Installing wood siding in some type of a rainscreen design has become the design and construction standard – not the exception. Thank goodness. Gone are the days of black mold rotting the siding right off your home. There are some simple and effective methods for creating a high-performance wood rainscreen system.
Garapa wood rainscreen system design, horizontal and vertical installation in Sun Valley, Idaho
Wood siding is spaced off the building envelope to create a wall cavity behind the siding. This is often called a rainscreen gap. A rainscreen is not a single thing – it’s a system. It’s a combination of a tight building envelope, a rainscreen gap to manage moisture, and wood siding. How you design and install the rainscreen is the key to success.
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Water is the biggest enemy of wood, especially exterior wood. As the old saying goes, “Proper prior planning prevents poor performance”. Selecting a high-performance house wrap before you start the installation is the first critical decision for any wood rainscreen system design. Installing it properly is the next critical step.
When creating a rainscreen, some people think – erroneously – that the siding will keep out all the water. This is not true, especially with an open joint rainscreen system. The function of the siding in a rainscreen is to keep the bulk water out. If water does enter the rainscreen cavity, it needs a method to allow the water or vapor to escape, and to dry out quickly. A weather resistive barrier is more important now than ever before.
There are four common types of wood rainscreen systems for residential design and construction with plywood or OSB for exterior sheathing. The first two (drainable house wrap and the mesh style rainscreen) work great for shingles, shakes and clapboard. The next two methods (furring strip and advanced rainscreen clips) work best for wood siding boards.
This rainscreen method works great for shingles and clapboards. This method saves time and labor because
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This rainscreen method also works well for shingles and clapboards. The house wrap is installed first, then the mesh rainscreen spacer is placed over it to create the rainscreen gap. Next, the wood siding is installed.
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The furring strip rainscreen method works well for clapboards, siding boards and T&G (tongue and groove) siding. The house wrap (weather resistive barrier) is installed first, then the furring strips are installed to create the rainscreen gap. Then the siding is installed.
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This rainscreen method is considered the most effective system for residential homes (and commercial structures) that use plywood or OSB for exterior sheathing. It is ideal for nearly all wood siding species. The boards are milled to the correct profile for trouble-free, quick installation. As this is an “open joint” rainscreen system, selecting a high-quality WRB is crucial for long term performance.
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If you love the look and feel of real wood siding boards, we have a wide range of gorgeous siding options to consider. They can be milled to T&G (Tongue and Groove) or the Climate-Shield rainscreen siding profile depending on your design and installation preference.
Arbor Wood American Ash cladding
Arbor Wood Thermowood thermally modified cladding is available in American White Ash, Poplar and Southern Yellow pine wood species, several cladding sizes, profiles and many different architectural finishes.
Mataverde Machiche hardwood cladding in Climate-Shield rainscreen design
Mataverde high density hardwood cladding species like Jatoba, Machiche, Garapa and Ipe are long lasting and can enhance your design beautifully.
Mataverde SaferWood ignition resistant real wood cladding
If you are in a high fire zone, consider Mataverde SaferWood ignition resistant real wood siding for your project.
RELATED: DOWNLOAD THE ULTIMATE GUIDE TO BUILDING GREEN WITH WOOD RAINSCREEN SIDING