How Do You Flash Hardie Siding

Joint flashing butt joint horizontal lap treatment june 2014 james hardie does not recommend caulking butt joints or the horizontal overlaps joint flashing 6 in.

How do you flash hardie siding. James hardie recommends 6 inch wide flashing that overlaps the course below by 1 inch. Flashing behind butt joints is an effective low maintenance way to comply with building code and help protect against water intrusion. 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. Hardie siding requires a minimum 2 gap from all hard surfaces like decks or rooflines and at least 8 from any soft surfaces like grass dirt or gravel.

This video will outline the basics of installing james hardie s fiber cement products. Do not caulk extend shingles at least 1 in. Hardieplank siding with colorplus technology. How do i flash the siding butt joints.

Learn how to install hardiepanel vertical siding products. If the sidewall is stucco or solid wood like ours and you can t open it to get flashing behind it continue the step flashing to the peak of the roof then cover the step flashing with cap flashing. In certain instances flashing may need to be installed on the exterior of siding. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.

During my time working for james hardie i very rarely got calls from homeowners that wanted to submit a warranty claim for their hardie siding. Problems with hardie siding. Hardie siding problems a k a. If the shingle already has flashing on it the kickout flashing has to slip beneath it and you ll have to loosen or remove siding to do this.

James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. However in most instances step flashing should be installed behind siding. Do not caulk clearance and flashing requirements hardiepanel vertical siding hs1237 p2 3 09 19 figure 10 sheltered areas figure 11 mortar masonry min. Out from the fascia when gutters are present as required by irc code min 4 in.