Green Buildings Exterior Rigid Insulation Detail Hardi Siding Furning

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.

Green buildings exterior rigid insulation detail hardi siding furning.

3 water resistive barrier wrb as defined by building code and a. Install over a water resistant barrier. And other non nailable substrates e g. Insulation background current building code does provide prescriptive means to.

Cladding attachment over thick exterior rigid. Your article is vey timely for me. 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. In order to increase the insulation values i want to first add a layer of the rigid foam board.

Exterior rigid insulation 1x3 wood furring strips. 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. Would it be better insulation if i remove the celotex and use a 1 foam board instead. The building codes are all headed the way of requiring exterior rigid foam the 2012 iecc will require 1 2 foam to boost overall efficiency so i m really not too far ahead of my time with.

If that sounds more or less straightforward the details are not. Some building codes exempt the use of weather resistive barriers over water repellent panel sheathing or exterior panels classified as weather resistive barriers. Install rigid foam over or in place of plywood osb or other wall sheathing. I ve had trouble finding any details on fastening siding to furring strips on a wall with exterior rigid foam insulation.

James hardie will assume no responsibility. 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. I appreciate you providing more info on this overlooked detail. James hardie recommends the use of building paper type weather resistive barriers with all siding products.

This is why i like this site. Section 1 exterior wall drainage requirements 1 water resistive barrier and drainage requirements as defined by building code. Install continuous rigid foam insulation or insulated siding to help reduce thermal bridging through wood or metal framed exterior walls. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g.