17 Causes of a Leaky Roof

Leaks in your roof are never a good thing and they will always need to be fixed. The most important questions to find the answers to when you have a leak are:

  • How difficult is it to rectify the problem; and,
  • Has the leaked water caused any further damage?

Here are 17 of the most common causes of leaky roofs.

1. Age – roofs don’t last forever. They can last for a long time, of course, if you take care of them. Age, however, is one of the leading causes of leaky roofs.

2. Broken tiles – tiles are very effective at keeping water out of your home, but that effectiveness stops when they are cracked. Unfortunately, many cracks are difficult to see from the ground but that won’t stop them causing damage.

3. Flashings – flashings that are damaged or have started to rust will develop cracks and holes which will let water into the structure of your home.
 
4. Debris – leaves, grime, twigs, and other debris builds up on your roof over time. If you don’t remove this debris, it will prevent the proper flow of water which can, in time, lead to leaks.

5. Ridge capping – if your ridge capping becomes dislodged, it will allow water in.

6. Seal damage on anchor points – the anchor points on your roof will be sealed to stop water getting in between. If these seals become damaged through wear and tear or any other reason, leaks will occur.

7. Lose tiles – lose tiles can also cause leaks. In fact, if tiles are in any position other than the right one, water can get in.

8. Roof vents – the seals around roof vents stop water getting in through the small gaps between the roof and the vent. These seals can become worn or damaged, however.

9. Poor construction – another cause of water leaks that we unfortunately see is poor construction. If the roof is not built properly in the first place, it won’t keep out water.

10. Clogged gutters – if you don’t clear out your gutters regularly they will back up which can result in leaks.

11. Holes – holes in the structure of your roof will cause leaks too. Examples include holes left by the installation of a roof antenna or for plumbing pipes.

12. Missing shingles – this is another one that can be difficult to see from the ground, but it could be a major contributory factor for why you have a leak.

13. Poor maintenance – your roof needs properly looked after to ensure maximum performance. Maximum performance in a roof means keeping 100 percent of the water out of your property. Therefore, if you don’t maintain your roof, water will get in.

14. Complex architecture – another common cause of leaking roofs is simply the architecture of the building. Complex architecture can look good, but it often leaves more areas where problems can arise that result in leaks.

15. Skylights – just like with vents in the point above, the seals around your skylight can become damaged over time and will then start letting in water.

16. Chimneys – chimneys deteriorate with age too, particularly the flashings and mortar. Therefore, your leak could also originate in the chimney, if you have one.

17. Rusty valleys – roof tiles don’t rust but if your house is older it might have galvanised metal valleys. These can rust and cause leaks.

By being aware of the above causes of a leaky roof, you can take steps to prevent them happening in your home.

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