Rain Screen Behind Hardiplan Lapp Siding

It kind of seems that they should spec furring strips for both.

Rain screen behind hardiplan lapp siding.

Sidings like hardie board lp smartside and natural cedar benefit from a rainscreen air gap between the siding and the housewrap. Rainscreen behind hardie panel b amp b hardy plank came out with a new furring strip. The devil is in the details in this case the air intake and flow behind the skirt board. My question is why is james hardy requiring these furring strips with their new panel and not their normal lap siding.

James hardie s installation instructions do not specify a rainscreen for hardieplank on any type of construction. We re using benjamin obdyke home slicker a plastic mesh matrix that spaces siding about 1 4 in. 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. Detailing a rain screen wall furring strips space the clapboards away from the wall creating a vent space that helps to dry the back of the siding.

Rainscreen between flat to wall siding and the water resistive barrier as a best practice. Off the wall surface. Corrugated lath strip crea. James hardie recommends that you consult with your design professional if you have questions regarding.

In most jurisdictions including alberta a rainscreen system is not required for james hardie lap siding. To rainscreen or not to rainscreen if you are worried about the hardi product breaking which can happen you might see if you can find lp smartside siding in your area. It is a much tougher product and easy to install. For single family construction james hardie recommends installing a 90 efficient drainage plane or a 3 8 inch air gap i e.

Mti s corrugated lath strip creates a capillary break that prevents entrapped water and promotes airflow to dry out the siding and substrate. Tips for durable fiber cement exteriors. An air gap between the siding and sheathing.