Continuous Insulation Hardie Siding

February 13 2013 exteriors insulation air sealing siding.

Continuous insulation hardie siding.

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. Continuous rigid insulation is a construction solution that provides a thermally efficient building enclosure. Hardie siding problems a k a. Problems with hardie siding.

Fiber cement problems are rare but do happen from time to time. Exterior rigid foam w modern hardie plank siding details. In order to increase the insulation values i want to first add a layer of the rigid foam board. Fiber cement is a siding material that was first introduced in the 1980 s as a replacement for asbestos cement wood aluminum and vinyl siding products.

1 inch and 2 inch thicknesses are common. This bulletin summarizes the application of hardie siding by two methods that align with the goal to improve the building s thermal envelope. The boards are available in several thicknesses and r values. James hardie offers either 30 or 50 year warranties on all of their fiber cement siding options.

The building codes are all headed the way of requiring exterior rigid foam the 2012 iecc will require 1 2 foam to boost overall. Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g. James hardie fiber cement siding is a hardened concoction of cement sand and synthetic polymers. Alternating exposures with hardieplank.

Applying james hardie siding over continuous insulation and non nailable substrates. Gypsum sheathing with combined thickness of 1 inch or less. I ve become a big fan of utilizing outsulation on all my houses over the last 2 3 years.