Green Buildings Exterior Rigid Insulation Detail Hardie Siding Furring

Siding and the water resistive barrier as a best practice.

Green buildings exterior rigid insulation detail hardie siding furring.

Individual buildings all exterior cladding products including hard siding brick stone stucco and vinyl. 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. 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. Insulated siding installed over furring strips alone would not be considered home insulation.

James hardie recommends the use of building paper type weather resistive barriers with all siding products. In order to increase the insulation values i want to first add a layer of the rigid foam board. I install 1x furring strips vertically over the foam to support fiber cement lap siding. 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.

I have completed several projects that use foil faced polyiso as the exterior rigid insulation board. Increased use of continuous insulation such as rigid foam wall sheathing with greater thickness i e. 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. And other non nailable substrates e g.

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. Exterior rigid insulation 1x3 wood furring strips. Cladding attachment over thick exterior rigid.

Insulation background current building code does provide prescriptive means to. James hardie recommends that you consult with your design professional if you have questions regarding exterior wall drainage on your single family project. James hardie will assume no responsibility. 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.

How to install rigid foam. 3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5.