Green Buildings Exterior Rigid Insulation Detail Hardie Siding Furring

In order to increase the insulation values i want to first add a layer of the rigid foam board.

Green buildings exterior rigid insulation detail hardie siding furring.

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 will assume no responsibility. Exterior rigid insulation 1x3 wood furring strips. 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.

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

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. Siding and the water resistive barrier as a best practice. Insulation background current building code does provide prescriptive means to. 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.

Increased use of continuous insulation such as rigid foam wall sheathing with greater thickness i e. How to install rigid foam. 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. Individual buildings all exterior cladding products including hard siding brick stone stucco and vinyl.

The furring strips are attached to the studs with 4 screws at 6 to 8 o c. I install 1x furring strips vertically over the foam to support fiber cement lap siding. 3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5. I have completed several projects that use foil faced polyiso as the exterior rigid insulation board.

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.