Green Buildings Exterior Rigid Insulation Detail Hardie Siding Furring

How to install rigid foam.

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. 3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5. I install 1x furring strips vertically over the foam to support fiber cement lap siding. Siding and the water resistive barrier as a best practice.

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. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g. Increased use of continuous insulation such as rigid foam wall sheathing with greater thickness i e. 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.

James hardie recommends that you consult with your design professional if you have questions regarding exterior wall drainage on your single family project. 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. 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. I do not use the foam as the drainage plane however.

James hardie recommends the use of building paper type weather resistive barriers with all siding products. Cladding attachment over thick exterior rigid. 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. Insulation background current building code does provide prescriptive means to.

James hardie will assume no responsibility. Individual buildings all exterior cladding products including hard siding brick stone stucco and vinyl. Insulated siding installed over furring strips alone would not be considered home insulation. The furring strips are attached to the studs with 4 screws at 6 to 8 o c.

And other non nailable substrates e g. 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.