Designing for Water Resistance

Water resistance of a masonry wall depends on four key factors:

• Design, including detailing.
• Materials.
• Construction.
• Maintenance.

Water is abundant in many forms. Rain and snow wet masonry walls. Water vapor is present from many sources. Water penetration must be controlled because water contacting building materials cannot be prevented. When water passes through a brick wall it usually does so through the minute spaces between the brick and mortar joints. It is highly unlikely for large amounts of water to pass directly through the bricks or joints.

Modern exterior wall construction is characterized by minimal overhang at the top which permits more water to come in contact with brick for longer periods of time. When designing with brick, it is important to focus on limiting the amount of water penetration and controlling any moisture that enters the wall system. The wall will remain dry if moisture penetration can be managed.

Your Kuhlman sales representative, working in conjunction with specialists from the Brick Institute of America, can give you suggestions for evaluating the following considerations when designing masonry walls for water resistance:

• Sources of moisture.
• Selection of wall type.
• Flashing and weepholes.

Look to Kuhlman Corporation for the best in masonry quality, value and service.