Insulation Under Hardie Siding

Would it be better insulation if i remove the celotex and use a 1 foam board instead.

Insulation under hardie siding.

When it comes to siding insulation is important. And other non nailable substrates e g. My research seems to indicate that the foam board product is waterproof. How to install rigid foam under siding.

I ve become a big fan of utilizing outsulation on all my houses over the last 2 3 years. Behind the 3 8 strapping is the tyvek creating an air cavity and drainage plane directly behind the hardie which prevents any moisture that penetrates the hardie and it will from deteriorating any of the other building elements. The insulative capabilities of our three siding materials are as follows. February 13 2013 exteriors insulation air sealing siding.

Many houses built today have a double wall type of insulation with fiberglass batts fastened between the studs on the inside and rigid foam board over. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g. 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. Over the span of a year a good siding material can save you thousands of dollars in energy costs.

Exterior rigid foam w modern hardie plank siding details. The building codes are all headed the way of requiring exterior rigid foam the 2012 iecc will require 1 2 foam to boost overall.