and expansion of the gutter over time.
In addition, aluminium guttering is expected to last for 30 years and more, which is longer than the life expectancy of the uPVC equivalent. Therefore, they constitute better value in the long run.
Aluminium gutters are extremely robust, hard wearing, non-fading and 100% recyclable. However, with UPVC guttering, their colour may fade somewhat after years of continuous weather exposure, and with extreme temperature changes can cause splitting and cracking over time.
Aluminium gutters are able to hold more water volume than any other type of gutter system and therefore are ideal for periods of heavy downpours.
First and foremost, consult the deeds to your property to see what they say about the shared gutter and drainage.
Often on semi-detached properties and mid-terrace properties, there is only one downpipe servicing the attached properties.
Even when there is one downpipe on each side of a semi-detached property, due to settlement of the properties over time, the level gutter may have subsided on one or both sides. This may in turn create a gentle angle in the flow of water between the adjoining properties, which means that the water may generally only flow towards one of the two existing downpipes anyway. If you then close off where the new gutter will join the existing remaining concrete gutter, the flow of water may pool on the neighbour’s side where it adjoins your gutter, and in turn overflow and cause water ingress into both their and your cavity wall. This could lead to internal and external property damage.
If there are adequate downpipes in place already on your neighbour’s side to cope with this issue, then it is possible that you can close the gutters off. It is best practice to liaise and agree with the neighbours in advance of the action you intend to take.
If you have adequate drainage facilities in existence on your side of the party wall, it is no problem to add additional downpipes as required to facilitate the flow of water as appropriate.
Our custom designed and manufactured aluminium joints ensure we are able to seamlessly join your new aluminium guttering rainwater system to the remaining concrete gutter on your neighbour/s side, ensuring that any flow of water between the adjoining properties can continue uninterrupted.
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