Brick Masonry Techniques Part IV

New Home Construction

FULL HEAD JOINTS | TOOLING MORTAR JOINTS

• 8-64 times more water passes through speed or clip joint than full head joint in testing
• Jointing style affects how much water penetrates the wall
• Tooling brings lines in mortar to the surface to seal the joints against water penetration

SUPPORT OF BRICKWORK AT WALL BASE

• ⅔ thickness of brick needs to be on brick ledge
• ⅓ maximum allowed over brick ledge

WINDOW SILL SLOPE

• Fifteen degrees or ¾ inch
• Slope can eliminate need for split under window
• Allows water to run off away from wall

SUPPORT OF BRICK OVER GARAGE DOOR OPENINGS

• Flash angle iron
• Place compressible material or piece of insulation at end of angle iron to allow for expansion
• Expansion of steel is about twice that of clay
• Durawall in one of the first three courses above angle iron
• Overlap wire by at least one foot

CHIMNEY CHASE

• Faulty chimney can lean toward house causing leakage through mortar joints, not flashing
• Modular brick weigh 40 pounds per square foot | Queen brick weigh 30 pounds per square foot
• The weight of a full brick chimney is equivalent to approximately one Ford F250 truck (3 tons)
• Triple rafters and triple headers are needed for chimney chase
• Chimney should be at least two feet above and ten feet over from shingles
• At least three feet above shingles