Insulation Under Hardie Siding

Of the three materials reviewed james hardie has the worst insulation.

Insulation under hardie siding.

The insulative capabilities of our three siding materials are as follows. James hardie is the world leader in fiber cement siding and backerboard. Addition to my house. In the end the decision to install house wrap under your siding is a personal one that you should make after discussing it with your contractor.

We ve been providing a better way to build for over 100 years. 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. Moisture can get trapped between the siding and the foam leading to paint failure and causing clapboards to cup and curl. Exterior rigid foam w modern hardie plank siding details.

Lp siding with fern strips over insulation. I m an architect in wisconsin climate zone 6b and am planning to build a 300 s f. Over the span of a year a good siding material can save you thousands of dollars in energy costs. I ve become a big fan of utilizing outsulation on all my houses over the last 2 3 years.

Well call me half hazard. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g. The building codes are all headed the way of requiring exterior rigid foam the 2012 iecc will require 1 2 foam to boost overall. Last year i installed lp lap smart trim shingles and the 4x8 sheets of lp with batts all over 3 of continous xps foam using fern strips.

I did use larger diameter ring shanked nails than specified to fasten the. And other non nailable substrates e g. When it comes to siding insulation is important. How to install rigid foam under siding.

Of course i did this all knowing my warranty would be void. 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. But if you use wood clapboard siding foam sheathing can cause trouble. However if you re interested a residing project offers the perfect time to examine your home s weather barrier and exterior insulation and improve it if need be.