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Moisture Management Education

Education

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Not all drainable housewraps are created equal. Housewrap performance criteria per AC38 “Drainage Efficiency” Test is based on TWO HOURS per water event. There are numerous moisture events over the life of the wall. For each occurrence, a percentage of that moisture will get behind your siding. If the water isn’tmgiven an escape route, it will find the path of least resistance - either absorbed into the siding materials or through the fastener locations and into your sheathing. Are you...

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Water gets into buildings. It’s an indisputable reality. The effects of inward driven moisture can wreak havoc on the structural integrity, durability and longevity of any building. The aftermath leaves homeowners and property managers struggling to fix problems including rot, mold and mildew. For architects and builders, failing to identify these potential risks and specify solutions to mitigate them can become a significant issue in renovation, as well as in litigation. The marketplace is...

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Not all drainable housewraps are created equal. Housewrap performance criteria per AC38 “Drainage Efficiency” Test is based on TWO HOURS per water event. There are numerous moisture events over the life of the wall. For each occurrence, a percentage of that moisture will get behind your siding. If the water isn’t given an escape route, it will find the path of least resistance - either absorbed into the siding materials or through the fastener locations and into your sheathing. Are you...

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Did you know that major siding manufacturers, such as James Hardie and Boral, have recently issued drainage requirements behind their products? Drainable housewraps with a drainage efficiency of at least 90% when tested according to ASTM E2273 are now recommended or required behind certain exterior sidings. Drainage efficiency isn’t the whole story though. We suggest that you question how long it takes to reach the 90% – how fast does your housewrap remove the moisture? The longer...

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Open joint rainscreen cladding is a growing trend in exterior facades. The design concept relies on the performance benefits of a rainscreen, which is a gap behind cladding that facilitates drainage and drying. The open joint allows some incidental water to enter the rainscreen gap, but also promotes enhanced airflow to increase the drying rate. This creates a low-risk wall assembly to the potential damaging effects of moisture. The downside of the open joint design is that areas of the...

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Consider all the humidity in the air. Think about all the rainy days. For each occurrence, a percentage of that moisture will get behind your siding. If the water isn’t given an escape route, it will find the path of least resistance - either absorbed into the siding materials or through the fastener locations and into your sheathing. Not all drainable housewraps actually drain effectively. Housewrap performance criteria per AC38 “Drainage Efficiency” Test is based on TWO HOURS per...

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​Moisture is the number one cause of exterior wall damage. Drainage is widely accepted as one of the most effective measures for reducing moisture damage due to rain penetration. Drainage is a critical component in allowing the housewrap to do its job – particularly in keeping walls dry. According to a study by John Straube and Jonathan Smegal of Building Science Corporation, a 1mm drainage gap “will drain water at a rate considerably greater than rainwater is expected to penetrate behind...

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​A rainscreen system, such as our Slicker family, was designed for regions of the country prone to wind-driven rain, excessive amounts of rainfall, or high temperature and humidity. Wind-driven rain from the outside and moisture vapor from the home’s interior, often remain trapped in the sidewall assembly. Left alone, this moisture can promote the growth of mold and undermine the structural integrity of the wall. For wet and/or humid climates, coastal areas and hilltop exposures...

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Yes, you can use Cedar Breather for side wall applications under your siding material. Similar to our Slicker Rainscreen, Cedar Breather maintains a 1/4” gap to promote airflow and ventilation. The difference between Slicker and Cedar Breather resides in the color and manufacturing process. Slicker is yellow and contains vertical channels designed to promote drainage. Cedar Breather is black and has a conical shape pattern to promote circulation under cedar roofing materials. Depending...

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Slicker products are faster and easier to install, cutting labor costs. Slicker products provide a continuous vented airspace over the entire surface area of the wall, providing greater drainage and more effective drying than wood strapping which only vents approximately 85% of the wall. (1x3 strapping installed 16 inches on center leaves 15% of the wall unventilated.) Unlike wood furring that is subject to saturation and decomposition in a relatively short period of time, Slicker...

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