Proper Flashing At The Bottom Of Hardie Siding

Proper installation of flashing behind siding common mistakes involving step flashing.

Proper flashing at the bottom of hardie siding.

James hardie recommends the use of caulks and sealants that remain permanently flexible. Hardieplank siding with colorplus technology. How to install step flashing under siding. Installation of a continuous sheet of metal flashing from the top of the roof to the bottom of the roof in lieu of step flashing is not a correct method of installation in many instances.

James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. Water resistive barrier install a starter strip hardieplank lap siding requires a starter strip beneath the first course to set it on the proper angle and to create a proper drip edge at the bottom of the siding. Gap flashing do not caulk figure 5 maintain a 1 4 in. Keep water out of your home and running down the roof where it belongs with appropriate use of step flashing.

Maintain a minimum 1 in. Run the l shaped flashing up under the bottom row of siding so that it tucks under the final bottom row and on top of the wall and on top of the last row of bricks before you cap it with the. Joint flashing install starter strip over the weather barrier and even with the bottom of the sheathing. Clearance between the bottom of james hardie products and horizontal flashing.

Step flashing is used where a roof meets a. Some types of roofing materials like concrete tile incorporate a. 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. Slip in the flashing.

Horizontal clearance between james hardie trim products and decks paths steps and driveways. Cover with cap flashing. 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. When the full length of the siding s top edge has been flashed continue installing the t1 11 siding with the bottom edge resting on top of the installed z flashing.

Nail it to the sidewall or glue it if nailing isn t possible. Do not caulk gap. When james hardie siding products butt into wood based materials a 1 8 gap will allow for expansion and contraction of the wood based product. 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.

Cut the z flashing as needed using metal snips or a hacksaw. Between the roofing and the bottom edge of the trim.