Damp Proofing

Definition

Damp Proofing is the treatment of concrete or mortar to prevent the passage or absorption of water, typically applied with a suitable coating or admixture.

Purpose

The purpose of damp proofing is to resist moisture intrusion into building materials, which helps prevent damage and deterioration caused by water. It ensures that structures remain dry and protected from the harmful effects of moisture, such as mold growth, corrosion, and material weakening.

Examples of Use

1. Foundation Walls: Applying a damp proofing coating to the exterior of foundation walls to prevent moisture from seeping into basements.
2. Concrete Floors: Using a damp proofing admixture in the concrete mix for ground-level floors to resist moisture penetration from the soil.
3. Retaining Walls: Treating retaining walls with a damp proofing membrane to protect against water absorption from the retained soil.

Related Terms

• Waterproofing: A more intensive treatment than damp proofing that can resist hydrostatic pressure and is suitable for areas with high water exposure.
• Admixture: A material added to concrete or mortar to modify its properties, such as improving its resistance to moisture.
• Hydrostatic Pressure: The pressure exerted by a fluid due to its weight, which can cause water to penetrate through building materials.

Notes

• Damp proofing is not designed to withstand significant hydrostatic pressure; waterproofing should be used for areas with high water exposure.
• Regular maintenance and inspection of damp proofing treatments are necessary to ensure their continued effectiveness.
• Proper application techniques are crucial for the success of damp proofing treatments.