Green Buildings Exterior Rigid Insulation Detail Hardi Siding Furning

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Green buildings exterior rigid insulation detail hardi siding furning.

February 13 2013 exteriors insulation air sealing siding i ve become a big fan of utilizing outsulation on all my houses over the last 2 3 years. This is why i like this site. Gypsum sheathing with combined thickness of 1 inch or less method 2 james hardie siding installed to furring strips that are attached through the c i. Install rigid foam over or in place of plywood osb or other wall sheathing.

Some building codes exempt the use of weather resistive barriers over water repellent panel sheathing or exterior panels classified as weather resistive barriers. Insulation background current building code does provide prescriptive means to. And other non nailable substrates e g. Hardie plank recommends a maximum of 1 of foam board celotex type material under their lap siding so the 1 2 foam and 1 2 celotex would be fine.

3 water resistive barrier wrb as defined by building code and a. In order to increase the insulation values i want to first add a layer of the rigid foam board. Install over a water resistant barrier. Install continuous rigid foam insulation or insulated siding to help reduce thermal bridging through wood or metal framed exterior walls.

Exterior rigid insulation 1x3 wood furring strips. 3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5. Cladding attachment over thick exterior rigid. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g.

I appreciate you providing more info on this overlooked detail. Section 1 exterior wall drainage requirements 1 water resistive barrier and drainage requirements as defined by building code. 2 water resistive barrier as defined by local building code that is manufactured to meet minimum 90 drainage efficiency when tested in accordance with astm e2273 or other recognized national standards. James hardie recommends the use of building paper type weather resistive barriers with all siding products.

Plans call for vertical wood siding over a layer of rigid foam insulation. The contractor has limited experience working with rigid exterior insulation remsberg writes and has concerns that installing siding directly over the foam may not be a great idea. Would it be better insulation if i remove the celotex and use a 1 foam board instead. If that sounds more or less straightforward the details are not.