Rain Screen Siding Detail

Typical rainscreen wall and window details per.

Rain screen siding detail.

A rain screen design will improve the longevity of any siding and finish but it is critical when installing wood siding over foam sheathing. In my last post i showed some video footage of this rainscreen installation but i ve gotten a few requests for some detail shots. The gap is very small typically around 1 16 and it is completely invisible when looking at the finished rainscreen system after installation. If you ve never seen this method of siding installation there are tons of resources on the web for details.

The foam is taped and acts as an air barrier and drainage plane. Rainscreen between flat to wall siding and the water resistive barrier as a best practice. Install cor a vent above the window. For single family construction james hardie recommends installing a 90 efficient drainage plane or a 3 8 inch air gap i e.

James hardie recommends that you consult with your design professional if you have questions regarding. The details shown here were developed for walls sheathed with 1 1 2 in thick rigid foam insulation applied directly to the studs. Our system includes top and bottom vents screened. 8 nmi base of wa l nts w ar nty p rovi dea c pt 7 0 detail march 2 07 tw olayers f building pa er drywa l v apou rb ie sill gasket th erm al br k slab on grade pt s tr api ngo h 3 4 b el ow cn r t.

Apply joint seam filler to the top of the back leg of the head flashing. This is far superior to wood furring strips plastic batten or those expensive mesh rain screen products that can cause problems with wavy siding if nailed too tight. Historical rainscreen siding systems. Tool joint seam filler into place.

Wood sidings installed directly over foam sheathings are more prone to problems such as cupping cracking and paint failures than wood siding installed over wood sheathings. If you re building a house with rigid foam sheathing and a rain screen gap behind the siding you ll need to incorporate some new practices. A rainscreen is an exterior wall detail where the siding wall cladding stands off from the moisture resistant surface of an air water barrier applied to the sheathing to create a capillary break and to allow drainage and evaporation. Intercept modular metal panel systems interrupt conventional thought on rainscreen wall systems to inspire spectacular visual results.

In modern rainscreen siding systems attached with clips there is an additional air gap between the actual siding boards themselves. Fold wrb flap back down and tape the slit to prevent water intrusion. Attach remaining rain screen furring above head flashing. Ideally the rainscreen prevents the wall air water barrier.