Masonry Magazine October 2009 Page. 25
The cost of metal flashings is subject to market volatility.
Structure by which moisture and air may move freely, though some may do a better job than others.
The industry standard 3/8-inch round, clear plastic weep tube runs itself about four inches back into the cavity wall. These, most often, immediately become new high-end real estate for insects, and a trapping point for dirt and debris. They also are manufactured with a wick and screen glued into either end, which, more or less, clogs the weep before it ever gets onto the jobsite. Inexpensive and available in nearly every masonry showroom to grab by the handful or box, their accessibility and low-cost keeps them as the most widely used weep device on the market. But, are they effective? The larger rectangular version - usually around 1.5 inches in height - does a much better job holding the opening of the head joint, but is still susceptible to insects and debris.
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