22/09/2024
EPISODE 2: TYPES AND CAUSES / SOURCES OF DAMPNESS & WATER INGRESS:
In EPISODE 1; We discussed the definitions / meaning of dampness & water ingress.
In this Episode we will explore the types, various causes and sources of dampness & water ingress - And probably answer the question: “Is Dampness Normal?”
TYPES OF DAMPNESS:
1. Rising Damp: This occurs when moisture from the ground moves up through walls and floors by capillary action. This problem is often due to the failure of a damp-proof course or the absence of one – especially in old buildings.
2. Penetrating Damp: This happens when water infiltrates through external walls and roofs due to cracks, poorly sealed joints, poor masonry, poor maintenance, damaged roofing, weathering or construction defects.
3. Condensation: This type of dampness occurs when excess moisture in the air condenses on cooler surfaces inside the building. It is commonly seen in bathrooms or kitchens.
4. Interstitial Condensation: This is simply when condensation occurs within the walls or ceiling (within the fabric) of the building itself.
Each type of dampness involves a combination of factors, hence identifying the exact cause of dampness is essential for determining the appropriate solution. A thorough inspection is usually recommended.
CAUSES / SOURCES OF DAMPNESS & WATER INGRESS:
1. Construction Defects: Poor construction practices, such as, incorrect installation, use of improper materials and inadequate sealing can lead to damp issues.
2. Rising Water Tables: Changes in groundwater levels, due to heavy rainfall or nearby construction activities, can sometimes lead to increased moisture levels around the foundation of a building and cause dampness.
3. Faulty Damp Proof Course (DPC): The DPC is a barrier installed to prevent rising damp. If it fails or is absent, it can lead to moisture issues in the walls.
4. Surface Water: This is water which pools (accumulates) on surfaces and seeps into the structure to cause damp problems.
5. Leaking Pipes: Faults in plumbing & heating systems like broken or corroded pipes and can cause leaks within the systems (Internal Dampness), which can lead to significant water damage and mold growth over time.
6. Faulty Roofing: Damaged or poorly maintained roofs can allow rainwater to pe*****te the building. This includes problems with roof coverings, flashing, and chimneys.
7. Poor Drainage: Inadequate drainage around a building can lead to surface water pooling, which can eventually seep into the structure to cause damage.
8. Ventilation Problems: Insufficient ventilation in a building can lead to high humidity levels, which contribute to condensation and damp problems. This can be due to poorly designed ventilation systems, blocked vents & lack of airflow.
Issues like clogged gutters, defective downpipes, and improper grading of land can also contribute greatly to water ingress.
We still haven’t answered the QUESTION; Is dampness normal...?
Join me in the NEXT Episode as we answer the question, and also discuss TREATMENTS FOR DAMPNESS & WATER INGRESS.
