Green Buildings Exterior Rigid Insulation Detail Hardie Siding Furring

How to install rigid foam.

Green buildings exterior rigid insulation detail hardie siding furring. 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. Individual buildings all exterior cladding products including hard siding brick stone stucco and vinyl. Some building codes exempt the use of weather resistive barriers over water repellent panel sheathing or exterior panels classified as weather resistive barriers.

I do not use the foam as the drainage plane however. 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. Siding and the water resistive barrier as a best practice. Insulation background current building code does provide prescriptive means to.

3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5. In order to increase the insulation values i want to first add a layer of the rigid foam board. Cladding attachment over thick exterior rigid. 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.

Insulated siding installed over furring strips alone would not be considered home insulation. And other non nailable substrates e g. Exterior rigid insulation 1x3 wood furring strips. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g.

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. 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. 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 recommends the use of building paper type weather resistive barriers with all siding products. I install 1x furring strips vertically over the foam to support fiber cement lap siding.