Rain Screen Behind Siding

Installed behind a rain screen plastic housewraps can work.

Rain screen behind siding. James hardie recommends that you consult with your design professional if you have questions regarding exterior wall drainage on your single family project. A simple effective solution for rainscreen ventilation behind wood hardboard fiber cement siding. Courtesy cosella dörken the wall is perhaps the most misunderstood and poorly devised assembly in the modern. Ideally the rainscreen prevents the wall air water barrier.

Rainscreen between flat to wall siding and the water resistive barrier as a best practice. Venting behind your siding is just as necessary and valuable as venting your attic. A simple effective solution for rainscreen ventilation behind wood hardboard fiber cement siding. 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.

Air moves behind siding in a rainscreen wall entering under the skirt board and exiting above top trim piece. Off the wall surface. Trapped moisture from driving rain or condensation can cause major problems. The dimpled surface promotes drainage and airflow at both sheathing and siding.

Trapped moisture from driving rain or condensation can cause major problems. Build a rain screen wall sidebar facing page. Venting behind your siding is just as necessary and valuable as venting your attic. The devil is in the details in this case the air intake and flow behind the skirt board.

Delta dry is an hdpe roll material at the core of cosella dörken s delta rainscreen system. Individual buildings all exterior cladding products including hard siding. We re using benjamin obdyke home slicker a plastic mesh matrix that spaces siding about 1 4 in. I prefer 15 tar paper because of its century old track record.

I did this at the top and bottom of the rainscreen mat using flaps of fiberglass screen. Compatible bug screen and flexible sealing tape are also available. The rainscreen is the cladding or siding itself but the term rainscreen implies a system of building. The key is to isolate the housewrap or tar paper from the siding rain screen walls have an airspace between the siding and the building paper or house wrap.

When planning your vents consider wrapping mesh or screen over the cut end of the rainscreen mat to deter insects from passing into the airspace. A rain screen design will improve the longevity of any siding and finish but it is critical when installing wood siding over foam sheathing. The air space behind the shingles allow moisture that soaks in the front of the shingles to dry to the backside as well as the front. 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.