How To Add Back Flashing To Hardie Plank Siding

I read your info. Flashing behind butt joints is an effective low maintenance way to comply with building code and help protect against water intrusion. Caulking joints are unnecessary but flashing behind the joints is required.

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2 points 2 years ago.

How to add back flashing to hardie plank siding.

You will have to pull the nails on the bottom of the siding pieces at each joint. Hardie plank siding has a nail line across the top of the board that is 1 down from the top and nails are supposed to fall between and 1 from the top of the board to give the best hold. About installing flashing on already installed siding. How do i flash the siding butt joints.

Then slip a 4in wide by as long as needed 1in longer than width of siding piece of aluminum coil stock behind the joint. It was painted by a contractor who caulked the joints before painting. No matter how you decide to install hardie siding around your windows and doors make sure that your openings are flashed correctly not just according to james hardie s installation instructions but to your local building code. James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2.

Learn how to pin back corners with hardieplank lap siding to tackle bows in the wall or siding that is not laying down the wall with this instructional video. Cut a piece of 6 inch wide steel coil trim about 1 inch longer than the width of a siding board and place it behind the joint. Any lower and you might see a few nail heads poking through the bottom of the next board any higher and your siding is likely to be loose and. My neighbor s house has hardie plank siding.

About 6 12 months later the butt joints looked awful. During the course of any siding installation it will be necessary to install two pieces of siding against each other in a course. Hardieplank siding with colorplus technology. This is a butt joint and it.

I feel caulking will help a lot and enhance the appearance of the house. 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. James hardie recommends 6 inch wide flashing that overlaps the course below by 1 inch. Hardie board installation will require joints between planks.

Join factory edges and place the cut edges against the corner trim boards.

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