Rainwater Ingress

What is rainwater ingress?

In 2018, less than half of the properties we inspected warranted damp proofing treatment only. In many cases, there is another cause of damp, or in some cases, several causes. One of the most common, is rainwater ingress.

When water enters the building, usually via an external defect, this is known as water ingress or penetrative dampness. The main causes are:

  • Blocked or defective guttering
  • Perished mortar beds (pointing)
  • Defective roof coverings
  • High external ground level
  • Blocked cavities within walls

How to spot rainwater ingress

Water ingress is often misdiagnosed so it is important to have the problem checked out properly by a CSRT qualified surveyor (FAQs) Some of the classic signs that you need to get your property checked out for water ingress are:

  • Damage to plastering
  • Decorative spoiling or peeling wallpaper
  • Plaster straining
  • Salt damage

An extreme example of the type of damage blocked or defective guttering can do

How to treat rainwater water ingress?

The key to treating water ingress is first to ensure that the problem has been diagnosed correctly.

Treatment will vary depending on the cause of the problem, so it could be anything from replacing a leaking gutter to replacing roof coverings and repointing walls.  

However, if the water ingress has caused salt contamination which has penetrated the walls, the affected plaster may need to be replaced in order to solve the problem completely.

If you suspect that your property may be suffering from water ingress, contact us today and we’ll arrange for one of our CSRT qualified surveyors to come out and take a look.

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