Moisture Barrier

Definition

A membrane used to prevent the migration of liquid water through a floor or wall.

Purpose

Moisture barriers protect buildings from water infiltration, which can cause structural damage, mold growth, and other issues. They are essential in construction to ensure the longevity and integrity of floors, walls, and foundations.

Examples of Use

• Basements: Installing moisture barriers to prevent groundwater from seeping into basement walls and floors.
• Bathrooms: Using moisture barriers behind tiles to protect walls from water damage.
• Exterior walls: Applying moisture barriers to prevent rainwater from penetrating the building envelope.

Related Terms

• Vapor Barrier: A material that prevents moisture vapor from passing through walls, floors, and ceilings.
• Waterproofing Membrane: A layer applied to surfaces to make them impermeable to water.
• Damp Proofing: Techniques and materials used to resist moisture penetration in buildings.

Notes

• Moisture barriers can be made from various materials, including plastic sheeting, rubberized asphalt, and specialized coatings.
• Proper installation is crucial to ensure the effectiveness of the moisture barrier.
• Regular inspection and maintenance help identify and address any potential issues with moisture infiltration.