Green Buildings Exterior Rigid Insulation Detail Hardie Siding Furring

I install 1x furring strips vertically over the foam to support fiber cement lap siding.

Green buildings exterior rigid insulation detail hardie siding furring.

I have completed several projects that use foil faced polyiso as the exterior rigid insulation board. And other non nailable substrates e g. Up to 4 in thickness is an effective means of meeting or exceeding modern energy code requirements or green building rating requirements such as leed energy star epa and the icc 700 national green building standard. In order to increase the insulation values i want to first add a layer of the rigid foam board.

James hardie recommends the use of building paper type weather resistive barriers with all siding products. Some building codes exempt the use of weather resistive barriers over water repellent panel sheathing or exterior panels classified as weather resistive barriers. 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 do not use the foam as the drainage plane however.

3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5. The furring strips are attached to the studs with 4 screws at 6 to 8 o c. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g. Individual buildings all exterior cladding products including hard siding brick stone stucco and vinyl.

James hardie will assume no responsibility. 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. When insulated siding is installed over furring strips the space between the furring strips must be filled in with rigid insulation or another appropriate building material. Cladding attachment over thick exterior rigid.

How to install rigid foam. 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. Insulated siding installed over furring strips alone would not be considered home insulation. Exterior rigid insulation 1x3 wood furring strips.

James hardie recommends that you consult with your design professional if you have questions regarding exterior wall drainage on your single family project. Siding and the water resistive barrier as a best practice.