Walls are constantly exposed to the elements, and the effects of wind and rain can take their toll on any building. This in turn will have an effect on the building structure and the integrity of your insulation. It can lead to damage and increased heat loss and more heating costs.
Capillary Water Uptake
When mineral building materials come into contact with water, depending on how porous the material is, some water will be absorbed.
The absorption of water depends mainly on the radius of the capillary pores in the building material. There are three pore categories:
- Micropores. These do not permit capillary transport of water and are impervious to water.
- Macropores (capillary pores). These pores are able to transport water within the building material.
- Air pores. These large pores are typically unable to transport water by capillary action.
The result of this water absorption may result in the following damage:
- Cracking due to the expansion and contraction of water
- Frost damage
- Dirt pickup
- Attack by fungi, moss and lichen
- Impairment of thermal insulation.